CN113338335B - Waterproof construction method for external corner of bottom plate of urban underground comprehensive pipe gallery - Google Patents
Waterproof construction method for external corner of bottom plate of urban underground comprehensive pipe gallery Download PDFInfo
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- CN113338335B CN113338335B CN202110695987.3A CN202110695987A CN113338335B CN 113338335 B CN113338335 B CN 113338335B CN 202110695987 A CN202110695987 A CN 202110695987A CN 113338335 B CN113338335 B CN 113338335B
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- 238000010276 construction Methods 0.000 title claims abstract description 74
- 239000010410 layer Substances 0.000 claims abstract description 230
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 62
- 239000011241 protective layer Substances 0.000 claims abstract description 61
- 238000002955 isolation Methods 0.000 claims abstract description 52
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 51
- 229920002545 silicone oil Polymers 0.000 claims abstract description 39
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 229920001296 polysiloxane Polymers 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 13
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 11
- 239000004744 fabric Substances 0.000 description 9
- 239000004568 cement Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
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Abstract
The invention discloses a waterproof construction method for an external corner of a bottom plate of an urban underground comprehensive pipe gallery, which comprises the following steps of smearing a bottom plate waterproof structure; step two, laying a silicone oil paper layer; step three, coating a mortar isolation layer; pouring a bottom plate protective layer and carrying out main body construction; fifthly, removing part of the mortar isolation layer and leveling the chamfer; step six, smearing an outer waterproof layer and a waterproof reinforcing layer; and seventhly, pouring a waterproof protective layer on the outer side of the bottom plate and adhering a side wall protective layer. According to the invention, the silicone oil paper layer and the mortar isolation layer are laid between the bottom plate waterproof structure and the bottom plate protection layer, and the combined structure of the silicone oil paper layer and the mortar isolation layer is utilized, so that the bottom plate waterproof layer at the lap joint part of the external corners of the bottom plate is protected from being damaged in the main body construction process after the bottom waterproof construction of the underground comprehensive pipe gallery base layer is completed, and the waterproof quality of the external corners of the bottom plate is ensured.
Description
Technical Field
The invention belongs to the technical field of urban underground comprehensive pipe gallery construction, and particularly relates to a waterproof construction method for an external corner of a bottom plate of an urban underground comprehensive pipe gallery.
Background
Along with the continuous acceleration of the urbanization progress of China, in the whole construction process of a city, the construction of the urban underground comprehensive pipe gallery gradually becomes the current main development trend, in the construction process of the urban underground comprehensive pipe gallery, the application of a waterproof construction technology is very critical, the foundation waterproof construction work is well done, and the foundation waterproof construction work is an important foundation for the construction work of the underground comprehensive pipe gallery. And the waterproof overlap joint of piping lane bottom plate external corner is the waterproof weak position of piping lane again, has important influence to the waterproof and subsequent performance of piping lane, in order to effectively guarantee the waterproof construction quality of piping lane, can combine traditional underground structure waterproof construction method, carries out waterproof construction to city underground utility tunnel bottom plate external corner. The traditional external corner construction structure of the bottom plate needs to build a protective wall, so that the construction cost and the construction period are correspondingly increased; and the water-proof structure without building the protection wall usually causes damage in the main body construction process of the urban underground comprehensive pipe gallery. Therefore, a waterproof construction method for the external corner of the bottom plate is provided to solve the above problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a waterproof construction method for the external corner of the bottom plate of the urban underground comprehensive pipe gallery, aiming at the defects in the prior art, wherein a silicone oil paper layer and a mortar isolation layer are laid between the waterproof structure of the bottom plate and the bottom plate protection layer, and the waterproof layer of the bottom plate at the lap joint part of the external corner of the bottom plate is protected during the construction process of a main body structure after the waterproof construction of the bottom of the underground comprehensive pipe gallery base layer is finished by utilizing the combined structure of the silicone oil paper layer and the mortar isolation layer, so that the waterproof quality of the external corner of the bottom plate is ensured without being damaged during the construction process of the main body structure.
In order to solve the technical problems, the invention adopts the technical scheme that: a waterproof construction method for an external corner of a bottom plate of an urban underground comprehensive pipe gallery is characterized by comprising the following steps: the method comprises the following steps:
step one, smearing a waterproof structure of a bottom plate: smearing a bottom plate waterproof structure on the top of a cushion layer of a main structure of the pipe gallery to be constructed; the width of the bottom plate waterproof structure is larger than that of the main structure of the pipe rack, and the bottom plate waterproof structure is coated from low to high along the longitudinal extension direction of the main structure of the pipe rack;
step two, paving a silicone oil paper layer: paving a silicone oil paper layer on the top of the paved waterproof structure of the bottom plate; the silicone oil paper layer is paved from low to high along the longitudinal extension direction of the bottom plate waterproof structure; the bottom of the silicone oil paper layer is tightly attached to the top of the waterproof structure of the base plate, and the silicone oil paper layer is arranged on the outer side of the main structure of the pipe gallery;
step three, coating a mortar isolation layer: coating mortar isolation layers on the top of the bottom plate waterproof structure and the top of the silicone oil paper layer; the mortar isolation layer is coated from low to high along the longitudinal extension direction of the bottom plate waterproof structure, and the width of the mortar isolation layer is equal to that of the bottom plate waterproof structure;
step four, pouring a bottom plate protective layer and carrying out main body construction:
step 401, pouring a bottom plate protective layer on the top of the coated mortar isolation layer; the width of the bottom plate protective layer is equal to that of the pipe gallery main body structure, and the bottom plate protective layer is poured from low to high along the longitudinal extension direction of the pipe gallery main body structure;
step 402, after the bottom plate protective layer is finally set, constructing the pipe gallery main body structure on the bottom plate protective layer, wherein the outer side surface of the bottom plate protective layer is flush with the outer side wall of the pipe gallery main body structure;
step five, removing part of the mortar isolation layers and leveling the chamfer:
step 501, tapping the mortar isolation layer positioned on the outer side of the pipe gallery main body structure and dismantling the mortar isolation layer until the outer side surface of the mortar isolation layer is flush with the outer side surface of the bottom plate protection layer;
502, removing the silicone paper layer positioned on the outer side of the pipe gallery main body structure, wherein the exposed top surface of the bottom plate waterproof structure and the outer side surface of the bottom plate protective layer form a transition chamfer area; the transition chamfer area is distributed along the longitudinal extension direction of the bottom plate protective layer, and the longitudinal section of the transition chamfer area is a right-angled triangle;
step 503, floating the transition chamfer area to form a support chamfer structure, wherein the support chamfer structure is arranged along the longitudinal extension direction of the main structure of the pipe gallery; the longitudinal section of the supporting chamfer structure is a right-angled triangle, and the top of the supporting chamfer structure and the top surface of the bottom plate protective layer are arranged in the same horizontal plane;
step six, smearing an outer waterproof layer and a waterproof reinforcing layer: coating an outer waterproof layer on the outer side of the side wall of the pipe gallery main structure, coating a waterproof reinforcing layer on the outer side of the outer waterproof layer after the outer waterproof layer is solidified, wherein the outer waterproof layer covers the outer side wall of the pipe gallery main structure, the supporting chamfer structure and the exposed bottom plate waterproof structure; the outer waterproof layer and the waterproof reinforcing layer are attached to each other and are arranged along the longitudinal extension direction of the main structure of the pipe gallery;
seventhly, pouring a waterproof protective layer on the outer side of the bottom plate and sticking a side wall protective layer:
701, pouring a bottom plate outer side waterproof protective layer on a horizontal section of the waterproof reinforcing layer, wherein the thickness of the bottom plate outer side waterproof protective layer is 30-50 mm, the bottom plate outer side waterproof protective layer is arranged along the longitudinal extension direction of the pipe gallery main body structure, and the outer side surface of the bottom plate outer side waterproof protective layer is flush with the outer side surface of the bottom plate waterproof structure;
step 702, after the waterproof layer on the outer side of the bottom plate is finally set, vertically pasting a side wall waterproof structure on the outer side of the side wall of the pipe gallery main body structure, wherein the bottom surface of the side wall waterproof structure is tightly attached to the top surface of the waterproof layer on the outer side of the bottom plate.
The waterproof construction method for the external corner of the bottom plate of the urban underground comprehensive pipe gallery is characterized by comprising the following steps: in the first step, the bottom plate waterproof structure comprises a bottom plate waterproof base layer horizontally laid on the top of the cushion layer and a bottom plate waterproof layer horizontally arranged on the top of the bottom plate waterproof base layer, and the top of the bottom plate waterproof base layer is attached to the bottom of the bottom plate waterproof layer; the length of bottom plate waterproof basic unit with the length of bottom plate waterproof layer equals, the width of bottom plate waterproof basic unit with the width of bottom plate waterproof layer equals, the bottom plate waterproof basic unit with the width of bottom plate waterproof layer all is greater than the width of piping lane major structure.
The waterproof construction method for the external corner of the bottom plate of the urban underground comprehensive pipe gallery is characterized by comprising the following steps: in the second step, the outer side surface of the silicone oil paper layer is flush with the outer side surface of the bottom plate waterproof structure, and the inner side surface of the silicone oil paper layer is flush with the outer side wall of the pipe gallery main structure; the silicone paper layer is composed of a plurality of silicone papers which are sequentially and continuously paved along the width direction of the bottom plate waterproof structure.
The waterproof construction method for the external corner of the bottom plate of the urban underground comprehensive pipe gallery is characterized by comprising the following steps: in the second step, the width of the silicone oil paper layer is L, and the value range of L is
。
The waterproof construction method for the external corner of the bottom plate of the urban underground comprehensive pipe gallery is characterized by comprising the following steps: in the sixth step, the waterproof reinforcing layer comprises an oblique reinforcing section obliquely laid on the oblique surface of the supporting chamfer structure, a horizontal waterproof reinforcing section horizontally laid on the top of the waterproof layer of the bottom plate, and a vertical waterproof reinforcing section vertically arranged on the outer side of the side wall of the main structure of the pipe gallery; the oblique reinforcing section, the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section are integrally formed; the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section are equal in length, and the end of the horizontal waterproof reinforcing section is flush with the outer side face of the bottom plate waterproof structure.
The waterproof construction method for the external corner of the bottom plate of the urban underground comprehensive pipe gallery is characterized by comprising the following steps: and seventhly, the side wall waterproof structure and the bottom plate waterproof structure are identical in structure, the side wall waterproof structure is tightly attached to the outer side wall of the main structure of the pipe rack, and the side wall waterproof structure is coated from bottom to top along the longitudinal extension direction of the main structure of the pipe rack.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the silicone oil paper layer and the mortar isolation layer are laid between the bottom plate waterproof structure and the bottom plate protection layer, and the combined structure of the silicone oil paper layer and the mortar isolation layer is utilized, so that the bottom plate waterproof layer at the lap joint part of the external corners of the bottom plate is protected from being damaged in the main body construction process after the bottom waterproof construction of the underground comprehensive pipe gallery base layer is completed, and the waterproof quality of the external corners of the bottom plate is ensured.
2. Compared with the traditional waterproof construction of the external corner of the bottom plate, the construction method is simple, does not need to build a protective wall, reduces the engineering cost, accelerates the progress, and is beneficial to shortening the construction period.
3. The construction site is deep foundation pit operation, the protection wall is not built to carry out waterproof construction on the external corner of the bottom plate, the construction speed is high, the construction period is shortened, the exposure time of the foundation pit is effectively reduced, materials such as bricks and the like do not need to be hung and conveyed into the foundation pit, and the construction period progress and the foundation pit safety are effectively improved.
In conclusion, the silicone oil paper layer and the mortar isolation layer are laid between the bottom plate waterproof structure and the bottom plate protective layer, and the combined structure of the silicone oil paper layer and the mortar isolation layer is utilized, so that the bottom plate waterproof layer at the lap joint part of the external corner of the bottom plate is protected from being damaged in the main body construction process after the bottom waterproof construction of the underground comprehensive pipe gallery base layer is completed, and the waterproof quality of the external corner of the bottom plate is ensured.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of the construction states of the waterproof structure of the daubing base plate, the silicone oil paper layer, the mortar isolation layer and the base plate protection layer.
FIG. 2 is a schematic view of the construction state of the mortar isolation layer removed according to the present invention.
FIG. 3 is a schematic view of the construction state of the floating transition chamfer area.
Fig. 4 is a schematic view of the construction state of the present invention in which the outer waterproof layer and the waterproof reinforcing layer are applied.
Fig. 5 is a schematic view of the construction state of pouring the waterproof protective layer on the outer side of the bottom plate and adhering the protective layer of the side wall.
FIG. 6 is a block flow diagram of a method of the present invention.
Description of reference numerals:
1-waterproof base layer of bottom plate; 2-waterproof layer of bottom plate; 3-silicone oil paper layer;
4-a bottom plate protective layer; 5, supporting a chamfering structure; 6-waterproof reinforced layer;
7-waterproof protective layer outside the bottom plate; 8, a mortar isolation layer; 9, a side wall waterproof structure;
10-main structure of pipe gallery; 11-outer waterproof layer.
Detailed Description
As shown in fig. 1 to 6, the present invention includes the steps of:
step one, smearing a waterproof structure of a bottom plate: smearing a bottom plate waterproof structure on the top of a cushion layer of a pipe gallery main body structure 10 to be constructed; the width of the bottom plate waterproof structure is larger than that of the pipe rack main body structure 10, and the bottom plate waterproof structure is coated from low to high along the longitudinal extension direction of the pipe rack main body structure 10;
as shown in fig. 1, step two, spreading a silicone paper layer: paving a silicone oil paper layer 3 on the top of the paved waterproof structure of the bottom plate; the silicone oil paper layer 3 is laid along the longitudinal extension direction of the waterproof structure of the bottom plate from low to high; the bottom of the silicone oil paper layer 3 is tightly attached to the top of the bottom plate waterproof structure, and the silicone oil paper layer 3 is arranged on the outer side of the pipe gallery main structure 10;
as shown in fig. 1, coating a mortar isolation layer: coating mortar isolation layers 8 on the top of the bottom plate waterproof structure and the top of the silicone oil paper layer 3; the mortar isolation layer 8 is coated from low to high along the longitudinal extension direction of the bottom plate waterproof structure, and the width of the mortar isolation layer 8 is equal to that of the bottom plate waterproof structure;
in actual use, the thickness of the mortar isolation layer 8 is 20mm, and the mortar for laying the mortar isolation layer 8 is formed by mixing cement and mortar in a ratio of 1: 2.5.
As shown in fig. 1 and 2, step four, pouring a bottom plate protective layer and performing main body construction:
step 401, pouring a bottom plate protective layer 4 on the top of the coated mortar isolation layer 8; the width of the bottom plate protective layer 4 is equal to that of the pipe gallery main body structure 10, and the bottom plate protective layer 4 is poured from low to high along the longitudinal extension direction of the pipe gallery main body structure 10;
step 402, after the bottom plate protective layer 4 is finally set, constructing the pipe gallery main body structure 10 on the bottom plate protective layer 4, wherein the outer side surface of the bottom plate protective layer 4 is flush with the outer side wall of the pipe gallery main body structure 10;
during practical use, the thickness of the bottom plate protective layer 4 is 50mm, and the bottom plate protective layer 4 is a concrete layer.
Step five, removing part of the mortar isolation layers and leveling the chamfer:
step 501, tapping the mortar isolation layer 8 positioned on the outer side of the pipe gallery main structure 10 and removing the mortar isolation layer until the outer side surface of the mortar isolation layer 8 is flush with the outer side surface of the bottom plate protection layer 4;
502, removing the silicone paper layer 3 positioned on the outer side of the pipe gallery main body structure 10, wherein the exposed top surface of the bottom plate waterproof structure and the outer side surface of the bottom plate protective layer 4 form a transition chamfer area; the transition chamfer area is distributed along the longitudinal extension direction of the bottom plate protective layer 4, and the longitudinal section of the transition chamfer area is a right-angled triangle;
as shown in fig. 3, step 503, floating the transition chamfer area to form a support chamfer structure 5, wherein the support chamfer structure 5 is arranged along the longitudinal extension direction of the pipe gallery main body structure 10; the longitudinal section of the supporting chamfer structure 5 is a right-angled triangle, and the top of the supporting chamfer structure 5 and the top surface of the bottom plate protective layer 4 are arranged in the same horizontal plane;
during the in-service use, support chamfer structure 5 adopts impervious micrite cement mortar to smear the shaping, support chamfer structure 5's width and height equal and be 50 mm.
As shown in fig. 4, step six, coating an outer waterproof layer and a waterproof reinforcing layer: coating an outer waterproof layer 11 on the outer side of the side wall of the pipe gallery main structure 10, coating a waterproof reinforcing layer 6 on the outer side of the outer waterproof layer 11 after the outer waterproof layer 11 is solidified, wherein the outer waterproof layer 11 covers the outer wall of the pipe gallery main structure 10, the supporting chamfer structure 5 and the exposed bottom plate waterproof structure; the outer waterproof layer 11 and the waterproof reinforcing layer 6 are attached to each other, and the outer waterproof layer 11 and the waterproof reinforcing layer 6 are arranged along the longitudinal extension direction of the pipe gallery main body structure 10;
as shown in fig. 5, step seven, pouring the waterproof protective layer on the outer side of the bottom plate and adhering the side wall protective layer:
701, pouring a bottom plate outer waterproof protective layer 7 on a horizontal section of the waterproof reinforcing layer 6, wherein the thickness of the bottom plate outer waterproof protective layer 7 is 30-50 mm, the bottom plate outer waterproof protective layer 7 is arranged along the longitudinal extending direction of the pipe gallery main structure 10, and the outer side surface of the bottom plate outer waterproof protective layer 7 is flush with the outer side surface of the bottom plate waterproof structure;
step 702, after the waterproof layer 7 on the outer side of the bottom plate is finally solidified, vertically adhering a side wall waterproof structure 9 to the outer side of the side wall of the pipe gallery main structure 10, wherein the bottom surface of the side wall waterproof structure 9 is tightly attached to the top surface of the waterproof layer 7 on the outer side of the bottom plate.
In actual use, the pipe gallery main body structure 10, the bottom plate waterproof structure, the mortar isolation layer 8 and the bottom plate protective layer 4 are constructed on the cushion layer; according to the invention, the silicone oil paper layer 3 and the mortar isolation layer 8 are laid between the bottom plate waterproof structure and the bottom plate protection layer 4, and the combined structure of the silicone oil paper layer 3 and the mortar isolation layer 8 is utilized, so that the bottom plate waterproof layer 2 at the lap joint part of the external corner of the bottom plate is protected from being damaged in the main body construction process after the bottom waterproof construction of the underground comprehensive pipe gallery base layer is completed, and the waterproof quality of the external corner of the bottom plate is ensured.
Compared with the traditional waterproof construction of the external corner of the bottom plate, the construction method is simple, does not need to build a protective wall, reduces the engineering cost, accelerates the progress, and is beneficial to shortening the construction period.
The construction site is deep foundation pit operation, the protection wall is not built to carry out waterproof construction on the external corner of the bottom plate, the construction speed is high, the construction period is shortened, the exposure time of the foundation pit is effectively reduced, materials such as bricks and the like do not need to be hung into the foundation pit, and the construction period progress and the foundation pit safety are effectively improved.
It should be noted that the silicone oil paper layer 3 is laid on the bottom plate waterproof structure, the mortar isolation layer 8 and the bottom plate waterproof structure are isolated by the silicone oil paper layer 3, mortar is prevented from being bonded with the waterproof layer, the waterproof layer at the position is protected by the mortar isolation layer 8, and damage to the main structure in the construction process is avoided. The mortar in the mortar isolation layer 8 is mixed by a field mortar mixer and manually transported to the working surface of the waterproof layer, and the bottom plate isolation layer is firmly bonded with the bottom plate waterproof structure without hollowing; the surface of the mortar isolation layer 8 is formed by a wooden trowel, the waterproof layer 2 of the bottom plate cannot be damaged in the construction process of the mortar isolation layer 8, and when mortar is constructed at the position of the silicone oil paper layer 3, whether silicone oil paper is smooth or not needs to be noticed, so that the mortar isolation layer 8 and the waterproof layer 2 of the bottom plate are separated by the silicone oil paper.
Particularly, when the urban underground comprehensive pipe gallery bottom plate is subjected to waterproof construction, the operation is carried out from a low position to a high position.
When the waterproof reinforcing structure is in actual use, a pouring template is arranged at the edge of the horizontal waterproof reinforcing section, so that the waterproof protective layer 7 on the outer side of the bottom plate can be poured conveniently. The mortar of the waterproof protective layer 7 on the outer side of the bottom plate is formed by mixing cement and mortar in a ratio of 1:2.5, the pouring thickness is 40mm, a template needs to be installed on the edge of the cushion layer before pouring, the mortar is intensively mixed on site, a crane discharges the mortar, and the mortar is manually transported and poured under a pipe gallery, is trowelled and is maintained.
As shown in fig. 1 to 5, in the first step of the present embodiment, the waterproof floor structure includes a waterproof floor base layer 1 horizontally laid on the top of the mat layer and a waterproof floor layer 2 horizontally disposed on the top of the waterproof floor base layer 1, and the top of the waterproof floor base layer 1 is closely attached to the bottom of the waterproof floor layer 2; the length of bottom plate waterproof basic unit 1 with the length of bottom plate waterproof layer 2 equals, the width of bottom plate waterproof basic unit 1 with the width of bottom plate waterproof layer 2 equals, bottom plate waterproof basic unit 1 with the width of bottom plate waterproof layer 2 all is greater than the width of piping lane major structure 10.
During actual use, the thickness of the bottom plate waterproof basic layer 1 is 150mm, the bottom plate waterproof basic layer 1 is formed by pouring C20 concrete, the surface of the bottom plate waterproof basic layer 1 is a smooth surface, the base surface is inspected and accepted before the bottom plate waterproof basic layer 1 is constructed, no sundries exist on the surface of the basic layer, the base surface is firm, flat and dry, and construction is carried out after the base surface which is uneven or has cracks is leveled by using 901 glue mixed with cement.
In actual use, the total thickness of the waterproof layer 2 of the bottom plate is 2mm, a one-cloth four-coating process is adopted, and the waterproof layer 2 of the bottom plate is coated on the whole width of the base layer. When the waterproof layer 2 of the base plate is laid, firstly, water is added according to the base surface and weather conditions in a diluted mixing ratio of 10:6:0.15, the surface of the base layer is treated, the force is uniformly applied when the waterproof layer is coated, the distance between the coating width and the side edge of the reinforced cloth layer is 10cm, after the first coating is finished, whether pores or bubbles exist is checked, and if so, the local coating is carried out once again; then reinforcing concrete quality defect repairing positions, wall capillary crack positions, construction joints, wall outlet pipe orifices, internal corners and external corners and the like, wherein the coating comprises the following liquid materials: powder lot: the weight ratio of water is 1: 1.6: 0.5; then laying the reinforced cloth layer; and finally, brushing the residual slurry on the reinforced cloth layer by using a rolling brush for three times, wherein the brushing is carried out after the last step of actual drying each time.
The waterproof structure is characterized in that a reinforced cloth layer is horizontally arranged in the bottom plate waterproof layer 2 and arranged along the longitudinal extending direction of the bottom plate waterproof layer 2, and the reinforced cloth layer is formed by a plurality of reinforced cloths which are sequentially and continuously laid along the width direction of the bottom plate waterproof layer 2. When the reinforced cloth is actually used, the width of an overlapping area between two adjacent reinforced cloths is 10 cm; the distance between two adjacent reinforced cloth along the length direction of the reinforced cloth is not less than 50 cm.
As shown in fig. 1, in the second step in this embodiment, the outer side surface of the silicone paper layer 3 is flush with the outer side surface of the waterproof structure of the base plate, and the inner side surface of the silicone paper layer 3 is flush with the outer side wall of the main structure 10 of the pipe rack; the silicone paper layer 3 is composed of a plurality of silicone papers which are sequentially and continuously paved along the width direction of the bottom plate waterproof structure.
As shown in fig. 1, in the second step of the present embodiment, the width of the silicone oil paper layer 3 is L, and the value range of L is
。
As shown in fig. 4, in the sixth embodiment, in the step 6, the waterproof reinforcing layer includes an oblique reinforcing section obliquely laid on the oblique surface of the supporting chamfer structure 5, a horizontal waterproof reinforcing section horizontally laid on the top of the floor waterproof layer 2, and a vertical waterproof reinforcing section vertically arranged outside the side wall of the pipe rack main body structure 10; the oblique reinforcing section, the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section are integrally formed; the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section are equal in length, and the end of the horizontal waterproof reinforcing section is flush with the outer side face of the bottom plate waterproof structure. In practical use, the length of the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section can be selected to be 250 mm.
As shown in fig. 5, in the seventh step, the side wall waterproof structure 9 and the bottom plate waterproof structure have the same structure, the side wall waterproof structure 9 is tightly attached to the outer side wall of the pipe rack main structure 10, and the side wall waterproof structure 9 is coated from bottom to top along the longitudinal extension direction of the pipe rack main structure 10.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A waterproof construction method for external corners of bottom plates of urban underground comprehensive pipe galleries is characterized by comprising the following steps: the method comprises the following steps:
step one, smearing a waterproof structure of a bottom plate: smearing a bottom plate waterproof structure on the top of a cushion layer of a pipe gallery main body structure (10) to be constructed; the width of the bottom plate waterproof structure is larger than that of the pipe gallery main body structure (10), and the bottom plate waterproof structure is coated from low to high along the longitudinal extension direction of the pipe gallery main body structure (10);
step two, paving a silicone oil paper layer: paving a silicone paper layer (3) on the top of the finished floor waterproof structure; the silicone oil paper layer (3) is paved from low to high along the longitudinal extension direction of the waterproof structure of the bottom plate; the bottom of the silicone paper layer (3) is tightly attached to the top of the bottom plate waterproof structure, and the silicone paper layer (3) is arranged on the outer side of the pipe gallery main body structure (10);
step three, coating a mortar isolation layer: coating mortar isolation layers (8) on the top of the bottom plate waterproof structure and the top of the silicone oil paper layer (3); the mortar isolation layer (8) is coated from low to high along the longitudinal extension direction of the bottom plate waterproof structure, and the width of the mortar isolation layer (8) is equal to that of the bottom plate waterproof structure;
step four, pouring a bottom plate protective layer and carrying out main body construction:
step 401, pouring a bottom plate protective layer (4) on the top of the coated mortar isolation layer (8); the width of the bottom plate protective layer (4) is equal to that of the pipe gallery main body structure (10), and the bottom plate protective layer (4) is poured from low to high along the longitudinal extension direction of the pipe gallery main body structure (10);
402, after the bottom plate protective layer (4) is finally set, constructing the pipe gallery main structure (10) on the bottom plate protective layer (4), wherein the outer side surface of the bottom plate protective layer (4) is flush with the outer side wall of the pipe gallery main structure (10);
step five, removing part of the mortar isolation layers and leveling the chamfer:
step 501, tapping the mortar isolation layer (8) positioned on the outer side of the pipe gallery main body structure (10) and dismantling the mortar isolation layer until the outer side surface of the mortar isolation layer (8) is flush with the outer side surface of the bottom plate protection layer (4);
502, removing the silicone paper layer (3) positioned on the outer side of the pipe gallery main body structure (10), wherein the exposed top surface of the bottom plate waterproof structure and the outer side surface of the bottom plate protective layer (4) form a transition chamfer area; the transition chamfer area is distributed along the longitudinal extension direction of the bottom plate protective layer (4), and the longitudinal section of the transition chamfer area is a right-angled triangle;
step 503, trowelling the transition chamfer area to form a support chamfer structure (5), wherein the support chamfer structure (5) is arranged along the longitudinal extension direction of the pipe gallery main body structure (10); the longitudinal section of the supporting chamfer structure (5) is a right-angled triangle, and the top of the supporting chamfer structure (5) and the top surface of the bottom plate protective layer (4) are arranged in the same horizontal plane;
step six, smearing an outer waterproof layer and a waterproof reinforcing layer: coating an outer waterproof layer (11) on the outer side of the side wall of the pipe gallery main structure (10), coating a waterproof reinforcing layer (6) on the outer side of the outer waterproof layer (11) after the outer waterproof layer (11) is solidified, wherein the outer waterproof layer (11) covers the outer side wall of the pipe gallery main structure (10), the supporting chamfer structure (5) and the exposed bottom plate waterproof structure; the outer waterproof layer (11) and the waterproof reinforcing layer (6) are attached to each other, and the outer waterproof layer (11) and the waterproof reinforcing layer (6) are arranged along the longitudinal extension direction of the pipe gallery main body structure (10);
seventhly, pouring a waterproof protective layer on the outer side of the bottom plate and sticking a side wall protective layer:
701, pouring a bottom plate outer side waterproof protective layer (7) on a horizontal section of the waterproof reinforcing layer (6), wherein the thickness of the bottom plate outer side waterproof protective layer (7) is 30-50 mm, the bottom plate outer side waterproof protective layer (7) is arranged along the longitudinal extension direction of the pipe gallery main body structure (10), and the outer side surface of the bottom plate outer side waterproof protective layer (7) is flush with the outer side surface of the bottom plate waterproof structure;
step 702, after the bottom plate outer side waterproof layer (7) is finally set, vertically pasting a side wall waterproof structure (9) on the outer side of the side wall of the pipe rack main body structure (10), wherein the bottom surface of the side wall waterproof structure (9) is tightly attached to the top surface of the bottom plate outer side waterproof layer (7).
2. The urban underground comprehensive pipe gallery bottom plate external corner waterproof construction method according to claim 1, characterized in that: in the first step, the bottom plate waterproof structure comprises a bottom plate waterproof base layer (1) horizontally laid on the top of the cushion layer and a bottom plate waterproof layer (2) horizontally arranged on the top of the bottom plate waterproof base layer (1), and the top of the bottom plate waterproof base layer (1) is tightly attached to the bottom of the bottom plate waterproof layer (2); the length of bottom plate waterproof basic unit (1) with the length of bottom plate waterproof layer (2) is equal, the width of bottom plate waterproof basic unit (1) with the width of bottom plate waterproof layer (2) equals, bottom plate waterproof basic unit (1) with the width of bottom plate waterproof layer (2) all is greater than the width of piping lane major structure (10).
3. The urban underground comprehensive pipe gallery bottom plate external corner waterproof construction method according to claim 1, characterized in that: in the second step, the outer side surface of the silicone oil paper layer (3) is flush with the outer side surface of the bottom plate waterproof structure, and the inner side surface of the silicone oil paper layer (3) is flush with the outer side wall of the pipe rack main body structure (10); the silicone paper layer (3) is composed of a plurality of silicone papers which are sequentially and continuously paved along the width direction of the bottom plate waterproof structure.
4. The urban underground comprehensive pipe gallery bottom plate external corner waterproof construction method according to claim 1, characterized in that: in the second step, the width of the silicone oil paper layer (3) is L, and the value range of L is
。
5. The urban underground comprehensive pipe gallery bottom plate external corner waterproof construction method according to claim 2, characterized in that: in the sixth step, the waterproof reinforcing layer (6) comprises an oblique reinforcing section obliquely laid on the oblique surface of the supporting chamfer structure (5), a horizontal waterproof reinforcing section horizontally laid on the top of the bottom plate waterproof layer (2), and a vertical waterproof reinforcing section vertically arranged on the outer side of the side wall of the pipe gallery main structure (10); the oblique reinforcing section, the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section are integrally formed; the horizontal waterproof reinforcing section and the vertical waterproof reinforcing section are equal in length, and the end of the horizontal waterproof reinforcing section is flush with the outer side face of the bottom plate waterproof structure.
6. The urban underground comprehensive pipe gallery bottom plate external corner waterproof construction method according to claim 1, characterized in that: seventhly, the side wall waterproof structures (9) and the bottom plate waterproof structures are identical in structure, the side wall waterproof structures (9) are tightly attached to the outer side wall of the pipe rack main body structure (10), and the side wall waterproof structures (9) are coated from bottom to top along the longitudinal extending direction of the pipe rack main body structure (10).
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Application publication date: 20210903 Assignee: POWERCHINA SEPCO1 ELECTRIC POWER CONSTRUCTION Co.,Ltd. Assignor: SINOHYDRO BUREAU 3 Co.,Ltd. Contract record no.: X2024980002901 Denomination of invention: A Waterproofing Construction Method for the Bottom Plate and External Corner of Urban Underground Comprehensive Pipe Gallery Granted publication date: 20220708 License type: Common License Record date: 20240318 |