CN112064673A - Auxiliary enclosure structure of parallel station main body and construction method - Google Patents
Auxiliary enclosure structure of parallel station main body and construction method Download PDFInfo
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- 230000008093 supporting effect Effects 0.000 claims abstract description 79
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- 230000009191 jumping Effects 0.000 abstract description 8
- 210000001503 joint Anatomy 0.000 abstract 1
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- 238000009412 basement excavation Methods 0.000 description 4
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- 238000011065 in-situ storage Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
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- E02D29/00—Independent underground or underwater structures; Retaining walls
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Abstract
The invention belongs to the technical field of station enclosure construction, and particularly provides an auxiliary enclosure structure parallel to a station main body and a construction method, wherein the construction method comprises the following steps of S1: when the auxiliary main body structure is built back to the floor layer, the station main body structure enclosure wall positioned in the middle zone of the auxiliary main body plate and the station main body structure plate is chiseled at intervals to form an auxiliary interface; s2: additionally arranging a supporting plate strip in the auxiliary interface, and pouring the auxiliary structural plate and the supporting plate strip together; s3: after the auxiliary main structure plate reaches the design strength, the support nearby the plate is removed, the station main structure enclosure wall is dug by sectionally jumping the cabin from top to bottom, and the auxiliary structure plates at the rest floor layers are connected. The scheme effectively avoids the situation that the main body enclosure structure is chiseled out in a large area when the auxiliary structural plate is in butt joint with the main body structural plate, after the supporting plate belt is connected with the main body structure, nearby supports can be effectively replaced, and when the supports are detached and the main body enclosure structure of the station is chiseled out in a sectional warehouse jumping mode, the safety and the stability of the main body structure are not affected.
Description
Technical Field
The invention belongs to the technical field of station enclosure construction, and particularly relates to an auxiliary enclosure structure parallel to a station main body and a construction method.
Background
Generally, the subsidiary structure of the subway station is constructed later than the main structure. In a general standard station, an external station auxiliary structure and a main structure have two attachment modes, wherein one mode is vertical to the main structure (the width of an interface position is less than 10 m); the other is parallel to the body structure (the interface site width is greater than 30 m). The first type of auxiliary enclosure structure supporting system is basically not influenced by the main body structure, can be independently constructed outside the main body structure, and has simple and easy enclosure structure arrangement and construction procedures; the second type of auxiliary enclosure structure supporting system needs to use a main structure, and the main structure constructed in advance is used as an auxiliary enclosure support arrangement fulcrum. Because the auxiliary structure has natural contradiction with the replacement and the removal of the main body enclosure structure and the self supporting system in the back-building stage, the arrangement and the removal of the auxiliary support can cause the main body structure to be adversely affected by the asymmetrical excavation working condition. Meanwhile, the main body enclosure structure at the top and bottom plates is chiseled in a large area before the effective fulcrum is not formed at the top and bottom plates, so that the strength and stability of the enclosure structure and a support system are seriously affected. Therefore, the auxiliary enclosure construction process and the support changing scheme need to be carefully considered so as to ensure the construction safety of each structure in the early and later periods. The contradiction is universally existed in each station, and brings potential safety hazard to the auxiliary construction of the station. Meanwhile, the main structure is asymmetrically excavated in the process of arranging and dismantling the auxiliary enclosure structure. It also has some adverse effects on the safety of the main structure.
At present, the investment of the country in the subway construction is huge, and how to solve the scheme of an auxiliary enclosure structure parallel to a main structure generally exists in the design and construction process of each station. Therefore, a general and efficient construction method is urgently needed to solve the technical problems.
Disclosure of Invention
The invention aims to solve the problem that the support replacement and the removal of an auxiliary structure and a main body enclosure structure and a self-supporting system are naturally contradictory in the return construction stage in the prior art.
Therefore, the invention provides an auxiliary enclosure structure parallel to a station main body, which comprises a station auxiliary structure enclosure wall connected with the station main structure enclosure wall and a plurality of layers of auxiliary main structures distributed along the longitudinal direction of the station auxiliary structure enclosure wall, wherein each auxiliary main structure comprises an auxiliary supporting structure and a supporting plate group, auxiliary interfaces are arranged on the station main structure enclosure wall at intervals, one end of each supporting plate group penetrates through each auxiliary interface to be connected with a floor layer of the station main structure, one end of each auxiliary supporting structure at the other end of each supporting plate group is fixedly connected, and the other end of each auxiliary supporting structure is fixedly connected with the station auxiliary structure enclosure wall.
Preferably, the auxiliary supporting structure and the supporting plate group are of an integrated cast-in-place concrete structure.
Preferably, the support plate band group includes a top plate support band, a middle plate support band and a bottom plate reinforcing plate, which are respectively connected to each floor layer of the station main structure in a corresponding manner, and the auxiliary support structure includes an early construction top plate, an early construction middle plate and an early construction bottom plate, which are respectively connected to the top plate support band, the middle plate support band and the bottom plate reinforcing plate in a one-to-one corresponding manner.
Preferably, the span range of the middle plate supporting plate band plate is 2-6m, and the distance is 8-12 m.
Preferably, the auxiliary supporting structure is connected with the station main body structure enclosure wall through a post-cast plate strip.
Preferably, the station auxiliary structure enclosure wall, the auxiliary support structure and the support plate group are all located in a foundation pit.
Preferably, the top of the station main structure enclosure wall and the top of the station auxiliary structure enclosure wall are both provided with crown beams.
The invention also provides a construction method of the auxiliary enclosure structure of the parallel station main body, which comprises the following steps:
s1: when the auxiliary main body structure is built back to the floor layer, the station main body structure enclosure wall positioned in the middle zone of the auxiliary main body plate and the station main body structure plate is chiseled at intervals to form an auxiliary interface;
s2: additionally arranging a supporting plate strip in the auxiliary interface, and pouring the auxiliary structural plate and the supporting plate strip together;
s3: and after the auxiliary main structure plate reaches the design strength, the cabin is jumped from top to bottom in a subsection mode to chive off the station main structure enclosure wall, and the auxiliary structure plates at the positions of the other floor layers are connected.
Preferably, step S3 specifically includes: and (3) chiseling the enclosure wall of the main body structure of the station in the range of the auxiliary interface from top to bottom in a sectional skip mode, pouring a post-pouring plate strip, wherein a width gap of at least 2m is formed between the boundary line of the post-pouring plate strip and the interface of the station.
The invention has the beneficial effects that: the invention provides an auxiliary enclosure structure of a parallel station main body and a construction method, comprising the following steps: s1: when the auxiliary main body structure is built back to the floor layer, the station main body structure enclosure wall positioned in the middle zone of the auxiliary main body plate and the station main body structure plate is chiseled at intervals to form an auxiliary interface; s2: additionally arranging a supporting plate strip in the auxiliary interface, and pouring the auxiliary structural plate and the supporting plate strip together; s3: after the auxiliary main structure plate reaches the design strength, the support nearby the plate is removed, the station main structure enclosure wall is dug by sectionally jumping the cabin from top to bottom, and the auxiliary structure plates at the rest floor layers are connected. The scheme effectively avoids the situation that the main body enclosure structure is chiseled out in a large area when the auxiliary structural plate is butted with the main body structural plate, and the safety and the stability of the main body structure are not influenced. Meanwhile, the supporting plate strips and the auxiliary structural plates are synchronously poured, the integrity of the structural plates is effectively increased, and the number and the length of construction joints of the auxiliary structural plates are reduced. In addition, after the supporting plate belt is connected with the main structure, nearby supports can be effectively replaced, when the supports are removed and the station main body enclosure structure is removed by means of sectional warehouse jumping, the station main structure and the auxiliary structure are safe, and the asymmetric excavation working condition of the main structure is effectively avoided. The method is simple, practical, safe, reliable, good in stress performance, convenient to construct and good in social and economic benefits.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic sectional view of an auxiliary enclosure structure of a parallel station main body and a construction method thereof according to the present invention;
fig. 2 is a schematic plan view of an auxiliary enclosure structure of a parallel station main body and a construction method of the same.
Description of reference numerals: the structure comprises a first support 1, a second support 22, a third support 3, an early construction top plate 4, an early construction middle plate 5, an early construction bottom plate 6, a top plate supporting plate strip 7, a middle plate supporting plate strip 8, a bottom plate reinforcing plate 9, a station main structure enclosure wall 10, a station auxiliary structure enclosure wall 11, a station main structure enclosure wall 12 in an auxiliary interface range, a station main structure enclosure crown beam 13, a station auxiliary enclosure structure crown beam 14, a station main structure enclosure structure retaining wall 15, a station auxiliary enclosure structure retaining wall 16, a station main structure 17, a post-cast plate strip 18 and a post-cast plate strip boundary line 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention provides an auxiliary enclosure structure of a parallel station main body, which comprises a station auxiliary structure enclosure wall 11 connected with a station main structure enclosure wall 10 and a plurality of layers of auxiliary main structure structures distributed along the longitudinal direction of the station auxiliary structure enclosure wall 11 as shown in figures 1 and 2, wherein each auxiliary main structure comprises an auxiliary supporting structure and a supporting plate group, auxiliary interfaces are arranged on the station main structure enclosure wall 10 at intervals, one end of each supporting plate band group penetrates through each auxiliary interface to be connected with a floor layer of a station main structure 17, one end of each auxiliary supporting structure at the other end is fixedly connected, and the other end of each auxiliary supporting structure is fixedly connected with the station auxiliary structure enclosure wall 11.
Therefore, when building the station main structure 17, the station main structure enclosure wall 10 is built first. After the station body is completed, a station attachment structure needs to be constructed to support the station body structure 17, especially floor layers of each floor within the station body structure. When the auxiliary structure of the station is constructed, a foundation pit is excavated, a support is correspondingly arranged at the corresponding position of each floor layer when each floor layer is excavated, then the auxiliary support structure and the support plate groups are cast in situ, and the support plate groups are connected with the supports. And excavating gradually downwards one layer by one layer and continuously pouring the corresponding auxiliary supporting structures and supporting plate groups downwards. And after the auxiliary supporting structure and the supporting plate group reach the design strength, removing the corresponding support. And then pouring the corresponding auxiliary side wall.
When the supporting plate group and the auxiliary supporting structure are constructed, the construction is gradually carried out from the bottom of the foundation pit layer by layer upwards. And constructing one layer, stabilizing and dismantling the support of the layer, and then constructing the other layer upwards. And finally, after the poured side wall and the top auxiliary supporting structure reach the design strength, removing the first support 1, chiseling the station main body structure enclosure wall 10 (pile) within the range of the auxiliary interface from top to bottom in a sectional jumping manner, pouring a post-pouring plate belt 18, wherein the distance between the boundary line of the post-pouring plate belt 18 and the station interface is controlled to be at least 2m, and the specific position can be adjusted according to design and calculation.
Preferably, the auxiliary supporting structure and the supporting plate group are of an integrated cast-in-place concrete structure. And pouring in situ in the foundation pit, wherein the tail end of the supporting plate group is connected with a floor slab layer of the station main body structure through a support erected in advance. The supporting plate groups and the auxiliary structural plates (namely the auxiliary supporting structures) are synchronously poured, so that the integrity of the structural plates is effectively increased, and the number and the length of construction joints of the auxiliary structural plates are reduced.
In a preferred scheme, the support plate band group comprises a top plate support plate band 7, a middle plate support plate band 8 and a bottom plate reinforcing plate 9 which are respectively and correspondingly connected with each floor layer of the station main body structure, and the auxiliary support structure comprises an early construction top plate 4, an early construction middle plate 5 and an early construction bottom plate 6 which are respectively and correspondingly connected with the top plate support plate band 7, the middle plate support plate band 8 and the bottom plate reinforcing plate 9. The number of the support plate band groups is determined according to the number of floors, and each support plate band corresponds to one floor to play a corresponding supporting role.
According to the preferable scheme, the support plate band groups are arranged at intervals along the horizontal direction, and the distance between every two adjacent support plate band groups in the horizontal direction is 8-12 m. And pouring the middle plate 5 and the middle plate supporting plate strip 8 in the early construction, removing the second support after the concrete reaches the design strength, and pouring the corresponding auxiliary side wall, wherein the span of the middle plate supporting plate strip 8 is preferably controlled to be 2-6m, the interval is preferably controlled to be 8-12m, and the specific span and interval are calculated and determined by a design and construction party according to the actual situation on site.
In one particular implementation scenario, the structure is adapted to address an ancillary enclosure parallel to the main structure. The specific principle is that when the auxiliary main body structure is built back to a certain layer of structural slab, the main body guard piles (walls) are chiseled at intervals in the middle zones of the auxiliary main body slab and the main body structural slab, supporting slab bands are additionally arranged, and the auxiliary top slab and the supporting slab bands are cast together. After the auxiliary main body structural slab reaches the design strength, the support nearby the slab is removed, the cabin is stepped from top to bottom, the main body enclosure structure of the station is chiseled, and the rest top plates and the bottom plate are connected. The method effectively avoids the situation that the main body enclosure structure is chiseled out in a large area when the auxiliary structural plate is butted with the main body structural plate, and does not influence the safety and stability of the main body structure. Meanwhile, the supporting plate strips and the auxiliary structural plates are synchronously poured, the integrity of the structural plates is effectively increased, and the number and the length of construction joints of the auxiliary structural plates are reduced. In addition, after the supporting plate belt is connected with the main structure, the supporting effect of nearby supports can be effectively replaced, when the supports are removed and the station main body enclosure structure is chiseled off by sectional warehouse jumping, the station main structure and the auxiliary structure are safe, and the asymmetric excavation working condition of the main structure is effectively avoided.
The invention also provides a construction method of the auxiliary enclosure structure of the parallel station main body, which comprises the following steps:
s1: when the auxiliary main structure is built back to the floor layer, the station main structure enclosure wall 10 positioned in the middle zone of the auxiliary main structure plate and the station main structure plate is removed at intervals to form an auxiliary interface;
s2: additionally arranging a supporting plate strip in the auxiliary interface, and pouring the auxiliary structural plate and the supporting plate strip together;
s3: and after the auxiliary main structure plate reaches the design strength, the cabin is jumped from top to bottom to chive off the station main structure enclosure wall 10, and the auxiliary structure plates at the rest floor layers are connected.
The construction steps in a specific construction scene are as follows:
1. constructing a station main body enclosure structure, which comprises a station main body structure enclosure wall 10 (pile), a station main body enclosure structure crown beam 13 and a station main body enclosure structure retaining wall 15;
2. constructing a main structure of the station;
3. the construction station auxiliary enclosure structure comprises a station auxiliary structure enclosure wall 11 (pile), a station auxiliary enclosure structure crown beam 14 and a station auxiliary enclosure structure retaining wall 16;
4. constructing an auxiliary station supporting structure, excavating an auxiliary station foundation pit from top to bottom, additionally arranging a first support 1, a second support 2 and a third support 3 while excavating, and finally excavating to a substrate;
5. pouring the early construction bottom plate 6 and the bottom plate reinforcing plate 9, dismantling the third support 3 after the concrete of the early construction bottom plate 6 and the bottom plate reinforcing plate 9 reaches the design strength, and pouring the corresponding auxiliary side wall;
6. pouring the middle plate 5 and the middle plate supporting plate belt 8 in the early construction, removing the second support after the concrete reaches the design strength, and pouring the corresponding auxiliary side wall, wherein the span of the middle plate supporting plate belt 8 is preferably controlled to be 2-6m, the interval is preferably controlled to be 8-12m, and the specific span and interval are calculated and determined by a design and construction party according to the actual situation on site;
7. pouring the top plate 4 and the top plate supporting plate strip 7 which are constructed in advance, dismantling the first support 1 after the concrete reaches the design strength, and pouring the auxiliary side wall;
8. after the poured side wall and the top plate reach the designed strength, the first support 1 is detached, the station main body structure enclosure wall 10 (pile) in the auxiliary interface range is removed by means of subsection skip from top to bottom, a post-cast plate strip 18 is poured, the width of at least 2m between the boundary line 19 of the post-cast plate strip and the station interface is controlled, and the specific position can be adjusted according to design and calculation.
The structure and the method for solving the scheme of the auxiliary enclosure structure parallel to the main structure are also suitable for the auxiliary enclosure structure with one support and two supports.
The invention has the beneficial effects that: the invention provides an auxiliary enclosure structure of a parallel station main body and a construction method, comprising the following steps: s1: when the auxiliary main body structure is built back to the floor layer, the station main body structure enclosure wall positioned in the middle zone of the auxiliary main body plate and the station main body structure plate is chiseled at intervals to form an auxiliary interface; s2: additionally arranging a supporting plate strip in the auxiliary interface, and pouring the auxiliary structural plate and the supporting plate strip together; s3: after the auxiliary main structure plate reaches the design strength, the support nearby the plate is removed, the station main structure enclosure wall is dug by sectionally jumping the cabin from top to bottom, and the auxiliary structure plates at the rest floor layers are connected. The scheme effectively avoids the situation that the main body enclosure structure is chiseled out in a large area when the auxiliary structural plate is butted with the main body structural plate, and the safety and the stability of the main body structure are not influenced. Meanwhile, the supporting plate strips and the auxiliary structural plates are synchronously poured, the integrity of the structural plates is effectively increased, and the number and the length of construction joints of the auxiliary structural plates are reduced. In addition, after the supporting plate belt is connected with the main structure, nearby supports can be effectively replaced, when the supports are removed and the station main body enclosure structure is removed by means of sectional warehouse jumping, the station main structure and the auxiliary structure are safe, and the asymmetric excavation working condition of the main structure is effectively avoided. The method is simple, practical, safe, reliable, good in stress performance, convenient to construct and good in social and economic benefits.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (9)
1. The utility model provides an affiliated enclosure of parallel station main part, includes the station affiliated structure enclosure wall of being connected with station major structure enclosure wall, its characterized in that: the auxiliary main body structure comprises an auxiliary supporting structure and a supporting plate group, auxiliary interfaces are arranged on the station main body structure enclosure wall at intervals, one end of the supporting plate group penetrates through the auxiliary interfaces to be connected with a floor layer of the station main body structure, one end of the supporting plate group is fixedly connected with one end of the auxiliary supporting structure, and the other end of the auxiliary supporting structure is fixedly connected with the station auxiliary structure enclosure wall.
2. The auxiliary enclosure structure of the parallel station main body of claim 1, wherein: the auxiliary supporting structure and the supporting plate group are of an integrated cast-in-place concrete structure.
3. The auxiliary enclosure structure of the parallel station main body as claimed in claim 1 or 2, wherein: the supporting plate band group comprises a top plate supporting plate band, a middle plate supporting plate band and a bottom plate reinforcing plate which are respectively and correspondingly connected with each floor layer of the station main body structure, and the auxiliary supporting structure comprises an early construction top plate, an early construction middle plate and an early construction bottom plate which are respectively and correspondingly connected with the top plate supporting plate band, the middle plate supporting plate band and the bottom plate reinforcing plate one by one.
4. The auxiliary enclosure structure of the parallel station main body as claimed in claim 3, wherein: the span range of the middle plate supporting plate band plate is 2-6m, and the distance is 8-12 m.
5. The auxiliary enclosure structure of the parallel station main body of claim 1, wherein: and the auxiliary supporting structure is connected with the station main body structure enclosure wall through a post-pouring plate strip.
6. The auxiliary enclosure structure of the parallel station main body of claim 1, wherein: and the station auxiliary structure enclosure wall, the auxiliary supporting structure and the supporting plate group are all positioned in the foundation pit.
7. The auxiliary enclosure structure of the parallel station main body of claim 1, wherein: and the top parts of the station main structure enclosure wall and the station auxiliary structure enclosure wall are provided with crown beams.
8. A construction method of an auxiliary enclosure structure of a parallel station main body is characterized by comprising the following steps:
s1: when the auxiliary main body structure is built back to the floor layer, the station main body structure enclosure wall positioned in the middle zone of the auxiliary main body plate and the station main body structure plate is chiseled at intervals to form an auxiliary interface;
s2: additionally arranging a supporting plate strip in the auxiliary interface, and pouring the auxiliary structural plate and the supporting plate strip together;
s3: and after the auxiliary main structure plate reaches the design strength, the cabin is jumped from top to bottom in a subsection mode to chive off the station main structure enclosure wall, and the auxiliary structure plates at the positions of the other floor layers are connected.
9. The construction method of an auxiliary enclosure of a parallel station main body according to claim 8, wherein the step S3 specifically includes: and (3) chiseling the enclosure wall of the main body structure of the station in the range of the auxiliary interface from top to bottom in a sectional skip mode, pouring a post-pouring plate strip, wherein a width gap of at least 2m is formed between the boundary line of the post-pouring plate strip and the interface of the station.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010817667.6A CN112064673A (en) | 2020-08-14 | 2020-08-14 | Auxiliary enclosure structure of parallel station main body and construction method |
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| CN202010817667.6A CN112064673A (en) | 2020-08-14 | 2020-08-14 | Auxiliary enclosure structure of parallel station main body and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112900491A (en) * | 2021-01-26 | 2021-06-04 | 中国建筑第八工程局有限公司 | Construction method of sinking type raise |
| CN116950129A (en) * | 2023-09-19 | 2023-10-27 | 北京建工土木工程有限公司 | Construction method for connecting subway station main body with auxiliary structure and post-pouring belt |
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| CN110318418A (en) * | 2019-06-13 | 2019-10-11 | 成都市建筑设计研究院 | A kind of open cut underground station strip accessory structure construction method |
| CN212452772U (en) * | 2020-08-14 | 2021-02-02 | 中铁第四勘察设计院集团有限公司 | Auxiliary enclosure structure of parallel station main body |
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| JP2005068710A (en) * | 2003-08-21 | 2005-03-17 | Haneda Concrete Industrial Co Ltd | Form block for wall, and wall structure, and method for constructing subterranean structure |
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| CN112900491A (en) * | 2021-01-26 | 2021-06-04 | 中国建筑第八工程局有限公司 | Construction method of sinking type raise |
| CN116950129A (en) * | 2023-09-19 | 2023-10-27 | 北京建工土木工程有限公司 | Construction method for connecting subway station main body with auxiliary structure and post-pouring belt |
| CN116950129B (en) * | 2023-09-19 | 2024-01-19 | 北京建工土木工程有限公司 | Construction method for connecting subway station main body with auxiliary structure and post-pouring belt |
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