CN111472816B - Construction method of corrugated plate support structure and subway cross passage - Google Patents
Construction method of corrugated plate support structure and subway cross passage Download PDFInfo
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- CN111472816B CN111472816B CN202010422301.9A CN202010422301A CN111472816B CN 111472816 B CN111472816 B CN 111472816B CN 202010422301 A CN202010422301 A CN 202010422301A CN 111472816 B CN111472816 B CN 111472816B
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 230000008093 supporting effect Effects 0.000 claims description 88
- 238000000034 method Methods 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000001351 cycling effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 238000003672 processing method Methods 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 241001023788 Cyttus traversi Species 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
本发明涉及地铁通道支护领域，具体而言，涉及一种波纹板支护结构的施工方法和地铁横通道。波纹板支护结构的施工方法包括如下步骤：步骤一，马头门上台阶破除；步骤二，上台阶首榀环腰梁架立；步骤三，上台阶波纹板架立，上台阶环形腰梁架立，安装纵向槽钢；步骤四，上台阶施工一定距离后，停止施工；步骤五，马头门下台阶破除；步骤六，上台阶首榀环腰梁架立；步骤七，上台阶波纹板架立，上台阶环形腰梁架立，安装纵向槽钢；步骤八，成环一榀后，在波纹板背后回填注浆；步骤九，循环步骤一至步骤八。本发明通过内支护环带和外支护环梁的设置，使得横通道的整体支护强度得到极大的提高，保证了横通道的支护效果。
The present invention relates to the field of subway channel support, and specifically, to a construction method of a corrugated plate support structure and a subway cross channel. The construction method of the corrugated plate support structure includes the following steps: step one, breaking the upper step of the horse head door; step two, erecting the first ring waist beam of the upper step; step three, erecting the corrugated plate of the upper step, erecting the ring waist beam of the upper step, and installing the longitudinal channel steel; step four, after the upper step is constructed for a certain distance, stop the construction; step five, breaking the lower step of the horse head door; step six, erecting the first ring waist beam of the upper step; step seven, erecting the corrugated plate of the upper step, erecting the ring waist beam of the upper step, and installing the longitudinal channel steel; step eight, after forming a ring, backfilling and grouting behind the corrugated plate; step nine, looping steps one to eight. The present invention greatly improves the overall support strength of the cross channel by setting the inner support ring belt and the outer support ring beam, thereby ensuring the support effect of the cross channel.
Description
Technical Field
The invention relates to the field of subway channel support, in particular to a construction method of a corrugated plate support structure and a subway transverse channel.
Background
The subway horizontal channel construction needs to use steel grating and shotcrete to carry out the preliminary bracing when the construction, and this kind of support mode uses the electric welding machine in the use, spouts anchor mix and can produce smog, dust pollution to surrounding environment, and in addition, traditional preliminary bracing mode compares with the assembled support mode, and the process is numerous, and the efficiency of construction is bottom, influences the construction progress.
However, in the assembled supporting mode, the supporting strength is relatively low due to the spliced annular structure.
Disclosure of Invention
The invention aims to provide a construction method of a corrugated plate supporting structure and a subway transverse channel, which can effectively improve the supporting strength of an assembled supporting mode.
Embodiments of the present invention are implemented as follows:
A construction method of a corrugated plate supporting structure comprises the following steps:
Step one, breaking steps on a horsehead door;
Step two, erecting a waist beam of a first truss ring of an upper step;
Thirdly, erecting an upper step corrugated plate, erecting an upper step annular waist beam, and installing longitudinal channel steel;
step four, stopping construction after the step is constructed for a certain distance;
step five, breaking the lower step of the horsehead door;
step six, erecting a waist beam of the first truss ring of the upper step;
step seven, erecting an upper step corrugated plate, erecting an upper step annular waist beam, and installing longitudinal channel steel;
step eight, after forming a ring of roof truss, back filling and grouting behind the corrugated plate;
Step nine, cycling the steps one to eight.
In the preferred embodiment of the invention, in the third step, the corrugated plate is erected and the annular waist beam is erected for cyclic construction.
In the preferred embodiment of the present invention, in the third step, after the annular wale is erected, the foothold is installed.
In the preferred embodiment of the invention, when the step III is carried out on the upper step corrugated plate frame, a temporary support is additionally arranged on the upper step, and two sides of the temporary support are connected with the annular waist beam.
In a preferred embodiment of the present invention, the temporary support is padded below the temporary support, and the actual height can be adjusted by using a jack.
In the preferred embodiment of the present invention, in the third step, the arch wire position corrugated plate is connected to the ring wale node by three-sided socket joint.
In a preferred embodiment of the present invention, in the fourth step, the step up construction is performed at a distance of 2 meters to 5 meters.
In the preferred embodiment of the invention, the flange plates are arranged on the corrugated plates, and when the corrugated plates with the upper steps or the corrugated plates with the lower steps are erected, the flange plates on the adjacent corrugated plates are connected by using bolts, so that the corrugated plates are erected.
In a preferred embodiment of the invention, a gasket is provided between two flanges of the bolted connection between adjacent corrugated plates when they are connected, for preventing water seepage between the corrugated plates.
A subway transverse passage constructed using the construction method of the corrugated plate supporting structure of any one of the above.
The embodiment of the invention has the beneficial effects that:
Through the arrangement of the inner supporting ring belt and the outer supporting ring beam, the overall supporting strength of the transverse channel is greatly improved, and the supporting effect of the transverse channel is ensured.
The annular plate belt of the inner supporting ring belt and the annular waist beam are arranged, so that the inner supporting ring belt can support in a large area, a large amount of outer supporting ring beams are not needed, and the cost is reduced as the same as the guaranteed supporting strength.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a construction process flow diagram of a corrugated plate supporting structure provided by an embodiment of the invention;
Fig. 2 is a schematic structural view of a corrugated plate supporting structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
Fig. 4 is a schematic diagram of a connection structure between an outer support ring beam and an inner support ring belt of the corrugated plate support structure according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a cross beam or a vertical beam of a corrugated plate supporting structure according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the positions of end plates of cross beams or vertical beams of a corrugated plate supporting structure according to an embodiment of the present invention;
Fig. 7 is a schematic view of an installation structure between a cross beam and a vertical beam in a corrugated plate supporting structure according to an embodiment of the present invention;
Fig. 8 is a schematic structural view of a steel support of a supporting structure of a corrugated plate in a tunnel primary stage according to an embodiment of the present invention;
Fig. 9 is a schematic structural diagram of an adjusting device of a supporting structure of a corrugated plate in a tunnel primary stage according to an embodiment of the present invention;
Fig. 10 is a reference view of a usage state of a steel support of a supporting structure of a corrugated plate in a tunnel primary stage according to an embodiment of the present invention.
In the figure:
1, a cross beam; the steel plate type steel plate grouting device comprises a vertical beam, an inner supporting ring belt, a grouting layer, a corrugated plate, an annular waist beam, an outer connecting plate, 8I-steel, a 9 end plate, 10 mounting holes, 11 a base, 12 an adjusting device, 13a vertical support, 14 a transverse support, 15 a core soil, 16 a decompression groove, 17 an upper plate, 18 a fixing rod, 19 a fixing sleeve, 20 a lower plate, 21 a lower adjusting rod, 22 an adjusting sleeve, 23 an upper adjusting rod, 24a rotary hoop and 25 a longitudinal channel steel.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the invention, the construction process of the corrugated plate supporting structure is as follows:
1. Reinforcing a horsehead door;
2. the step on the horsehead door is broken;
3. the annular waist beam of the first truss of the upper step is erected, and a foot locking anchor rod is arranged;
4. the corrugated plate of the upper step is erected, the annular waist beam 6 is provided with a foot locking anchor rod, and a longitudinal channel steel is installed, (the third part is constructed in a circulating way);
5. erecting a temporary support;
6. stopping the cover at the upper step construction footage of about 3 m;
7. breaking the lower step of the horsehead door;
8. the first truss of the lower step is erected and forms a ring with the annular waist beam 6 of the upper step, and a foot locking anchor rod is arranged;
9. The corrugated plate of the lower step is erected, the annular waist beam 6 is provided with foot locking anchor rods, longitudinal channel steel 25 is installed, and after each annular truss is formed, the back of the primary footage is supported, and grouting is carried out;
10. removing the temporary support;
11. and (5) circularly constructing the upper and lower steps forwards.
The corrugated plate supporting structure is constructed, the working procedure is simple, the construction efficiency is effectively improved, and the main flow is earth excavation, corrugated plate installation (bolting), back filling and grouting after primary support.
Adopt buckled plate supporting construction, effectively solved traditional construction technology loaded down with trivial details problem, improved the efficiency of construction, reduce the cost of labor for production progress.
The upper step of the first truss is installed, wherein 1 point is arranged on the upper part of the vault, 1 point is arranged above arch feet of the upper steps on two sides, and the position of the waist beam of the ring of the first truss is determined through the lower return values of the 3 points.
In the invention, when the corrugated plate is installed and constructed, temporary supports 24 can be added on the upper steps in consideration of arch sinking, as shown in fig. 8 and 10, node plates and ring waist beam node plates are bolted on two sides of the temporary supports 24. The arch foot of the corrugated plate and the lower part of the temporary support are all required to be padded, and the temporary support is removed alternately after the corrugated plate of the lower step is looped.
Through the setting of interim support, can improve and construct the precision, reduce simultaneously and subside.
Specifically, as shown in fig. 8, the temporary support comprises a transverse support 14 and a vertical support 13, the transverse support 14 is located on core soil 15, a decompression groove 16 is formed below the core soil 15, the vertical support 13 is vertically arranged on the transverse support 14, bases 11 are arranged on two sides of the transverse support 14 and on the top of the vertical support 13, and the bases 11 play a supporting role on the corrugated plates 5.
The temporary support is only applied when the structure is not looped, and for the sake of convenience of reuse, an adjusting device 12 is provided between the base 11 and the steel support, and the support length is adjusted by hand screwing.
Specifically, as shown in fig. 9, the adjusting device 12 includes an upper plate 17, a lower plate 20, a fixing sleeve 19, a fixing lever 18, an upper adjusting lever 23, a lower adjusting lever 22, and an adjusting sleeve 22.
The upper plate 17 and the lower plate 20 are oppositely arranged in parallel, the plurality of fixing rods 18 are arranged on the upper plate 17, the plurality of fixing sleeves 19 are arranged on the lower plate 20, the fixing sleeves 19 are sleeved on the fixing rods 18, the upper adjusting rods 23 are fixedly arranged on the upper plate 17, the lower adjusting rods 22 are fixedly arranged on the lower plate 20, the upper ends of the adjusting sleeves 22 are in threaded connection with the upper adjusting rods 23, the lower ends of the adjusting sleeves 22 are in rotary connection with the lower adjusting rods 22, the distance between the upper plate 17 and the lower plate 20 is adjusted in a threaded screw mode, and further steel support disassembly and fixation can be facilitated, and recycling is achieved.
More specifically, the lower adjusting rod 22 is provided with the rotary hoop 24, the outer part of the rotary hoop 24 is protruded, and the rotary hoop 24 is provided with the steel balls, so that the rotating effect of the adjusting sleeve 22 is ensured, and the adjusting sleeve 22 can be axially positioned.
The corrugated plate at the arching line position is connected with the joint of the ring waist beam in a three-face socket joint mode, the corrugated plate at other positions is staggered with the joint of the ring waist beam, and the bolt holes are properly encrypted and adjusted at the joint of the ring waist beam.
The construction of the corrugated plate supporting structure is controlled from the process of processing the corrugated plate, the corrugated plate is processed by a factory type numerical control machine tool, raw material blanking is mechanically controlled, plates are rolled into wave shapes, flanges are formed by laser cutting, holes are reserved by laser cutting, and the like, and the precision of numerical control processing control parameters is higher than that of the grid arch frame, so that the error probability in the installation process is reduced due to the high precision of the corrugated plate.
The corrugated plate is installed and connected by adopting the flange plate to be connected by bolts, so that the installation size is more easily determined, and the construction precision is improved.
The corrugated plate support structure is constructed, the corrugated plate is reserved for backfilling grouting joints according to a design drawing when being processed in a factory, the corrugated plate is installed according to the drawing, when the mileage of backfilling grouting is reached, the corrugated plate can be directly connected with the backfilling grouting joints on site, and the backfilling grouting after primary backing is carried out, so that the construction efficiency, the construction accuracy and the standardization are improved.
In the construction of the corrugated plate supporting structure, in order to solve groundwater exudation from the flange joint of the corrugated plate, a waterproof rubber mat is added at the flange joint of the corrugated plate, and the initial back filling grouting is timely carried out in the process of the construction of the corrugated plate, and meanwhile, longitudinal channel steel is installed on the inner side of the corrugated plate, so that the corrugated plate is prevented from unevenly settling, the flange joint is caused to infiltrate, and the safety of tunnel construction is ensured.
The following describes in detail the structure used in some embodiments of the present invention with reference to fig. 2-7. The following embodiments and features of the embodiments may be combined with each other, or the features of the embodiments and features of the embodiments may be combined with each other, without any conflict.
A corrugated plate supporting structure comprises an inner supporting ring belt 3 and an outer supporting ring beam, wherein the inner supporting ring belt 3 is arranged in the outer supporting ring beam, the inner wall of the inner supporting ring belt 3 is tangent to the inner wall of the outer supporting ring beam, the inner supporting ring belt 3 comprises n supporting plate belts and n+1 annular waist beams 6, the supporting plate belts are arranged between two adjacent annular waist beams 6, and the annular waist beams 6 at two ends of the inner supporting ring belt 3 are connected with the outer supporting ring beam.
In this embodiment, through the setting of interior support clitellum 3 and outer support ring beam for inside and outside combine, can effectual increase buckled plate supporting structure's stability and supporting intensity.
Specifically, in this embodiment, the inner support ring belt 3 includes a support plate belt and an annular wale 6, the support plate belt mainly plays a role in supporting in a large area, and the annular wale 6 is equivalent to a framework of the inner support ring belt 3, and can play a role in improving supporting force and stability.
In the specific installation, the both ends of every support plate area all with annular waist rail 6 fixed connection, the installation order is annular waist rail 6 promptly, support plate area, annular waist rail 6, support plate area, the structure of annular waist rail 6 promptly, is annular waist rail 6 including the both ends of support ring area 3, through annular waist rail 6 and outer support ring roof rail fixed connection, has guaranteed the intensity of connection and the stability of connection.
In this embodiment, the number of the annular wales 6 included in each inner support ring belt 3 is not necessarily the same, but the number of the annular wales 6 in each inner support ring belt 3 is one more than the number of the support plate belts, so as to ensure the connection strength and the connection stability between the support plate belts and the outer support ring beams.
When the outer wall is installed to the outer support ring beam and the inner support ring belt 3, the outer side of the whole corrugated plate support structure is grouted through the opening in the inner support ring belt 3 to form a grouting layer 4, at the moment, the outer support ring beam is integrally fixed by mortar of the grouting layer 4, and the stability of the inner support ring belt 3 is greatly improved due to the fixed connection between the inner support ring belt 3 and the outer support ring beam, so that the support strength and the support effect of a transverse channel are greatly improved.
In a preferred embodiment of the present invention, the support sheet belt comprises a plurality of corrugated sheets 5, which corrugated sheets 5 are connected in turn to form a loop.
In this embodiment, the support plate belt is a ring-shaped belt structure formed by sequentially connecting a plurality of corrugated plates 5.
The primary corrugated plate supporting structure system which takes the corrugated plate 5 as a main stress member has the unique structural advantage, and the corrugated plate 5 carries in both axial and radial directions, thereby increasing the radial rigidity of the structure. The longitudinal corrugation can also play a role in displacement compensation, so that the deformation of surrounding rocks is better adapted to, and particularly for an underground tunnel, the larger deformation of the surrounding rocks can exert the advantages of the corrugated plate 5 in the circumferential direction and the longitudinal bidirectional bearing, the load effect of vertical soil pressure is dispersed, the overall flexible bearing greatly improves the shock resistance and fatigue performance of the structure, and the isotropy characteristic of the steel is fully exerted. When the corrugated plate 5 is used as a plate supporting structure, the cross section types (horseshoe shape, pear shape, tubular shape, box shape, round shape and the like) with different cross section forms can be adjusted according to stratum characteristics and use requirements.
In the preferred embodiment of the present invention, the inner wall of the inner supporting ring belt 3 is also provided with an axial fixing beam, and the axial fixing beam is fixedly connected with the annular waist beam 6.
Through the setting of axial fixity roof beam, link together adjacent annular waist rail 6, form a complete skeleton texture, can effectually increase the support intensity and the support stability of interior support clitellum 3.
Specifically, the axial fixing beam may be arranged in two ways, one way is that two ends of the axial fixing beam are respectively and fixedly connected with the side wall connected with the corrugated plate 5 on the annular waist beam 6, and the other way is that the length of the axial fixing beam is the same as the width of the inner supporting ring belt 3, and the axial fixing beam is fixedly arranged on the inner side of the annular waist beam 6 and is connected with all the annular waist beams 6.
More specifically, in the present embodiment, the fixing connection manner between the axial fixing beam and the annular wale 6 may be a bolt connection, or may be welding, riveting, or the like, as long as it is possible to fix the axial fixing beam to the annular wale 6.
In the preferred embodiment of the present invention, the length direction of the axial fixing beam is parallel to the axis of the support ring belt, that is, the axial fixing beam is perpendicular to the annular wale 6, so that the strength and stability of the whole inner support ring belt 3 can be ensured to the greatest extent.
It should be noted that the axial fixing beam and the annular waist beam 6 may be perpendicular, or may be non-perpendicular, and may be set according to the specific situation of the transverse channel, so long as the supporting strength of the inner supporting ring belt 3 can be ensured.
In the preferred embodiment of the invention, the outer support ring beam comprises a cross beam 1 and a vertical beam 2, and the cross beam 1 and the vertical beam 2 are connected in sequence to form a square ring beam.
Specifically, the outer support ring beam keeps two cross beams 1 and two vertical beams 2, and when in specific installation, as shown in fig. 3, the cross beams 1 and the vertical beams 2 are fixedly connected with an annular waist beam 6 at the end part of the inner support ring belt 3.
In this embodiment, a specific fixed connection mode is bolting.
It should be noted that the fixed connection manner between the transverse beam 1 and the annular waist rail 6 and the fixed connection manner between the vertical beam 2 and the annular waist rail 6 can be bolt connection, and other fixed connection manners such as riveting, welding and the like can be adopted.
More specifically, after the inner support ring belt 3 and the outer support ring beam are installed, as the annular waist beam 6 is arc-shaped, the cross beam 1 and the vertical beam 2 are linear, and after the two are fixedly connected, a gap is formed between the two annular waist beams 6, so that part of positions cannot be supported.
In order to avoid the occurrence of the above-mentioned situation, in this embodiment, an annular waist beam 6 for special-shaped processing is disposed between two adjacent annular waist beams 6 at the position, that is, the portion of the integral annular waist beam 6 is cut off to form an arc waist beam for supplementary support, two end portions of the arc waist beam are fixedly connected with inner side walls of the cross beam 1 and the vertical beam 2 respectively, and two opposite side walls of the arc waist beam are fixedly connected with the annular waist beam 6 respectively, so that the integral support of the cross channel is ensured.
In the preferred embodiment of the invention, the transverse beam 1 and the vertical beam 2 each comprise an inner profile and an outer web 7, the outer webs 7 being arranged on opposite sides of the inner profile.
In this embodiment, crossbeam 1 and vertical beam 2 all include inside formation and outer connecting plate 7, through the setting of outer connecting plate 7, can form a whole with a plurality of inside section bars, have guaranteed holistic supporting strength.
Specifically, a plurality of internal profiles are arranged side by side, and then are connected through the outer connecting plates 7 arranged on two opposite sides to form a complete whole.
In this embodiment, in order to be convenient for the installation between crossbeam 1 and the vertical beam 2, be provided with end plate 9 in the tip of inside section bar, outer connecting plate 7, end plate 9, outer connecting plate 7 connect gradually, form U type structure, can more guarantee intensity and stability between a plurality of inside section bars.
As shown in fig. 7, when the cross member 1 and the vertical member 2 are fixedly connected, the end plate 9 of the cross member 1 may be abutted against the outer connection plate 7 of the vertical member 2 and then fixedly connected by bolts.
More specifically, in the preferred embodiment of the invention, the inner profile is a double-spliced I-steel 8.
In this embodiment, the strength of the i-steel 8 is relatively high, and the i-steel can meet the supporting requirement of the transverse channel after double-splicing arrangement.
Specifically, in this embodiment, the upper and lower end surfaces of the i-beam 8 are fixedly connected with the outer connecting plate 7.
More specifically, in the preferred embodiment of the present invention, the outer connection plate 7 is provided with mounting holes 10 for cooperating with bolts to achieve connection with the inner support.
In order to reduce the number of the mounting holes 10 on the outer connecting plate 7, in this embodiment, when the cross beam 1 or the vertical beam 2 is connected to the annular wale 6, the mounting holes 10 at the connection positions thereof are arranged corresponding to the mounting holes 10 on the annular wale 6, and the same bolt is used to realize the mounting.
In the preferred embodiment of the invention, the vertical beams 2 are formed by splicing a plurality of vertical beams.
In a normal transverse channel, the height is generally relatively high, and the length of the vertical beam 2 required is also relatively long, so that in order to facilitate transportation, in this embodiment, the vertical beam 2 is formed by splicing a plurality of vertical beams.
Specifically, after the shorter vertical beams 2 are prefabricated in a factory, the shorter vertical beams are transported to a construction site and spliced to reach a preset height.
Because the beam 1 needs a large supporting force, in this embodiment, it is generally not recommended that the beam 1 performs multiple splicing processes.
A subway transverse tunnel constructed using the construction method of any one of the above.
The embodiment of the invention has the beneficial effects that:
through the arrangement of the inner supporting ring belt 3 and the outer supporting ring beam, the overall supporting strength of the transverse channel is greatly improved, and the supporting effect of the transverse channel is ensured.
The arrangement of the annular plate belt of the inner supporting ring belt 3 and the annular waist beam 6 ensures that the inner supporting ring belt can support in a large area, does not need a large amount of outer supporting ring beams, and reduces the cost on the same supporting strength.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The construction method of the corrugated plate supporting structure is characterized by comprising the following steps of:
Step one, breaking steps on a horsehead door;
Step two, erecting a waist beam of a first truss ring of an upper step;
Thirdly, erecting an upper step corrugated plate, erecting an upper step annular waist beam, and installing longitudinal channel steel;
step four, stopping construction after the step is constructed for a certain distance;
step five, breaking the lower step of the horsehead door;
step six, erecting a waist beam of a first truss ring of a lower step;
Step seven, erecting a lower step corrugated plate, erecting an upper step annular waist beam, and installing longitudinal channel steel;
step eight, after forming a ring of roof truss, back filling and grouting behind the corrugated plate;
step nine, cycling the steps one to eight;
When the step III is carried out on the step III, a temporary support is added on the step III, and two sides of the temporary support are connected with the annular waist beam;
The temporary support comprises a transverse support and a vertical support, the transverse support is located on core soil, a decompression groove is formed below the core soil, the vertical support is vertically arranged on the transverse support, bases are arranged on two sides of the transverse support and on the top of the vertical support, and the bases play a role in supporting the corrugated plates;
an adjusting device is arranged between the base and the steel support;
the adjusting device comprises an upper plate, a lower plate, a fixed sleeve, a fixed rod, an upper adjusting rod, a lower adjusting rod and an adjusting sleeve;
The upper plate and the lower plate are oppositely arranged in parallel, a plurality of fixing rods are arranged on the upper plate, a plurality of fixing sleeves are arranged on the lower plate, and the fixing sleeves are sleeved on the fixing rods; the upper adjusting rod is fixedly arranged on the upper plate, the lower adjusting rod is fixedly arranged on the lower plate, the upper end of the adjusting sleeve is in threaded connection with the upper adjusting rod, the lower end of the adjusting sleeve is in rotary connection with the lower adjusting rod, and the space between the upper plate and the lower plate is adjusted in a threaded screw manner, so that the temporary support can be recycled;
The corrugated plate supporting structure further comprises an inner supporting ring belt and an outer supporting ring beam, wherein the inner supporting ring belt is arranged in the outer supporting ring beam, the inner wall of the inner supporting ring belt is tangent to the inner wall of the outer supporting ring beam, the inner supporting ring belt comprises n supporting plate belts and n+1 annular waist beams, the supporting plate belts are arranged between two adjacent annular waist beams, and the annular waist beams at two ends of the inner supporting ring belt are connected with the outer supporting ring beam;
The support plate belt is of an annular belt-shaped structure formed by sequentially connecting a plurality of corrugated plates;
An axial fixing beam is further arranged on the inner wall of the inner supporting ring belt, the axial fixing beam is fixedly connected with the annular waist beam, and after the outer supporting ring beam and the inner supporting ring belt are installed, grouting is conducted to the outer side of the integral corrugated plate supporting structure through an opening on the inner supporting ring belt to form a grouting layer;
the outer support ring beam comprises two cross beams and two vertical beams, wherein the cross beams and the vertical beams are fixedly connected with the annular waist beams at the end parts of the inner support ring belt, and a gap is formed between the two annular waist beams;
The special-shaped processing method of the annular waist beams comprises the steps of cutting off the whole annular waist beams to form arc waist beams for supplementing support, wherein two end parts of the arc waist beams are fixedly connected with the cross beams and the inner side walls of the vertical beams respectively, and two opposite side walls of the arc waist beams are fixedly connected with the annular waist beams respectively;
the transverse beams and the vertical beams comprise inner sectional materials and outer connecting plates, wherein the outer connecting plates are arranged on two opposite sides of the inner sectional materials;
The end part of the inner section bar is provided with an end plate, and the outer connecting plate, the end plate and the outer connecting plate are sequentially connected to form a U-shaped structure;
when the cross beam is fixedly connected with the vertical beam, the end plate of the cross beam is abutted with the outer connecting plate of the vertical beam, and then the cross beam is fixedly connected with the outer connecting plate of the vertical beam through bolts.
2. The construction method of a corrugated plate supporting structure according to claim 1, wherein in the third step, the corrugated plate is erected and the annular wale is erected, and the cyclic construction is performed.
3. The method of constructing a corrugated board support structure according to claim 1, wherein in the third step, a foothold is installed after the annular wale is erected.
4. The method of constructing a corrugated board supporting structure according to claim 1, wherein the lower portion of the temporary support is padded and the actual height is adjusted by a jack.
5. The method of constructing a corrugated panel support structure according to claim 1, wherein in the third step, the corrugated panel and the ring wale node are connected in a three-sided socket joint manner at the arching line position.
6. The method of constructing a corrugated board support structure according to claim 1, wherein in the fourth step, the upper step is constructed at a distance of 2 to 5 meters.
7. The construction method of a corrugated plate supporting structure according to claim 1, wherein a flange is provided on the corrugated plate, and when the corrugated plate of an upper step or the corrugated plate of a lower step is erected, the flange on the adjacent corrugated plate is connected by using bolts, thereby realizing the erection of the corrugated plate.
8. The construction method of a corrugated plate supporting structure according to claim 7, wherein a gasket is provided between two flanges of the bolt connection for preventing water seepage between the corrugated plates when the adjacent corrugated plates are connected.
9. A subway transverse tunnel constructed by using the construction method of the corrugated plate supporting structure as claimed in any one of claims 1 to 8.
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| CN202010422301.9A CN111472816B (en) | 2020-05-19 | 2020-05-19 | Construction method of corrugated plate support structure and subway cross passage |
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| CN202010422301.9A CN111472816B (en) | 2020-05-19 | 2020-05-19 | Construction method of corrugated plate support structure and subway cross passage |
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| CN115492613B (en) * | 2022-08-29 | 2025-03-25 | 中铁十五局集团有限公司 | A construction method for temporary supporting structure of corrugated plate for initial support of traveling tunnel |
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