CN106836564B - A formwork support method for the inner partition load-bearing wall of an underground station - Google Patents
A formwork support method for the inner partition load-bearing wall of an underground station Download PDFInfo
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- CN106836564B CN106836564B CN201710001051.XA CN201710001051A CN106836564B CN 106836564 B CN106836564 B CN 106836564B CN 201710001051 A CN201710001051 A CN 201710001051A CN 106836564 B CN106836564 B CN 106836564B
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- Prior art keywords
- bearing wall
- inner partition
- concrete
- template
- load
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
本发明提供了一种地下车站内隔承重墙模板支护方法。其中所述支护方法包括：A、在已经建好的肋板上设置若干用于注浆的第一预留孔；B、通过所述第一预留孔注浆，浇筑形成位于顶板的梁下方的内隔承重墙。通过在肋板上设置第一预留孔浇筑混凝土，提高了承重墙充盈率，使浇筑质量有效提高，保证了内隔承重墙墙体的施工质量，并且能够大量减少满堂脚手架或三角撑的搭设工程量，为其它工序施工提供了较大的工作面，从而有效的降低了材料成本，缩短施工工期。
The invention provides a formwork support method for an inner partition load-bearing wall of an underground station. The supporting method includes: A. setting a number of first reserved holes for grouting on the already constructed rib; B. grouting through the first reserved holes to form beams on the roof The inner partition load-bearing wall below. By setting the first reserved hole on the rib for pouring concrete, the filling rate of the load-bearing wall is improved, the pouring quality is effectively improved, the construction quality of the inner-partition load-bearing wall is guaranteed, and the erection of scaffolding or triangular braces can be greatly reduced. The amount of engineering provides a larger working surface for the construction of other processes, thereby effectively reducing the cost of materials and shortening the construction period.
Description
Technical Field
The invention relates to the field of underground engineering construction, in particular to a method for supporting an underground station inner partition bearing wall formwork.
Background
Along with the expansion of the building field of China to the underground space, the underground engineering is also developed in the direction of ultra-deep, super-large, complex and multiform. The construction process of underground engineering is increasingly complex and the construction difficulty is gradually increased.
The appearance of underground continuous walls and inner support supporting systems brings great development to underground engineering, but simultaneously also provides higher technical requirements for side wall construction, particularly the concrete volume of the inner wall of the structure such as a subway station and the like which is poured at one time is larger, and if the traditional full hall scaffold system is adopted, the problems of difficult side wall concrete pouring, difficult maintenance, long turnover period of templates and supports, more materials and the like exist. In addition, due to the erection of the full-hall frame body, other processes in the foundation pit cannot be constructed. If the construction progress is accelerated, the construction quality of the wall body cannot be guaranteed.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a method for supporting an inner partition bearing wall formwork of an underground station, and aims to solve the problems that in the prior art, the construction speed of a main body inner wall is low, the turnover period of a support is long, and the construction quality of a wall body is not high in the underground engineering construction process.
The technical scheme of the invention is as follows:
a method for supporting an inner partition bearing wall formwork of an underground station comprises the following steps:
A. arranging a plurality of first preformed holes for grouting on the built rib plates;
B. and grouting through the first preformed hole to form an inner partition bearing wall below the beam of the top plate.
The method for supporting the template of the inner partition bearing wall of the underground station comprises the following steps:
b1, building an inner partition bearing wall template and a corresponding scaffold;
b2, overlapping the steel bars between the top plate and the inner partition load-bearing wall upright;
b3, grouting the inner partition bearing wall template through the first reserved hole, and pouring concrete to form the inner partition bearing wall.
The method for supporting the template of the inner partition bearing wall of the underground station comprises the following steps of A1:
b11, determining the position of a stand column of the inner partition load-bearing wall;
b12, leveling layer plastering;
b13, arranging an inner partition bearing wall template;
b14, checking the diagonal, the verticality and the position of the inner partition bearing wall template;
b15, mounting a column hoop at the position of the upright column of the internal partition load-bearing wall;
b16, checking and correcting.
In the method for supporting the template of the inner partition bearing wall of the underground station, in the step B1, before the template of the inner partition bearing wall is built, the method further comprises the following steps:
and B0, uniformly coating a release agent on the template splicing blocks forming the inner partition load-bearing wall template.
The method for supporting the template of the inner partition bearing wall of the underground station comprises the following steps of B1:
after the internal corner mold of the internal partition bearing wall mold plate is erected, the transverse back ridge of the wall body mold plate of the internal partition bearing wall mold plate extends to the internal corner mold, and the transverse back ridge is fixed with the corresponding internal corner mold or wall body mold plate through the split bolts.
The method for supporting the template of the inner partition bearing wall of the underground station comprises the following steps of B2: and binding the steel bars in layers and in batches and staggering all steel bar welding joints according to the preset structural requirement.
The method for supporting the template of the inner partition bearing wall of the underground station comprises the following steps of A3:
b31, arranging a plurality of rows of second preformed holes for vibrating concrete on the inner partition bearing wall body;
b32, vibrating the concrete through the second preformed hole;
and B33, when concrete is poured to the height of the second preformed hole, closing the corresponding second preformed hole.
In the method for supporting the template of the bearing wall in the underground station, in the step A, a plurality of first preformed holes are arranged along a straight line parallel to the top surface of a top plate to form a first preformed hole row; the distance between the center of the first preformed hole and the top surface of the top plate is 500 mm.
Has the advantages that: the formwork supporting method for the inner partition bearing wall of the underground station can greatly reduce the construction amount of scaffold bodies or triangular supports in full hall, and provides a larger working surface for construction of other working procedures, so that the material cost is effectively reduced, and the construction period is shortened. And, set up first preformed hole pouring concrete through on the roof for pour the quality and improve, guaranteed the construction quality of interior partition bearing wall body.
Drawings
Fig. 1 is a flow chart of a method for supporting an underground station internal partition bearing wall formwork in the embodiment of the invention.
Fig. 2 is a schematic structural diagram of a top plate in an embodiment of the present invention.
FIG. 3 is a side view of a top plate according to an embodiment of the present invention.
Figure 4 is a schematic structural view of an inner partition load-bearing wall and a ceiling in an embodiment of the present invention.
Fig. 5 is a flowchart of a method for constructing the formwork of the inner partition load-bearing wall in the embodiment of the invention.
Fig. 6 is a schematic structural view of a formwork for an inner partition load-bearing wall in an embodiment of the present invention.
Fig. 7 is a schematic view of the steel bar lap joint between the top plate and the inner partition load-bearing wall upright in the embodiment of the invention.
Fig. 8 is a schematic distribution diagram of second preformed holes in the embodiment of the present invention.
Fig. 9 is a schematic structural view of a subway station according to an embodiment of the present invention.
Detailed Description
The invention provides a method for supporting an underground station inner partition bearing wall template, which is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a method for supporting a template of an inner partition bearing wall of an underground station in a specific embodiment of the present invention includes the following steps:
and S1, arranging a plurality of first preformed holes for grouting on the built ribbed plates.
The first preformed hole is particularly used for pouring concrete into the inner partition bearing wall at the lower part of the top plate in the construction part of the subsequent inner partition bearing wall, and the first preformed hole is used as a grouting hole. Fig. 2 is a schematic structural diagram of a top plate in an embodiment of the present invention. Preferably, as shown in fig. 2, the plurality of first preformed holes 200 are arranged in a line parallel to the top surface of the top plate 100 (particularly, arranged on the beams of the top plate 100), forming a row of first preformed holes 200. The number of the first preformed holes 200 may be set according to actual conditions or design strength requirements, and is not described herein.
In addition, as shown in fig. 3, the center of the first preformed hole 200 (i.e., the first preformed hole row) needs to have a certain distance from the top plate 100 in order to provide a sufficient grouting space. Preferably, the distance x between the center of the first preformed hole 200 and the top surface of the top plate 100 is 500 mm. Of course, a larger or smaller distance may be selected according to actual requirements.
The method for arranging the first preformed hole 200 on the beam of the top plate 100 can well combine the inner partition bearing wall with the top plate 100 when the inner partition bearing wall is poured, and effectively ensures the construction quality of the wall.
Fig. 4 is a schematic structural view of an inner partition load-bearing wall and a top plate according to an embodiment of the present invention. Wherein 300 is an inner partition bearing wall; 310 is a second reserved hole on the inner partition load-bearing wall.
And S2, grouting through the first preformed hole, and pouring to form an inner partition load-bearing wall below the beam of the top plate. (i.e., inner partition load-bearing wall construction)
Specifically, the construction of the inner partition bearing wall may include formwork erecting of the inner partition bearing wall (i.e., building a second formwork support frame, and laying an inner partition bearing wall formwork on the second formwork support frame); and (3) lapping the steel bars between the top plate and the upright columns of the inner partition load-bearing wall and pouring (pouring) concrete.
In an embodiment of the present invention, as shown in fig. 5, the step S2 of erecting the inner partition load-bearing wall may include:
and S21, determining a column mould (namely a column template of the inner partition bearing wall), namely the position of the column. Position lines can be drawn at the corresponding positions with chalk or the like.
And S22, leveling layer plastering.
And S23, arranging an inner partition load-bearing wall template. The inner partition load-bearing wall formwork can be composed of a plurality of formwork connecting blocks, and the formwork connecting blocks can be dies made of any suitable materials, such as steel dies and the like.
And S24, checking the diagonal, the verticality and the position of the inner partition bearing wall template. And the accurate construction of the inner partition bearing wall template is ensured by checking template data such as diagonal lines, verticality and positions.
And S25, installing a column hoop at the position of the upright column of the internal partition load-bearing wall.
And S26, checking and correcting. And finally, further checking and correcting to ensure the construction quality of the underground structure.
Of course, in a preferred embodiment, before the installation of the internal partition load-bearing wall form, the step F0 of uniformly coating a release agent on the form splicing blocks that are spliced to form the internal partition load-bearing wall form may also be included. When the formwork is erected, the joints of the formwork splicing blocks can be adhered by using double-sided adhesive tapes, and the joints of the formwork splicing blocks are processed. It should be noted that the corners of the wall need to be inspected to keep the lap joints between the formwork panels tight. Fig. 6 is a schematic structural view of an inner partition load-bearing wall formwork according to an embodiment of the present invention. Wherein, 400 is the formwork support frame (i.e. the second formwork support frame) of the inner partition load-bearing wall.
In addition, after the internal corner mold of the internal partition bearing wall template is erected (namely, the internal corner mold and the corresponding support frame are installed), the transverse back edge of the wall body template of the internal partition bearing wall template extends to the internal corner mold, and a split bolt penetrates through the internal corner mold and the internal corner mold to be fixed with the corresponding internal corner mold or the wall body template. The method can ensure the squareness of the template angle and avoid the occurrence of the template running condition.
The step of lapping the steel bars between the top plate and the inner partition load-bearing wall upright specifically comprises the following steps: according to the preset structural requirements, the steel bars (the reserved steel bars of the top plate and the steel bars of the inner partition bearing wall upright columns) are layered and bound in batches, and all steel bar welding joints are staggered according to the specifications (the steel bar overlapping operation specifications). The specific rebar lap joint is shown in fig. 7.
The preset structural requirements can be determined according to actual conditions, and specifically, the structural requirements for ensuring the stability of the integral structure of the steel reinforcement framework under corresponding conditions and preventing the dislocation and deformation of the steel reinforcement framework when concrete is poured are met. It should be noted that in the case of overlapping reinforcing bars, it is preferable to pay attention to the following: first, the joint of the stirrup and the longitudinal steel bar at the corner should be uniformly bound, and the straight part of the stirrup and the joint of the longitudinal steel bar can be bound in a jump manner. Secondly, firm reliable ligature reinforcing bar prevents that the reinforcing bar from warping pine and taking off and welding. And finally, the main ribs and the distribution ribs at the deformation joints are not required to contact the water stop belts and the joint filling plates. Through the detail parameters and the steps, the stability of the whole steel reinforcement framework structure and the final construction quality of the top plate and the wall body can be effectively guaranteed.
The concrete pouring (pouring) step specifically comprises: firstly, a plurality of rows of second preformed holes for vibrating concrete are arranged on the wall body of the internal partition load-bearing wall. Then, vibrating the concrete through the second preformed hole; and after the concrete is poured to the height of the second preformed hole, closing the corresponding second preformed hole.
Fig. 8 is a schematic structural diagram of a second preformed hole in the embodiment of the present invention. The second preformed hole 310 is arranged in a similar manner to the first preformed hole 200, and a plurality of rows of the second preformed holes 310 are arranged on the inner partition load-bearing wall 300 in the same straight line. The second preformed holes 310 may also be arranged at intervals. As shown in fig. 8, two rows of second prepared holes 310 are provided. In actual construction, the poured concrete can be vibrated through the second preformed hole 310, so that the concrete becomes more compact, and the pouring quality is effectively ensured.
Finally, after concrete is poured to the height of the second preformed hole 310, the row of second preformed holes 310 is closed. When concrete is poured into the wall body of the internal separation load-bearing wall 300 through the first preformed hole 200 and reaches the position of the second preformed hole 310 after vibration, the second preformed hole 310 is closed to prevent the concrete from overflowing.
The operations of vibrating the concrete and sealing the second preformed holes can be repeated until the concrete pouring is completed, and all the second preformed holes of the inner partition bearing wall are sealed to form the inner partition bearing wall.
The invention also provides an underground structure, as shown in fig. 9, comprising a top plate 100 and an inner partition load-bearing wall 300, wherein the top plate 100 and the inner partition load-bearing wall 300 are formed by pouring by using the inner partition load-bearing wall formwork supporting method.
In conclusion, the method for supporting the formwork of the inner partition bearing wall of the underground station accelerates the construction of the inner wall of the main body of the station on the premise of ensuring the safety of the foundation pit and the construction quality, reduces the influence of the construction of the formwork of the inner wall on other working procedures, provides a quick and efficient construction method, ensures the construction quality, simplifies the construction process, saves the construction space and accelerates the construction speed. The construction method avoids the use of a large amount of scaffold bodies or triangular supports in the whole hall, reduces the construction amount of the formwork support frame, reduces the material cost and effectively shortens the construction period. And concrete is poured through the preformed hole, so that the pouring quality is improved, and the construction quality of the wall body is ensured.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (1)
1. A method for supporting an inner partition bearing wall formwork of an underground station is characterized by comprising the following steps:
A. arranging a plurality of first preformed holes for grouting on the built rib plates; the plurality of first preformed holes are arranged on one side of the rib plate along a straight line parallel to the top surface of the top plate to form a first preformed hole row; the distance between the center of the first preformed hole and the top surface of the top plate is 500 mm;
B. grouting through the first preformed hole, and pouring to form an inner partition bearing wall positioned below a rib plate of the top plate, wherein the inner partition bearing wall is combined with the top plate when being poured;
the step B specifically comprises the following steps:
b1, building an inner partition bearing wall template and a corresponding scaffold;
b2, overlapping the steel bars between the top plate and the inner partition load-bearing wall upright;
b3, grouting the inner partition bearing wall template through the first reserved hole, and pouring concrete to form the inner partition bearing wall;
the step B1 further includes:
after the internal corner mold of the internal partition bearing wall mold plate is erected, extending the transverse back edge of the wall body mold plate of the internal partition bearing wall mold plate to the internal corner mold, and fixing the transverse back edge with the corresponding internal corner mold or wall body mold plate through split bolts;
the step B3 specifically includes:
b31, arranging a plurality of rows of second preformed holes for vibrating concrete on the inner partition bearing wall body;
b32, vibrating the concrete through the second preformed hole;
b33, when concrete is poured to the height of the second preformed hole, closing the corresponding second preformed hole;
the poured concrete is vibrated through the second reserved hole, so that the concrete becomes more compact, and the pouring quality is effectively ensured;
in the step A, a plurality of first preformed holes are arranged along the length direction of the rib plate to form a first preformed hole row;
the step B1 specifically includes:
b11, determining the position of a stand column of the inner partition load-bearing wall;
b12, leveling layer plastering;
b13, arranging an inner partition bearing wall template;
b14, checking the diagonal, the verticality and the position of the inner partition bearing wall template;
b15, mounting a column hoop at the position of the upright column of the internal partition load-bearing wall;
b16, checking and correcting;
in the step B1, before the inner partition load-bearing wall template is built, the method further comprises the following steps:
b0, uniformly coating a release agent on the template splicing blocks forming the inner partition bearing wall template;
the step B2 specifically includes: and binding the steel bars in layers and in batches and staggering all steel bar welding joints according to the preset structural requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001051.XA CN106836564B (en) | 2017-01-03 | 2017-01-03 | A formwork support method for the inner partition load-bearing wall of an underground station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001051.XA CN106836564B (en) | 2017-01-03 | 2017-01-03 | A formwork support method for the inner partition load-bearing wall of an underground station |
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| CN106836564A CN106836564A (en) | 2017-06-13 |
| CN106836564B true CN106836564B (en) | 2020-04-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331679A (en) * | 1994-06-07 | 1995-12-19 | Kajima Corp | Placing method of rising concrete on the basement floor by reverse construction method |
| US8048346B2 (en) * | 2006-03-24 | 2011-11-01 | Murphy Mark W | Septic tank fabrication system |
| CN102561402A (en) * | 2010-12-22 | 2012-07-11 | 中国二十冶集团有限公司 | Treatment method for construction joint between top plate and wall of individual underground civil air defense project constructed by covered top-down excavation method |
| CN105839850A (en) * | 2016-03-25 | 2016-08-10 | 温州建设集团有限公司 | Basement reverse-construction scape post-casting pre-stressed construction method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485366B (en) * | 2013-09-30 | 2015-05-13 | 中铁一局集团有限公司 | Safe stress conversion construction method for improvement on main structure of subway station |
-
2017
- 2017-01-03 CN CN201710001051.XA patent/CN106836564B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331679A (en) * | 1994-06-07 | 1995-12-19 | Kajima Corp | Placing method of rising concrete on the basement floor by reverse construction method |
| US8048346B2 (en) * | 2006-03-24 | 2011-11-01 | Murphy Mark W | Septic tank fabrication system |
| CN102561402A (en) * | 2010-12-22 | 2012-07-11 | 中国二十冶集团有限公司 | Treatment method for construction joint between top plate and wall of individual underground civil air defense project constructed by covered top-down excavation method |
| CN105839850A (en) * | 2016-03-25 | 2016-08-10 | 温州建设集团有限公司 | Basement reverse-construction scape post-casting pre-stressed construction method |
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