CN112922025A - Reverse construction method of underground structure - Google Patents
Reverse construction method of underground structure Download PDFInfo
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- CN112922025A CN112922025A CN202110064017.3A CN202110064017A CN112922025A CN 112922025 A CN112922025 A CN 112922025A CN 202110064017 A CN202110064017 A CN 202110064017A CN 112922025 A CN112922025 A CN 112922025A
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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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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Abstract
The invention belongs to the field of underground engineering, and relates to a reverse construction method of an underground structure, which comprises the following steps: 1) constructing a building enclosure, excavating a foundation pit to the position of a structural top plate, constructing the structural top plate and fixing a top plate suspension system on the structural top plate; 2) erecting a vertical bearing system, and connecting the top plate suspension system with the vertical bearing system; 3) continuously excavating to the position of the structural middle plate, constructing the structural middle plate and fixing a middle plate suspension system on the structural middle plate; 4) connecting the middle plate suspension system with the top plate suspension system; 5) continuously excavating to the position of the structural bottom plate, constructing the structural bottom plate, and then constructing the structural side wall and the structural column below the structural middle plate; 6) dismantling the middle plate suspension system, and constructing a structure side wall and a structure column above the middle plate of the structure; 7) the roof suspension system is removed. The invention solves the problem of high cost of the temporary vertical supporting framework of the traditional reverse construction method, does not influence the construction of structural members, and can greatly accelerate the construction speed and improve the construction quality.
Description
Technical Field
The invention belongs to the technical field of underground engineering, and particularly relates to a reverse construction method of an underground structure, which can be widely applied to standard stations, interval engineering and the like which are constructed by a reverse construction method in subway engineering.
Background
The underground station and interval construction method can be mainly summarized as follows: open cut method and cover cut method. The cover-excavation method is divided into two kinds of cover-excavation forward-making and cover-excavation reverse-making, and the construction methods respectively have the application conditions and the advantages and the disadvantages. The conventional cover-excavation reverse construction method is characterized in that the structural plate is used as a support for supporting the foundation pit, and the characteristic of very high rigidity in the plane of the structural plate is utilized, so that the deformation of the foundation pit can be greatly reduced, and the influence of the deformation of the foundation pit on the surrounding environment is reduced; meanwhile, the structural plate replaces the support, so that the workload of constructing and dismantling the support is reduced; FIG. 1 is a schematic view of a conventional reverse-construction method of excavating a slab beneath a structure; however, the conventional reverse construction method also has obvious disadvantages, and the construction method needs to arrange the temporary upright 100 and the temporary upright pile 200 in advance before the reverse construction of the structural slab, wherein the temporary upright 100 generally adopts section steel columns, and the temporary upright pile 200 generally adopts cast-in-situ bored piles. The structural member needs to be temporarily vertically supported by the temporary upright 100, and the structural load (the self weight of the structure, the construction load, etc.) is transmitted to the temporary upright pile 200 at the lower part through the temporary upright 100, so as to meet the vertical bearing requirement. There are two major disadvantages to this approach: the first is that the cost is high, the cost of the reverse construction method is the most from temporary columns and temporary upright piles, and the cost of the temporary columns and the upright piles of the standard station is as high as ten million; secondly, the temporary steel upright posts bring great troubles to the binding of the reinforcing steel bars of the structural member, and influence the construction of the structural member.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a reverse construction method for an underground structure, which solves the problem of high cost of a temporary vertical supporting framework of the traditional reverse construction method, does not influence the construction of structural members, can greatly accelerate the construction speed of the reverse construction method and improve the construction quality of the engineering.
In order to achieve the above object, the technical scheme of the present invention is a reverse construction method for an underground structure, comprising the steps of:
1) constructing a building enclosure, then excavating a foundation pit to the position of a structural top plate, constructing a structural top plate, arranging a top plate suspension fixing system below the structural top plate, reserving a top plate suspension system on the structural top plate, and connecting the top plate suspension system with the top plate suspension fixing system;
2) erecting a vertical bearing system above the foundation pit, and connecting the top plate suspension system with the vertical bearing system;
3) continuously excavating the earth below the top plate of the structure to the position of the middle plate of the structure, constructing the middle plate of the structure, arranging a middle plate suspension fixing system below the middle plate of the structure, reserving a middle plate suspension system on the middle plate of the structure, and connecting the middle plate suspension system with the middle plate suspension fixing system;
4) connecting a middle plate suspension system on a middle plate of the structure with a top plate suspension system on a top plate of the structure;
5) continuously excavating the earth below the structural middle plate to the position of the structural bottom plate, constructing the structural bottom plate, and then constructing the structural side wall and the structural column between the structural middle plate and the structural bottom plate;
6) dismantling the middle plate suspension system and the middle plate suspension fixing system, and constructing a structure side wall and a structure column between the middle plate and the structure top plate of the structure;
7) and (4) removing the top plate suspension system and the top plate suspension fixing system.
Further, in the step 1), when constructing the enclosure structure, reserving a groove at a position corresponding to a structure top plate on the inner side of the enclosure structure; and when the structure top plate is constructed, two ends of the structure top plate are respectively embedded into the grooves of the enclosure structures at two sides.
As an implementation mode, in the step 1), the structural roof is constructed in a prefabricating mode, and the specific method comprises the following steps: prefabricating a structural top plate, and reserving a hole for mounting and fixing a top plate suspension system on the structural top plate; and then conveying the prefabricated structural top plate to a construction site, arranging a top plate suspension fixing system below the structural top plate, installing the top plate suspension system on the structural top plate, connecting the top plate suspension fixing system with the top plate suspension fixing system, and then placing the structural top plate at a designed position.
As another embodiment, in step 1), the structural roof is constructed in a cast-in-place manner, and the specific method comprises the following steps: firstly, installing a top plate template system in a foundation pit, and fixing a top plate suspension fixing system on the top plate template system; then, binding structural roof steel bars on an upper template of the roof template system, and connecting the roof suspension system with the roof suspension fixing system; concrete is poured and one end of the roof suspension system is embedded therein.
Further, in the step 2), fixing the bearing system moving supports on two sides of the foundation pit respectively, erecting a vertical bearing system above the foundation pit, and fixing two ends of the vertical bearing system with the bearing system moving supports on two sides respectively; and 7) moving the vertical bearing system to a new reverse construction working surface through the bearing system moving support to carry out construction of the underground structure of the next construction section.
As an implementation mode, in the step 3), the structural middle plate is constructed in a prefabricating mode, and the specific method comprises the following steps: prefabricating a middle plate of a structure, and reserving a hole for installing and fixing a middle plate suspension system in the middle plate of the structure; and then transporting the prefabricated structural middle plate to a construction site, arranging a middle plate suspension fixing system below the structural middle plate, installing a middle plate suspension system on the structural middle plate, connecting the middle plate suspension fixing system with the middle plate suspension fixing system, and then placing the structural middle plate at a designed position.
As another embodiment, in step 3), the structural middle plate is constructed in a cast-in-place manner, and the specific method comprises the following steps: firstly, a middle plate template system is installed in a foundation pit, and a middle plate suspension fixing system is fixed on the middle plate template system; then binding structural middle plate steel bars on an upper template of the middle plate template system, and connecting the middle plate suspension system with the middle plate suspension fixing system; concrete is poured, and one end of the middle plate suspension system is embedded in the middle plate suspension system.
Compared with the prior art, the invention has the following beneficial effects:
the reverse construction method of the underground structure adopts a whole set of external vertical support system to replace the temporary stand columns and temporary stand column piles of the original reverse construction method, plays a role in supporting the dead weight and construction load of the structural slab in advance, solves the problem of high cost of the temporary vertical support framework of the traditional reverse construction method, does not influence the construction of structural members, can greatly accelerate the construction speed of the reverse construction method engineering, and improves the construction quality of the engineering.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional reverse method of excavating a slab under a structure in the background of the invention;
FIG. 2 is a schematic diagram of a top-down construction of an underground structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a reverse construction method of an underground structure according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a reverse construction method of an underground structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a top-down construction of an underground structure according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a top-down construction of an underground structure according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a top-down construction of an underground structure according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a top-down construction of an underground structure provided by an embodiment of the present invention;
in the figure: 1. a vertical load bearing system; 2. a load bearing system moving carriage; 3. a roof suspension system; 4. a top plate template system; 5. a top plate suspension fixation system; 6. a mid-plate suspension system; 7. a middle plate template system; 8. a middle plate suspension fixing system; 9. an enclosure structure; 10. a structural roof; 11. a structural middle plate; 12. a structural floor; 13. a structural side wall; 14. and (5) a structural column.
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.
As shown in fig. 2 to 8, the present embodiment provides a reverse construction method for an underground structure, including the steps of:
1) constructing a building enclosure 9, dewatering a well, reinforcing and excavating a foundation pit (if any), excavating a foundation pit to the position of a structural top plate 10, constructing the structural top plate 10, arranging a top plate suspension fixing system 5 below the structural top plate 10, reserving a top plate suspension system 3 on the structural top plate 10, and connecting the top plate suspension system 3 with the top plate suspension fixing system 5; the structure top plate 10 is vertically supported through foundation soil;
2) erecting a vertical bearing system 1 above a foundation pit, connecting a top plate suspension system 3 with the vertical bearing system 1, and bearing the dead weight and the construction load of a structural top plate 10 through the top plate suspension system 3, a top plate suspension fixing system 5 and the vertical bearing system 1;
3) continuously excavating the earth below the structural top plate 10 to the position of the structural middle plate 11, constructing the structural middle plate 11, arranging a middle plate suspension fixing system 8 below the structural middle plate 11, and reserving a middle plate suspension system 6 on the structural middle plate 11; connecting the middle plate suspension system 6 with the middle plate suspension fixing system 8; the structural middle plate 11 is vertically loaded through foundation soil;
4) connecting a middle plate suspension system 6 on a structural middle plate 11 with a top plate suspension system 3 on a structural top plate 10, and bearing the dead weight and construction load of the structural middle plate 11 through the middle plate suspension system, a middle plate suspension fixing system 8 and a vertical bearing system 1;
5) continuously excavating the earth below the structural middle plate 11 to the position of the structural bottom plate 12, constructing the structural bottom plate 12, and then constructing the structural side walls 13 and the structural columns 14 between the structural middle plate 11 and the structural bottom plate 12;
6) dismantling the middle plate suspension system 6 on the structural middle plate 11 and the middle plate suspension fixing system 8 below the structural middle plate 11, and constructing the structural side wall 13 and the structural column 14 between the structural middle plate 11 and the structural top plate 10 to complete the construction of all internal structures;
7) the roof suspension system 3 on the structural roof 10 and the underlying roof suspension fixing system 5 are removed.
In the embodiment, the vertical bearing system 1 can adopt structural forms (not limited to structural forms on the figure) such as a steel truss, a gantry crane and the like, can be formed by assembling one or more groups of structures, and is mainly used for bearing the dead weight of a lower structural slab and temporary construction load; the suspension system (the top plate suspension system 3 and the middle plate suspension system 6) can adopt a steel cable, a steel wire rope, a high-strength steel rod piece, a high-strength steel member and the like, is mainly used for suspending the structural plate, supports the self weight and the construction load of the structural plate through the vertical bearing system 1, and can realize the deformation stress control of the structural plate before the completion of the incompletion through the related axial force control and deformation control, thereby improving the safety of the structural plate; the suspension fixing system (the top plate suspension fixing system 5 and the middle plate suspension fixing system 8) can adopt a customized steel template and a high-strength steel framework, and is mainly used for transmitting vertical dead weight load transmitted by a structural member to the suspension system through the suspension fixing system.
The self-weight of the structural member and the temporary construction load in the embodiment are transmitted to the suspension system in a centralized way through the suspension fixing system, the vertical bearing system 1 has enough bearing capacity to bear the load transmitted by all the suspension systems and transmit the load to the enclosing structures 9 at two sides, the enclosing structures 9 are used as the foundation of the vertical bearing system 1, an external vertical supporting system is formed by adopting the vertical bearing system 1, the suspension fixing system and the suspension system to replace a temporary stand column and a vertical supporting system of a temporary stand column pile of the original reverse construction method, not only the cost of a large number of temporary stand columns and stand column piles of the traditional reverse construction method is saved, the cost is reduced, but also the installation and the removal of the enclosing supports are reduced compared with the traditional open cut method, and meanwhile, because the structural plate is used as the foundation pit support, the deformation of the foundation pit enclosing structure can be greatly reduced, meanwhile, environmental deformation caused by foundation pit deformation is reduced.
Further, in the step 1), when the building envelope 9 is constructed, a groove is reserved at a position corresponding to the structure top plate 10 on the inner side of the building envelope 9; and when the structure top plate 10 is constructed, two ends of the structure top plate 10 are respectively embedded into the grooves of the enclosure structures 9 at two sides.
In this embodiment, the structural roof 10 may be constructed in a prefabricated manner or in a cast-in-place manner. As an embodiment, in step 1), the structural roof 10 is constructed in a prefabricated manner, and the specific method comprises the following steps: prefabricating a structural top plate 10, and reserving a hole for mounting and fixing a top plate suspension system 3 in the structural top plate 10; and then, the prefabricated structural roof 10 is transported to a construction site, the roof suspension fixing system 5 is provided under the structural roof 10, the roof suspension system 3 is installed on the structural roof 10 and connected with the roof suspension fixing system 5, and then, the structural roof is placed at a design position. As another embodiment, in step 1), the structural roof 10 is constructed in a cast-in-place manner, and the specific method is as follows: firstly, installing a top plate template system 4 in a foundation pit, and fixing a top plate suspension fixing system 5 on the top plate template system 4; then, binding structural top plate 10 steel bars on the upper template of the top plate template system 4, and connecting the top plate suspension system 3 with the top plate suspension fixing system 5; pouring concrete, and embedding one end of the top plate suspension system 3 therein; and connecting the top plate suspension system 3 with the vertical bearing system 1 after the structural top plate 10 reaches a certain strength. In the embodiment, when the structural top plate 10 is constructed in a prefabricating manner, the top plate template system 4 does not need to be installed, a field formwork does not need to be erected, labor force is saved, and the construction period can be shortened by adopting prefabricated components, so that the construction efficiency and the construction quality are improved; when the cast-in-place construction is adopted, the roof formwork system 4 is installed, so that the structural roof 10 can be quickly poured, temporary formwork support is not needed, the quality of the structural roof 10 is improved, and the construction speed is accelerated; the top plate formwork system 4 can also serve as a load bearing function for the self weight of the structural member.
Further, in the step 2), fixing the bearing system moving supports 2 on two sides of the foundation pit respectively, then erecting the vertical bearing system 1 above the foundation pit, and fixing two ends of the vertical bearing system 1 with the bearing system moving supports 2 on two sides respectively; and 7), completing construction of all structural components (structural columns, structural side walls and structural plates) of the construction section, and moving the vertical bearing system 1 to a new reverse construction working surface through the bearing system moving support 2 to construct the underground structure of the next construction section. Bearing system movable support 2 can adopt in this embodiment to take electronic movable roller, the high hot rolling pulley of activity, and mainly used realizes vertical bearing system 1 along foundation ditch longitudinal movement, along with the completion of structure construction section, moves transform position to next construction section.
In this embodiment, the structural middle plate 11 may be constructed in a prefabricated manner or in a cast-in-place manner. As an implementation manner, in step 3), the structural slab 11 is constructed in a prefabricating manner, and the specific method is as follows: prefabricating a middle plate 11 in the structure, and reserving a hole for installing and fixing a middle plate suspension system 6 in the middle plate 11 in the structure; and then the prefabricated structural middle plate 11 is transported to a construction site, the middle plate suspension fixing system 8 is arranged below the structural middle plate 11, the middle plate suspension system 6 is installed on the structural middle plate 11 and connected with the middle plate suspension fixing system 8, and then the structural middle plate 11 is placed on a designed position. As another embodiment, in step 3), the structural slab 11 is constructed in a cast-in-place manner, and the specific method is as follows: firstly, a middle plate template system 7 is installed in a foundation pit, and a middle plate suspension fixing system 8 is fixed on the middle plate template system 7; then, a structural middle plate 11 steel bar is bound on the upper template of the middle plate template system 7, and the middle plate suspension system 6 is connected with the middle plate suspension fixing system 8; pouring concrete, and embedding one end of the middle plate suspension system 6 therein; the middle plate suspension system 6 is connected with the top plate suspension system 3 after the middle plate 11 of the structure achieves certain strength. In the embodiment, when the structural middle plate 11 is constructed in a prefabricating manner, the middle plate template system 7 does not need to be installed, a formwork is not required to be erected on site, labor force is saved, and the construction period can be shortened by adopting prefabricated components, so that the construction efficiency and the construction quality are improved; when the cast-in-place construction is adopted, the middle plate template system 7 is installed, so that the structural middle plate 11 can be quickly poured, a temporary formwork is not required to be temporarily erected, the quality of the structural middle plate 11 is improved, and the construction speed is accelerated; the middle plate formwork system 7 can also play a role in bearing the dead weight of the structural member.
The structural bottom plate 12, the structural side walls 13 and the structural columns 14 in the embodiment can be constructed in a prefabricated mode or a cast-in-place mode; when the cast-in-place construction is adopted, the structural side walls 13 and the structural columns 14 are constructed on the structural bottom plate 12 after the structural bottom plate 12 reaches a certain strength, and then the middle plate suspension system 6 on the structural middle plate 11, the middle plate suspension fixing system 8 below the structural middle plate 11 and the middle plate formwork system 7 are dismantled after the structural side walls 13 and the structural columns 14 below the structural middle plate 11 reach a certain strength; and then, constructing a structure side wall 13 and a structure column 14 on the structure middle plate 11, and removing the top plate suspension system 3 on the structure top plate 10, the top plate template system 4 below the structure top plate and the top plate suspension fixing system 5 after the structure side wall 13 and the structure column 14 below the structure top plate 10 reach certain strength.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A reverse construction method of an underground structure is characterized by comprising the following steps:
1) constructing a building enclosure, then excavating a foundation pit to the position of a structural top plate, constructing a structural top plate, arranging a top plate suspension fixing system below the structural top plate, reserving a top plate suspension system on the structural top plate, and connecting the top plate suspension system with the top plate suspension fixing system;
2) erecting a vertical bearing system above the foundation pit, and connecting the top plate suspension system with the vertical bearing system;
3) continuously excavating the earth below the top plate of the structure to the position of the middle plate of the structure, constructing the middle plate of the structure, arranging a middle plate suspension fixing system below the middle plate of the structure, reserving a middle plate suspension system on the middle plate of the structure, and connecting the middle plate suspension system with the middle plate suspension fixing system;
4) connecting a middle plate suspension system on a middle plate of the structure with a top plate suspension system on a top plate of the structure;
5) continuously excavating the earth below the structural middle plate to the position of the structural bottom plate, constructing the structural bottom plate, and then constructing the structural side wall and the structural column between the structural middle plate and the structural bottom plate;
6) dismantling the middle plate suspension system and the middle plate suspension fixing system, and constructing a structure side wall and a structure column between the middle plate and the structure top plate of the structure;
7) and (4) removing the top plate suspension system and the top plate suspension fixing system.
2. The reverse construction method of an underground structure as claimed in claim 1, wherein: in the step 1), when constructing the enclosure structure, reserving a groove at a position corresponding to a structure top plate on the inner side of the enclosure structure; and when the structure top plate is constructed, two ends of the structure top plate are respectively embedded into the grooves of the enclosure structures at two sides.
3. The reverse construction method of an underground structure as claimed in claim 1, wherein: in the step 1), the structural roof is constructed in a prefabricating mode, and the concrete method comprises the following steps: prefabricating a structural top plate, and reserving a hole for mounting and fixing a top plate suspension system on the structural top plate; and then conveying the prefabricated structural top plate to a construction site, arranging a top plate suspension fixing system below the structural top plate, installing the top plate suspension system on the structural top plate, connecting the top plate suspension fixing system with the top plate suspension fixing system, and then placing the structural top plate at a designed position.
4. The reverse construction method of an underground structure as claimed in claim 1, wherein: in the step 1), a structural top plate is constructed in a cast-in-place mode, and the concrete method comprises the following steps: firstly, installing a top plate template system in a foundation pit, and fixing a top plate suspension fixing system on the top plate template system; then, binding structural roof steel bars on an upper template of the roof template system, and connecting the roof suspension system with the roof suspension fixing system; concrete is poured and one end of the roof suspension system is embedded therein.
5. The reverse construction method of an underground structure as claimed in claim 1, wherein: in the step 2), fixing the bearing system moving supports on two sides of the foundation pit respectively, erecting a vertical bearing system above the foundation pit, and fixing two ends of the vertical bearing system with the bearing system moving supports on two sides respectively; and 7) moving the vertical bearing system to a new reverse construction working surface through the bearing system moving support to carry out construction of the underground structure of the next construction section.
6. The reverse construction method of an underground structure as claimed in claim 1, wherein: in the step 3), the structural middle plate is constructed in a prefabricating mode, and the concrete method comprises the following steps: prefabricating a middle plate of a structure, and reserving a hole for installing and fixing a middle plate suspension system in the middle plate of the structure; and then transporting the prefabricated structural middle plate to a construction site, arranging a middle plate suspension fixing system below the structural middle plate, installing a middle plate suspension system on the structural middle plate, connecting the middle plate suspension fixing system with the middle plate suspension fixing system, and then placing the structural middle plate at a designed position.
7. The reverse construction method of an underground structure as claimed in claim 1, wherein: in the step 3), the structural middle plate is constructed in a cast-in-place mode, and the concrete method is as follows: firstly, a middle plate template system is installed in a foundation pit, and a middle plate suspension fixing system is fixed on the middle plate template system; then binding structural middle plate steel bars on an upper template of the middle plate template system, and connecting the middle plate suspension system with the middle plate suspension fixing system; concrete is poured, and one end of the middle plate suspension system is embedded in the middle plate suspension system.
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| CN202110064017.3A CN112922025B (en) | 2021-01-18 | 2021-01-18 | Reverse construction method of underground structure |
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| CN202110064017.3A CN112922025B (en) | 2021-01-18 | 2021-01-18 | Reverse construction method of underground structure |
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| CN105464215A (en) * | 2015-12-08 | 2016-04-06 | 上海市机械施工集团有限公司 | Reverse construction method construction method of hanging structure incapable of being provided with vertical temporary support |
| CN206448293U (en) * | 2016-12-28 | 2017-08-29 | 郑倩 | A kind of reverse construction ground prop structure |
| JP2018025046A (en) * | 2016-08-10 | 2018-02-15 | 鹿島建設株式会社 | Suspension device and suspension method |
| CN207727618U (en) * | 2017-12-28 | 2018-08-14 | 中建三局集团有限公司 | Basement contignation template system for pit top-down |
| CN109944250A (en) * | 2019-03-07 | 2019-06-28 | 上海建工集团股份有限公司 | The foundation pit of impermanent vertical support system is along inverse combining construction method |
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2021
- 2021-01-18 CN CN202110064017.3A patent/CN112922025B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464215A (en) * | 2015-12-08 | 2016-04-06 | 上海市机械施工集团有限公司 | Reverse construction method construction method of hanging structure incapable of being provided with vertical temporary support |
| JP2018025046A (en) * | 2016-08-10 | 2018-02-15 | 鹿島建設株式会社 | Suspension device and suspension method |
| CN206448293U (en) * | 2016-12-28 | 2017-08-29 | 郑倩 | A kind of reverse construction ground prop structure |
| CN207727618U (en) * | 2017-12-28 | 2018-08-14 | 中建三局集团有限公司 | Basement contignation template system for pit top-down |
| CN109944250A (en) * | 2019-03-07 | 2019-06-28 | 上海建工集团股份有限公司 | The foundation pit of impermanent vertical support system is along inverse combining construction method |
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| CN112922025B (en) | 2022-07-08 |
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