CN112854293A - Structure of wall door opening of subway station auxiliary and main body connecting section and construction process thereof - Google Patents
Structure of wall door opening of subway station auxiliary and main body connecting section and construction process thereof Download PDFInfo
- Publication number
- CN112854293A CN112854293A CN202011632680.0A CN202011632680A CN112854293A CN 112854293 A CN112854293 A CN 112854293A CN 202011632680 A CN202011632680 A CN 202011632680A CN 112854293 A CN112854293 A CN 112854293A
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- door opening
- main body
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- bottom plate
- station
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Abstract
The invention discloses a structure of a subway station subsidiary and main body connecting section diaphragm wall door opening and a construction process thereof, comprising a station main body structure and a station subsidiary structure, wherein the upper ends of the station main body structure and the station subsidiary structure are respectively provided with a main body structure top plate and a subsidiary structure top plate, the lower ends of the station main body structure and the station subsidiary structure are respectively provided with a main body structure middle plate and a subsidiary structure bottom plate, the upper end of the main body structure top plate is provided with a capping beam, an underground continuous wall, a crown beam and a concrete support, a temporary road is arranged above the concrete support: reserving a first concrete support and a crown beam of the main foundation pit in the range of the connecting section; additionally arranging a capping beam; excavating an auxiliary foundation pit; constructing an auxiliary structure bottom plate, and increasing a concave force transmission plate strip in construction; constructing side walls and top plates of the auxiliary structure; integrally digging a wall door opening of the connecting section; the invention has the beneficial effects that the construction of the post-cast section of the connecting section is as follows: the method has the advantages that the effective supporting is completed, the door opening is excavated, safety and reliability are realized, the whole excavation of the large-span door opening is guaranteed, the segmental construction is avoided, the construction joints and leakage risks are reduced, and the construction period and the cost are saved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a structure of a wall door opening of a connection section of an auxiliary body and a main body of a subway station and a construction process thereof.
Background
At present, the construction of the domestic subway station mostly adopts an open cut method, is influenced by a construction site and traffic guidance, generally constructs a main structure firstly, guides a temporary road to the upper part of the main structure after the main structure is capped, and finally constructs an auxiliary structure. Since there is usually a temporary guide road above the main structure, when the auxiliary structure is communicated with the main structure, the ground wall cannot be directly chiseled off from the ground to the base of the auxiliary structure, so that a door opening needs to be cut on the ground wall to reserve the ground wall at the upper end and prevent the temporary road from collapsing. The door opening with small span can be directly drilled, but the door opening with large span needs sectional support and sectional drilling.
The existing underground diaphragm wall door opening chiseling construction of the subway station comprises the following steps:
1. chiseling out the wall door opening in sections (the length of each section is not larger than 4 m);
2. supporting the top section steel;
3. constructing a post-pouring section of the top plate of the auxiliary structure in the small section range;
4. after the post-cast section reaches the design strength, performing excavation construction of the next small section of the ground wall door opening, wherein the construction method is the same as the steps 1 to 3;
5. repeating the step 4 until the ground wall door opening is excavated;
6. and cutting off the top supporting section steel.
The construction process wastes resources and affects the construction period, the number of construction joints is large, the later-stage leakage risk is large, the construction cost is increased, and the construction efficiency is reduced.
Disclosure of Invention
The invention aims to provide a structure of a wall door opening of a connection section of an auxiliary body and a main body of a subway station and a construction process thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the structure of the subway station attachment and main body connection section wall door opening comprises a station main body structure and a station attachment structure, wherein a main body structure top plate and an attachment structure top plate are arranged at the upper ends of the station main body structure and the station attachment structure respectively, a main body structure middle plate and an attachment structure bottom plate are arranged at the lower ends of the station main body structure and the station attachment structure respectively, a capping beam, an underground diaphragm wall, a crown beam and a concrete support are arranged at the upper end of the main body structure top plate respectively, and a temporary road is arranged above the concrete support.
Preferably, a top plate post-pouring section is arranged between the main structure top plate and the auxiliary structure top plate.
Preferably, a bottom plate post-pouring section is arranged between the main structure middle plate and the auxiliary structure bottom plate.
Preferably, the lower end of the bottom plate post-pouring section is respectively provided with an underground continuous wall and a bottom plate concave force transmission plate strip.
Preferably, the upper end of the underground continuous wall is connected with a bottom plate concave force transmission plate strip, and the upper end of the bottom plate concave force transmission plate strip is connected with the auxiliary structure bottom plate and the bottom plate post-pouring section.
The construction process of the wall door opening of the connection section of the auxiliary and main bodies of the subway station comprises the following steps:
the method comprises the following steps: reserving the first concrete support of the main foundation pit in the range of the connecting section and not dismantling the crown beam;
step two: a main structure capping beam is additionally arranged in the range of the connecting section;
step three: excavating an auxiliary foundation pit;
step four: constructing an auxiliary structure bottom plate, and meanwhile, increasing a concave force transmission plate strip in construction;
step five: constructing side walls and top plates of the auxiliary structure;
step six: integrally digging a wall door opening of the connecting section;
step seven: and (5) constructing a post-pouring section of the connecting section.
Preferably, in the first step, the main foundation pit concrete support and the auxiliary structure concrete support share the same crown beam, and the main concrete support is reserved to form an effective support for the upper end of the auxiliary foundation pit.
Preferably, in the second step, the capping beam is connected with the ground wall through the bar planting or embedded steel bar connector, vertical support is carried out on the ground wall structure on the upper portion of the door opening in advance, after the door opening is cut, the dead weight load on the upper portion of the door opening is transmitted to the main structure top plate through the capping beam, and meanwhile, the capping beam also plays a role in retaining soil.
Preferably, in the fourth step, a concave force transmission plate strip is additionally arranged while the auxiliary structure bottom plate is constructed, so that the lower end of the auxiliary foundation pit is supported, and the reinforcing bars of the concave force transmission plate strip are the same as those of the auxiliary structure bottom plate.
Advantageous effects
The structure and the construction process of the subway station subsidiary and main body connecting section wall door opening provided by the invention can complete effective support firstly and then cut the door opening, are safer and more reliable compared with the conventional method, can ensure the one-time integral cutting of the large-span door opening, avoid sectional construction, reduce the risk of construction joints and leakage, improve the efficiency and save the construction period and the cost.
Drawings
FIG. 1 is a schematic elevation view of the integral excavation of a wall door opening at a connecting section of an auxiliary and a main body of a subway station according to the present invention;
fig. 2 is a schematic cross-sectional view of the integral casting of the connection section of the auxiliary and main bodies of the subway station.
Reference numerals
1-crown beam, 2-concrete support, 3-underground diaphragm wall chiseling surface, 4-underground diaphragm wall, 5-bottom plate concave force transmission plate strip, 6-capping beam, 7-temporary road, 8-bottom plate post-pouring section, 9-top plate post-pouring section, 10-main structure top plate, 11-auxiliary structure top plate, 12-station main structure, 13-station auxiliary structure, 14-main structure middle plate and 15-auxiliary structure bottom plate.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Examples
As shown in fig. 1-2, the structure of the wall door opening of the subway station auxiliary and main body connection section includes a station main body structure 12 and a station auxiliary structure 13, wherein the upper ends of the station main body structure 12 and the station auxiliary structure 13 are respectively provided with a main body structure top plate 10 and an auxiliary structure top plate 11, the lower ends of the station main body structure 12 and the station auxiliary structure 13 are respectively provided with a main body structure middle plate 14 and an auxiliary structure bottom plate 15, the upper ends of the main body structure top plates 10 are respectively provided with a capping beam 6, an underground continuous wall 4, a crown beam 1 and a concrete support 2, and a temporary road 7 is arranged above the concrete support 2.
Preferably, a top plate post-pouring section 9 is arranged between the main structure top plate 10 and the auxiliary structure top plate 11.
Preferably, a bottom plate post-pouring section 8 is arranged between the plate 14 of the main structure and the bottom plate 15 of the auxiliary structure.
Preferably, the lower end of the bottom plate post-pouring section 8 is respectively provided with an underground continuous wall 4 and a bottom plate concave force transmission plate strip 5.
Preferably, the upper end of the underground continuous wall 4 is connected with a bottom plate concave force transmission plate strip 5, and the upper end of the bottom plate concave force transmission plate strip 5 is connected with an auxiliary structure bottom plate 15 and a bottom plate post-pouring section 8.
The construction process of the wall door opening of the connection section of the auxiliary and main bodies of the subway station comprises the following steps:
the method comprises the following steps: reserving the first concrete support of the main foundation pit in the range of the connecting section and not dismantling the crown beam;
step two: a main structure capping beam is additionally arranged in the range of the connecting section;
step three: excavating an auxiliary foundation pit;
step four: constructing an auxiliary structure bottom plate, and meanwhile, increasing a concave force transmission plate strip in construction;
step five: constructing side walls and top plates of the auxiliary structure;
step six: integrally digging a wall door opening of the connecting section;
step seven: and (5) constructing a post-pouring section of the connecting section.
Preferably, in the first step, the main foundation pit concrete support and the auxiliary structure concrete support share the same crown beam, and the main concrete support is reserved to form an effective support for the upper end of the auxiliary foundation pit.
Preferably, in the second step, the capping beam is connected with the ground wall through the bar planting or embedded steel bar connector, vertical support is carried out on the ground wall structure on the upper portion of the door opening in advance, after the door opening is cut, the dead weight load on the upper portion of the door opening is transmitted to the main structure top plate through the capping beam, and meanwhile, the capping beam also plays a role in retaining soil.
Preferably, in the fourth step, a concave force transmission plate strip is additionally arranged while the auxiliary structure bottom plate is constructed, so that the lower end of the auxiliary foundation pit is supported, and the reinforcing bars of the concave force transmission plate strip are the same as those of the auxiliary structure bottom plate.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the scope of the protection of the present invention.
Claims (9)
1. The structure of the subway station attachment and main body connecting section wall door opening comprises a station main body structure (12) and a station attachment structure (13), and is characterized in that: the station main structure (12) and the station auxiliary structure (13) are respectively provided with a main structure top plate (10) and an auxiliary structure top plate (11), the lower ends of the station main structure (12) and the station auxiliary structure (13) are respectively provided with a main structure middle plate (14) and an auxiliary structure bottom plate (15), the upper end of the main structure top plate (10) is respectively provided with a capping beam (6), an underground continuous wall (4), a crown beam (1) and a concrete support (2), and a temporary road (7) is arranged above the concrete support (2).
2. The structure of a wall door opening of a subway station attachment and main body connection section ground according to claim 1, characterized in that: and a roof post-pouring section (9) is arranged between the main structure roof (10) and the auxiliary structure roof (11).
3. The structure of a wall door opening of a subway station attachment and main body connection section ground according to claim 1, characterized in that: and a bottom plate post-pouring section (8) is arranged between the main structure middle plate (14) and the auxiliary structure bottom plate (15).
4. The structure of a wall door opening of a subway station attachment and main body connection section ground according to claim 3, characterized in that: the lower end of the bottom plate post-pouring section (8) is respectively provided with an underground continuous wall (4) and a bottom plate concave force transmission plate strip (5).
5. The structure of a wall door opening of a subway station attachment and main body connection section ground according to claim 4, characterized in that: the upper end of the underground continuous wall (4) is connected with a bottom plate concave force transmission plate strip (5), and the upper end of the bottom plate concave force transmission plate strip (5) is connected with the auxiliary structure bottom plate (15) and the bottom plate post-pouring section (8).
6. The construction process of the wall door opening of the connection section of the auxiliary and main bodies of the subway station is characterized by comprising the following steps of:
the method comprises the following steps: reserving the first concrete support of the main foundation pit in the range of the connecting section and not dismantling the crown beam;
step two: a main structure capping beam is additionally arranged in the range of the connecting section;
step three: excavating an auxiliary foundation pit;
step four: constructing an auxiliary structure bottom plate, and meanwhile, increasing a concave force transmission plate strip in construction;
step five: constructing side walls and top plates of the auxiliary structure;
step six: integrally digging a wall door opening of the connecting section;
step seven: and (5) constructing a post-pouring section of the connecting section.
7. The construction process of the subway station subsidiary and main body connecting section wall door opening according to claim 6, characterized in that: in the first step, the main foundation pit concrete support and the auxiliary structure concrete support share the same crown beam, and the main concrete support is reserved to form effective support for the upper end of the auxiliary foundation pit.
8. The construction process of the subway station subsidiary and main body connecting section wall door opening according to claim 6, characterized in that: in the second step, the capping beam is connected with the ground wall by adopting a bar planting or embedded steel bar connector, vertical support is carried out on the ground wall structure on the upper portion of the door opening in advance, after the door opening is cut, the dead weight load on the upper portion of the door opening is transmitted to the main structure top plate through the capping beam, and meanwhile, the capping beam also plays a role in retaining soil.
9. The construction process of the subway station subsidiary and main body connecting section wall door opening according to claim 6, characterized in that: and in the fourth step, a concave force transmission plate strip is additionally arranged while the auxiliary structure bottom plate is constructed, so that the lower end of the auxiliary foundation pit is supported, and the reinforcing bars of the concave force transmission plate strip are the same as those of the auxiliary structure bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011632680.0A CN112854293A (en) | 2020-12-31 | 2020-12-31 | Structure of wall door opening of subway station auxiliary and main body connecting section and construction process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011632680.0A CN112854293A (en) | 2020-12-31 | 2020-12-31 | Structure of wall door opening of subway station auxiliary and main body connecting section and construction process thereof |
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| CN112854293A true CN112854293A (en) | 2021-05-28 |
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| CN202011632680.0A Pending CN112854293A (en) | 2020-12-31 | 2020-12-31 | Structure of wall door opening of subway station auxiliary and main body connecting section and construction process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241101A (en) * | 2023-02-21 | 2023-06-09 | 中铁二局集团有限公司 | Construction method for removing continuous wall of connecting section of main body and auxiliary structure of subway station |
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| CN105735246A (en) * | 2016-04-12 | 2016-07-06 | 中铁建大桥工程局集团第四工程有限公司 | Underground building exterior wall and envelop structure and construction method thereof |
| CN106320739A (en) * | 2016-08-29 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Chiseling method of underground continuous wall between auxiliary part and main body of subway station |
| CN107604952A (en) * | 2017-07-26 | 2018-01-19 | 上海市政工程设计研究总院（集团）有限公司 | A kind of underpass spare interface construction excavated from the later stage |
| CN108518084A (en) * | 2018-04-28 | 2018-09-11 | 上海建工二建集团有限公司 | The additional structure and method that shear wall is removed in frame-shear-wall structure |
| JP2019127747A (en) * | 2018-01-24 | 2019-08-01 | 株式会社竹中工務店 | Construction method for structure |
-
2020
- 2020-12-31 CN CN202011632680.0A patent/CN112854293A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105735246A (en) * | 2016-04-12 | 2016-07-06 | 中铁建大桥工程局集团第四工程有限公司 | Underground building exterior wall and envelop structure and construction method thereof |
| CN106320739A (en) * | 2016-08-29 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Chiseling method of underground continuous wall between auxiliary part and main body of subway station |
| CN107604952A (en) * | 2017-07-26 | 2018-01-19 | 上海市政工程设计研究总院（集团）有限公司 | A kind of underpass spare interface construction excavated from the later stage |
| JP2019127747A (en) * | 2018-01-24 | 2019-08-01 | 株式会社竹中工務店 | Construction method for structure |
| CN108518084A (en) * | 2018-04-28 | 2018-09-11 | 上海建工二建集团有限公司 | The additional structure and method that shear wall is removed in frame-shear-wall structure |
Non-Patent Citations (1)
| Title |
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| 华东建筑设计研究院有限公司: "《基础工程技术标准》", 31 July 2018, 同济大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241101A (en) * | 2023-02-21 | 2023-06-09 | 中铁二局集团有限公司 | Construction method for removing continuous wall of connecting section of main body and auxiliary structure of subway station |
| CN116241101B (en) * | 2023-02-21 | 2024-01-23 | 中铁二局集团有限公司 | Construction method for removing continuous wall of connecting section of main body and auxiliary structure of subway station |
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Application publication date: 20210528 |