CN110725334B - Mid-partition wall of subway station group pit and construction method thereof - Google Patents
Mid-partition wall of subway station group pit and construction method thereof Download PDFInfo
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- CN110725334B CN110725334B CN201910988552.0A CN201910988552A CN110725334B CN 110725334 B CN110725334 B CN 110725334B CN 201910988552 A CN201910988552 A CN 201910988552A CN 110725334 B CN110725334 B CN 110725334B
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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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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Abstract
The invention discloses an intermediate wall of a subway station group pit and a construction method thereof, wherein the intermediate wall comprises a first-stage underground continuous wall and a second-stage underground continuous wall, the second-stage underground continuous wall is detachably arranged between the two first-stage underground continuous walls, the second-stage underground continuous wall comprises at least one prefabricated wall board, each prefabricated standard block is in a quadrilateral shape, a first female joint and a first male joint are sequentially arranged on one side surface of each prefabricated standard block from top to bottom, and the two prefabricated standard blocks are connected through the matching of the first female joint and the first male joint to form the prefabricated wall board. The construction method of the intermediate wall comprises the following steps: (1) manufacturing a prefabricated standard block; (2) performing substrate treatment on the bottom of the intermediate wall, and pouring a first-stage underground continuous wall in situ; (3) assembling prefabricated standard blocks from bottom to top in sequence; (4) and after the construction is finished, the prefabricated standard blocks are sequentially dismantled from top to bottom. The intermediate wall can be assembled and disassembled quickly on the construction site.
Description
Technical Field
The invention relates to the technical field of mid-partition wall construction, in particular to a mid-partition wall of a subway station group pit and a construction method thereof.
Background
In recent years, with the rapid development of national socioeconomic, people are concentrated in cities, the urbanization process is accelerated, ground traffic is rapidly increased, the problems of urban land shortage, traffic jam and the like are caused, the further healthy development of the cities is greatly restricted, and the national and regional economic development is hindered. The development of urban underground space, planning and construction of high-level and large-capacity traffic tunnels, particularly 'green traffic' -underground railways are fundamental ways for solving public transportation in large and medium cities, and have important significance for the continuous development of cities.
At present, China has achieved great achievement in the aspects of construction technology, management level and the like of urban underground railways. However, compared with developed cities such as hong kong and shenzhen, most of the rest cities in China need to learn further in the aspects of subway planning and management, and many problems need to be solved by research, such as how to develop subway + tourism mode, subway + business mode, prefabricated assembled structure research application, modern construction and management technology, and the like.
At present, in urban underground railways built and planned in China, new routes, particularly station and long-term subway planned routes for transfer, communication with other transportation hubs and commercial comprehensive development are gradually paid attention to, subway stations develop from single function to multiple functions as much as possible, and the scale of the subway stations is enlarged. The subway stations are generally positioned below urban busy areas or main roads, and in order to minimize the influence on ground traffic and construction safety and on the basis of the existing construction technology and experience, the subway station foundation pits are divided into two or more foundation pits, namely group pits, for sequential construction. After the main structure of the station is completed, the partition walls in the group pit part need to be opened so as to facilitate communication between underground spaces. According to the previous construction experience, the intermediate wall is constructed by adopting a reinforced concrete cast-in-place construction method, the crack resistance and the seepage resistance are poor, and the specific part is broken after being cut by manual or mechanical equipment in the later period. This kind of mid-board abolishes the mode, will seriously influence the overall stability of mid-board, is difficult to the cutting moreover, and is consuming time long, and repair work volume is big, and the difficulty of slagging tap, engineering cost is big.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide an intermediate wall of a subway station group pit and a construction method thereof, so that the defects that the whole structure of the intermediate wall is unstable, the workload is large, the time consumption is long and the cost is high due to the fact that the existing intermediate wall is cast in place and partially broken at the later stage are overcome.
In order to achieve the above purpose, the invention provides an intermediate wall of a subway station group pit, wherein the intermediate wall comprises a first-stage underground continuous wall and a second-stage underground continuous wall, the second-stage underground continuous wall is detachably installed between the two first-stage underground continuous walls, the second-stage underground continuous wall comprises at least one prefabricated wall plate, each prefabricated wall plate comprises two prefabricated standard blocks, each prefabricated standard block is in a quadrilateral shape, a first male connector is convexly arranged at the lower part of one side surface of each prefabricated standard block, a first female connector which is communicated with the top of the side surface and corresponds to the first male connector is concavely arranged at the upper part of one side surface of each prefabricated standard block, and the two prefabricated standard blocks are connected through the first female connector and the first male connector in a matching manner to form the prefabricated wall plate.
Preferably, among the above-mentioned technical scheme, every prefabricated standard block is right trapezoid shape, and every the side of the slope on prefabricated standard block right side is the inclined plane, just the inclined plane down sets gradually from last first concave joint with first convex joint, the lower extreme that first concave joint with the upper end intercommunication that first convex joint.
Preferably, in the above technical solution, a water stop plate is pasted on a right side surface of the first male tab of the inclined surface.
Preferably, in the above technical scheme, the inclined surface is provided with grooves at positions corresponding to the front side and the rear side of the first male joint, and each groove is provided with a water stop.
Preferably, in the above technical solution, both the cross section of the first male joint and the cross section of the first female joint are in an isosceles trapezoid shape.
Preferably, in the above technical solution, the remaining three side surfaces of each prefabricated standard block are provided with second male connectors.
Preferably, in the above technical scheme, a water stop plate is pasted on the outer side surface of the second male joint of each prefabricated standard block, and each groove is provided with a water stop strip, wherein the side surface of the second male joint is positioned at the corresponding positions of the front side and the rear side of the second male joint and is inwards concave.
Preferably, in the above technical solution, each of the prefabricated standard blocks is made of a steel fiber concrete material.
Preferably, in the above technical scheme, the bottom of the second-stage underground continuous wall is provided with at least one base block, the bottom of the base block is fixed on the ground, and the top of the base block is connected with the bottom of the second-stage underground continuous wall.
A construction method for an intermediate wall of a subway station group pit comprises the following steps:
(1) manufacturing the prefabricated standard block;
(2) performing substrate treatment on the bottom of the intermediate wall, and pouring the first-stage underground continuous wall in situ;
(3) sequentially assembling the prefabricated standard blocks from bottom to top so as to install the second-stage underground continuous wall;
(4) and after the construction of the main structure of the station is finished, sequentially removing the prefabricated standard blocks from top to bottom so as to remove the second-stage underground continuous wall.
Compared with the prior art, the invention has the following beneficial effects:
1. the prefabricated wallboard can be prefabricated in a factory, is high in manufacturing precision, can powerfully ensure the mounting precision, avoids hidden dangers brought by a cast-in-place intermediate wall, can realize quick and accurate assembly and disassembly on a construction site, avoids complex work of breaking an underground continuous wall and eliminates adverse effects on peripheral parts and structures, is convenient to transport and disassemble, improves the stability of the intermediate wall structure, can greatly accelerate the construction progress of the intermediate wall, shortens the construction period, reduces the cost, can be reused, and can meet the requirements of safety, reliability, cost reduction and environmental protection.
2. According to the invention, each prefabricated standard block is in a right trapezoid shape, the inclined side surface of each prefabricated standard block is an inclined surface, the inclined surface is sequentially provided with a first female joint and a first male joint from top to bottom, the lower end of the first female joint is communicated with the upper end of the first male joint, and the prefabricated standard blocks move downwards along the inclined surface through self weight, so that the joint sealing is facilitated, the integral performance is ensured, and the component dismantling is facilitated.
3. The prefabricated standard blocks and the first-stage underground continuous wall can be connected in a tongue-and-groove mode, so that the overall mechanical performance of the intermediate wall can be enhanced, immediate bearing can be achieved, and stratum deformation is reduced.
Drawings
Fig. 1 is a schematic three-dimensional structure of a prefabricated standard block according to the present invention.
Fig. 2 is a front view of a prefabricated standard block according to the present invention.
Fig. 3 is a schematic view of the construction of a first male connection end of a prefabricated standard block according to the present invention.
Fig. 4 is a schematic view of the construction of a first female joint of a prefabricated standard block according to the present invention.
Fig. 5 is an enlarged schematic view of section a of fig. 3 according to the present invention.
Fig. 6 is a schematic view of an installation structure of a prefabricated partition wall panel according to the present invention.
Fig. 7 is a top view schematic of fig. 6 in accordance with the present invention.
Fig. 8 is a schematic view of an installation structure of two prefabricated partition boards according to the present invention.
Fig. 9 is a top view schematic of fig. 8 in accordance with the present invention.
Description of the main reference numerals:
1-prefabricated standard block, 2-second convex joint, 3-hoisting hole, 4-first concave joint, 5-first convex joint, 6-water stop plate, 7-groove, 8-water stop strip, 9-base block, 10-second concave joint, 11-first-stage underground continuous wall and 12-I-steel.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 to 9 show a schematic structural view of an intermediate wall of a subway station group pit according to a preferred embodiment of the present invention, the intermediate wall includes a first-stage underground continuous wall 11 and a second-stage underground continuous wall, and referring to fig. 1 to 9, the second-stage underground continuous wall is detachably installed between two first-stage underground continuous walls 11, the second-stage underground continuous wall includes a plurality of prefabricated wall panels spliced with each other, each prefabricated wall panel includes two prefabricated standard blocks 1, each prefabricated standard block 1 is in a quadrilateral shape, a lower portion of one side of each prefabricated standard block 1 is convexly provided with a first male connector 5, an upper portion is concavely provided with a first female connector 4 communicating with a top of the side and corresponding to the first male connector 5, and the two prefabricated standard blocks 1 are connected by the cooperation of the first female connector 4 and the first male connector 5 to form the prefabricated wall panel. Wherein, the first-stage underground continuous wall 11 is cast in situ, when the two prefabricated standard blocks 1 are assembled into a prefabricated wallboard, one prefabricated standard block 1 is a first prefabricated standard block, the other prefabricated standard block 1 is a second prefabricated standard block, a first female joint 4 on the side surface of the first prefabricated standard block is placed upwards, a first female joint 4 on the side surface of the second prefabricated standard block is arranged downwards, and the second prefabricated standard block moves from top to bottom, so that the first female connector 4 on the side surface thereof is sleeved on the first male connector 5 of the first prefabricated standard block, and the first male connector 5 on the side surface is sleeved on the first female connector 4 of the first prefabricated standard block, the two prefabricated standard blocks 1 are connected through the male and female connectors on the side surface to form a prefabricated wall board, and at least one prefabricated wall board is arranged between the two first-stage underground continuous walls 11 to form a complete intermediate wall. The prefabricated wallboard can be prefabricated in a factory, is high in manufacturing precision, can powerfully ensure the mounting precision, avoids hidden dangers brought by a cast-in-place intermediate wall, can realize quick and accurate assembly and disassembly on a construction site, avoids complex work of breaking an underground continuous wall and eliminates adverse effects on peripheral parts or structures, is convenient to transport and disassemble, improves the stability of the intermediate wall structure, can greatly accelerate the construction progress of the intermediate wall, shortens the construction period, reduces the cost, can be reused, and can meet the requirements of safety, reliability, cost reduction and environmental protection.
Referring to fig. 1 to 5, preferably, each prefabricated standard block 1 is in a right trapezoid shape, the inclined side surface of the right side of each prefabricated standard block 1 is an inclined surface, the inclined surface is provided with a first female joint 4 and a first male joint 5 from top to bottom in sequence, and the lower end of the first female joint 4 is communicated with the upper end of the first male joint 5, so as to improve the connection performance between the two prefabricated standard blocks 1. Further preferably, a water stop plate 6 is pasted on the right side face of the first convex joint 5 of each inclined face, each inclined face is provided with a groove 7 which is inwards concave at the corresponding positions of the front side and the rear side of the first convex joint 5, the length direction of each groove 7 is parallel to the length direction of the first convex joint 5, a water stop strip 8 is arranged in each groove 7, and each water stop strip 8 and each water stop plate 6 are made of a water-swelling sealing material so as to play roles of sealing joints and buffering and prevent water seepage.
Referring to fig. 1 to 5, the cross section of the first male connector 5 and the cross section of the first female connector 4 of each prefabricated standard block 1 are preferably in the shape of an isosceles trapezoid to improve the connection performance of the prefabricated standard block 1. Each prefabricated standard block 1 is made of steel fiber concrete material, and the mixing amount of the steel fibers is 30-40 kg/m3To improve the strength of the prefabricated standard block 1.
Referring to fig. 1 to 5, preferably, the second-stage underground continuous wall is provided at the bottom with at least one base block 9, the base block 9 is fixed at the bottom on the ground, the top is connected with the bottom of the second-stage underground continuous wall to support and stabilize the prefabricated wall panel, the base block 9 is used as a permanent enclosure after being installed, the bottom is flush with the bottom of the first-stage underground continuous wall 11, and the height is determined according to the bottom elevation of the prefabricated intermediate wall. Further preferably, the length of the base block 9 is equal to the sum of the length of the upper side and the length of the lower side of the prefabricated standard block 1.
Referring to fig. 1 to 9, bolt connection, embedded iron connection, i-steel connection or tongue-and-groove connection may be employed between the prefabricated wall panels, between the base blocks 9, between the prefabricated wall panels and the base blocks 9, and between the prefabricated wall panels and the first-stage underground continuous wall 11. Preferably, each prefabricated standard block 1 is provided with second male connectors 2 on the remaining three sides, that is, each prefabricated wall panel is provided with second male connectors 2 on four sides, the top of the base block 9 is concavely provided with second female connectors 10 in fit connection with the second male connectors 2, the left side and the right side of the base block 9 are convexly provided with second male connectors 2 in fit connection with the second female connectors 10, each first-stage underground continuous wall 11 is concavely provided with second female connectors 10 in fit connection with the second male connectors 2 at positions connected with the prefabricated wall panels and the base block 9, the length directions of the second female connectors 10 are distributed along the up-down direction, and the top of each second female connector 10 penetrates through the top of the corresponding first-stage underground continuous wall 11, so as to facilitate the installation of the prefabricated wall panels and the base block 9, that is, that the prefabricated wall panels and the base block 9, the base block 9 and the first-stage underground continuous wall 11, and the prefabricated wall and the first-stage underground continuous wall 11 are all in fit connection by tongue-and-groove joints A mode of connection; the base blocks 9 and the partition boards are connected through I-shaped steel 12. Further preferably, a water stop plate 6 is adhered to the outer side surface of the second male connector 2 of each prefabricated standard block 1, grooves 7 are respectively and inwards concavely formed in the positions, corresponding to the front side and the rear side of the second male connector 2, of each side surface provided with the second male connector 2, and a water stop strip 8 is arranged in each groove 7.
Referring to fig. 1 and 2, preferably, each prefabricated standard block 1 is provided at upper and lower ends thereof with lifting holes 3 to facilitate lifting of the prefabricated standard block 1. Further preferably, the hoisting holes 3 are arranged on the second male connectors 2, two hoisting holes 3 are formed in each second male connector 2 of each prefabricated standard block 1, and the two hoisting holes 3 of each second male connector 2 are respectively located at one quarter and three quarters of the length of the corresponding second male connector 2. Further preferably, a plastic pipe is embedded in each hoisting hole 3, and the outer wall of the plastic pipe is provided with external threads so as to enhance the adhesion between the plastic pipe and the prefabricated standard block 1.
Referring to fig. 1 to 9, a construction method for an intermediate wall of a subway station group pit, comprising the steps of:
(1) manufacturing a prefabricated standard block 1;
(2) performing substrate treatment on the bottom of the intermediate wall, and pouring a first-stage underground continuous wall 11 in situ;
(3) sequentially assembling the prefabricated standard blocks 1 from bottom to top so as to install the second-stage underground continuous wall;
(4) after the construction of the main structure of the station is completed, the prefabricated standard blocks 1 are sequentially dismantled from top to bottom, so that the second-stage underground diaphragm wall is dismantled, and adjacent foundation pits are communicated with each other.
Referring to fig. 1 to 5, preferably, in step (1), when the prefabricated standard block 1 is manufactured, the prefabricated standard block 1 is in a right trapezoid shape, the inclined surface of the prefabricated standard block 1 is concavely provided with a first concave joint 4 and a first convex joint 5, the other three side surfaces are convexly provided with second convex joints 2, namely the right side surface is concavely provided with the first concave joint 4 and the first convex joint 5, the left side surface, the upper side surface and the lower side surface are convexly provided with the second convex joints 2, and all the convex joints and the concave joints are integrally formed with the prefabricated standard block 1, so that the manufacturing is simple and convenient.
Referring to fig. 1 to 5, preferably, in step (1), when the prefabricated standard blocks 1 are manufactured, a hoisting hole 3 is formed in one quarter and three quarters of the length of the second male connector 2 at the upper end of each prefabricated standard block 1, a hoisting hole 3 is formed in one quarter and three quarters of the length of the second male connector 2 at the lower end of each prefabricated standard block 1, so that the prefabricated standard blocks 1 can be hoisted conveniently, and a plastic pipe is embedded in each hoisting hole 3 to improve the strength of the hoisting hole 3.
Referring to fig. 1 to 5, preferably, in step (1), when the prefabricated standard blocks 1 are manufactured, the inclined surface of each prefabricated standard block 1 is provided with grooves 7 inwardly at positions corresponding to the front and rear sides of the first male connector 5, and the side surface provided with the second male connector 2 is provided with grooves 7 inwardly at positions corresponding to the front and rear sides of the second male connector 2.
Referring to fig. 6 to 9, preferably, in step (2), a base treatment such as compaction, leveling and elevation control is performed, and the first-stage underground continuous wall 11 is cast in situ, a second female joint 10 matched with the second male joint 2 is concavely arranged on the side surface of each first-stage underground continuous wall 11 connected with the second-stage underground continuous wall, and a nylon chemical fabric is adhered in the second female joint 10 for preventing slurry at the joint from being hardened with the prefabricated standard block 1.
Referring to fig. 6 to 9, preferably, before step (3), an upper water stopping strip 8 is adhered in the groove 7 of each prefabricated standard block 1, and an upper water stopping plate 6 is adhered on the right side surface of the first male connector 5 and the outer side surface of the second male connector of each prefabricated standard block 1, so as to play a role in sealing seams and buffering to prevent water seepage; base block 9 is made according to design requirements, a second concave joint 10 corresponding to the second convex joint 2 of the prefabricated standard block 1 is concavely arranged on the top surface of the base block 9, and a second convex joint 2 connected with the second concave joint 10 in a matched mode is convexly arranged on the left side surface and the right side surface.
Referring to fig. 6 to 9, preferably, in step (3), the base block 9 is installed, the base block 9 is firstly paid off and positioned at the installation position, then the base block 9 is hoisted to the designated position and slowly lowered down, so that the second male connector 2 on the side surface of the base block is matched and connected with the second female connector 10 of the first-stage underground continuous wall 11, the bottom surface of the base block is fixed on the bottom surface, and after the base block 9 is installed, the upper prefabricated standard block 1 is installed. When the second-stage underground continuous wall comprises a prefabricated wall board, only two prefabricated standard blocks 1 need to be installed, a first prefabricated standard block 1 is hoisted, a second convex joint 2 on the lower side surface of the first prefabricated standard block 1 is mutually nested with a second concave joint 10 on the top surface of a lower base block 9 through the action of gravity, a second convex joint 2 on the side surface of the first prefabricated standard block is mutually nested with a second concave joint 10 on one first-stage underground continuous wall 11, then the second prefabricated standard block 1 is hoisted, the upper side surface of the second prefabricated standard block 1 is arranged downwards, a second convex joint 2 on the upper side surface of the second prefabricated standard block is mutually nested with a second concave joint 10 on the top surface of a lower base block 9 through the action of gravity, a second convex joint 2 on the side surface of the second prefabricated standard block is mutually nested with a second concave joint 10 on the other first-stage underground continuous wall 11, and a first concave joint 4 and a first convex joint 5 on the inclined surface of the first prefabricated standard block 1 are mutually nested with a first convex joint 5 and a first concave joint 5 on the inclined surface of the first prefabricated standard block 1 through the action of gravity The heads 4 are respectively nested with each other, and the joints of the second female joint 10 of the first-stage underground continuous wall 11 and the second male joint 2 of the prefabricated standard block 1 are sealed by mud to form a second-stage underground continuous wall; when the second-stage underground continuous wall comprises two or more prefabricated wall panels, I-shaped steel 12 is adopted for connection between the prefabricated wall panels and between the base blocks 9.
The prefabricated wallboard and the base block 9 can be prefabricated in a factory, the manufacturing precision is high, the installation precision can be guaranteed powerfully, hidden dangers caused by a cast-in-place intermediate wall are avoided, the weight of components is general, quick and accurate assembling and disassembling of an engineering site are realized, tedious work of breaking an underground continuous wall is avoided, adverse effects on peripheral parts or structures are eliminated, the transportation and the disassembling are convenient, the stability of the intermediate wall structure is improved, the construction progress of the intermediate wall can be greatly accelerated, the construction period is shortened, the cost is reduced, the prefabricated wallboard can be reused, and the requirements of safety, reliability, cost reduction and environmental protection are met.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. The utility model provides an intermediate wall of subway station crowd hole, its characterized in that, the intermediate wall includes first phase underground continuous wall and second phase underground continuous wall, second phase underground continuous wall with can dismantle the mode install in two between the first phase underground continuous wall, second phase underground continuous wall includes at least one prefabricated wallboard, every prefabricated wallboard includes two prefabricated standard blocks, every prefabricated standard block is right trapezoid shape, and every the side of the slope on prefabricated standard block right side is the inclined plane, and every the inclined plane of prefabricated standard block down has set gradually first female joint and first male joint from last, first male joint with first female joint can the connection of mutually supporting, just the upper end intercommunication of first female joint the top on inclined plane, the lower extreme of first female joint with the upper end intercommunication of first male joint, a water stop plate is adhered to the right side surface of the first convex joint of the inclined surface, grooves are respectively inwards concavely formed in the positions, corresponding to the front side and the rear side of the first convex joint, of the inclined surface, and a water stop strip is arranged in each groove; the two prefabricated standard blocks are connected through the matching of the first female connector and the first male connector to form the prefabricated wall panel; the other three side surfaces of each prefabricated standard block are provided with second convex joints; the bottom of the second-stage underground continuous wall is provided with at least one base block, the bottom of the base block is fixed on the ground, and the top of the base block is connected with the bottom of the second-stage underground continuous wall; the top of the base block is concavely provided with a second concave joint which is matched and connected with the second convex joint; the position of each first-stage underground continuous wall, which is connected with the prefabricated wall board, is concavely provided with a second concave joint which is matched and connected with the second convex joint; every paste on the lateral surface of the second male joint of prefabricated standard block and have the sealing plate, and every is provided with the side of second male joint is located the position that the front and back both sides of second male joint correspond inwards concave respectively and is equipped with the recess, every be provided with the sealing strip in the recess.
2. The mid-board of a subway station group pit as claimed in claim 1, wherein said first male joint and said first female joint are each in the shape of an isosceles trapezoid in cross section.
3. The mid-wall of a subway station group pit as claimed in claim 1, wherein each of said prefabricated standard blocks is made of steel fiber concrete material.
4. A construction method of an intermediate wall for a subway station group pit as claimed in claim 1, comprising the steps of:
(1) manufacturing the prefabricated standard block;
(2) performing substrate treatment on the bottom of the intermediate wall, and pouring the first-stage underground continuous wall in situ;
(3) sequentially assembling the prefabricated standard blocks from bottom to top so as to install the second-stage underground continuous wall;
(4) and after the construction of the main structure of the station is finished, sequentially removing the prefabricated standard blocks from top to bottom so as to remove the second-stage underground continuous wall.
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| CN201910988552.0A CN110725334B (en) | 2019-10-17 | 2019-10-17 | Mid-partition wall of subway station group pit and construction method thereof |
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| CN113026812B (en) * | 2021-03-18 | 2024-02-06 | 中铁第四勘察设计院集团有限公司 | Subway station capable of being built together with property development |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09317398A (en) * | 1996-05-28 | 1997-12-09 | Kumagai Gumi Co Ltd | Segment for underground continuous wall |
| CN2295787Y (en) * | 1997-06-06 | 1998-10-28 | 中国第二十冶金建设公司第三建筑工程公司 | Tenon type joint of steel bar concrete for underground continuous wall |
| CN103806440B (en) * | 2014-03-05 | 2016-05-25 | 中国建筑股份有限公司 | One can be assembled and be inserted self-clamping type precast hollow diaphram wall and construction method thereof |
| CN105887806B (en) * | 2016-06-13 | 2018-08-24 | 上海强劲地基工程股份有限公司 | Assembled underground continuous wall and its construction method |
| CN206753614U (en) * | 2017-05-24 | 2017-12-15 | 上海市隧道工程轨道交通设计研究院 | Tunnel precast concrete section of jurisdiction with assembled snap joint |
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