Underground diaphragm wall structure beneficial to chiseling and underground diaphragm wall system
By embedding the holed steel plate components in the underground continuous wall structure, creating a segmented chisel removal interface, the problem of low construction efficiency in the later chisel removal in the existing technology is solved, and efficient chisel removal and good enclosure are achieved Take into account both protection performance.
Patent Information
- Application Number
- CN202420257685.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-02-02
AI Technical Summary
The existing underground continuous wall structure is time-consuming and labor-intensive in the later stage, has low construction efficiency, and is easy to remove, and is difficult to ensure stress and waterproof performance.
An underground continuous wall structure including a ground-connected wall body and an embedded perforated steel plate assembly is designed. The perforated steel plate assembly includes the bottom, middle and top perforated steel plates. Through these steel plate components, the ground-connected wall body is pre-buried and created. The sectional chisel removal interface is convenient for later sectional chisel removal.
It improves the chisel removal efficiency, reduces construction time and labor intensity, and ensures the maintenance of the force and waterproof performance of the ground connecting wall before chisel removal, taking into account both chisel removal efficiency and enclosure performance.
Smart Images
Figure CN222435255U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to an underground continuous wall structure and an underground continuous wall system which are conducive to chiseling. Background Art
[0002] Underground continuous wall (hereinafter referred to as "ground continuous wall") is widely used in the retaining structure of deep foundation pit projects due to its advantages such as high strength, good anti-seepage performance, wide adaptability, mature construction technology and high reliability.
[0003] Usually, the main structure and auxiliary structures (such as wind shelters, entrances and exits) of subway stations are often constructed in phases, and the interfaces between the main and auxiliary retaining structures generally require a common retaining wall. When constructing the internal structure in the later stage, the retaining wall at the interface needs to be chiseled off.
[0004] When using underground continuous walls as the retaining structure of subway stations, due to the large thickness and high strength of the underground continuous walls of deep foundation pit projects, the later removal of the underground continuous walls at the interface between the main body and the auxiliary is a difficulty in construction; and the ground-connected walls in the prior art are usually a whole section of continuous walls, which is time-consuming and labor-intensive to remove, and the construction efficiency is low. If a ground-connected wall structure that is easy to remove is used, it will lead to the problem of being unable to guarantee the stress and waterproof performance during the enclosure period.
[0005] In view of this, it is necessary to propose an underground continuous wall structure and an underground continuous wall system that is easy to remove to solve or at least alleviate the above-mentioned defects. Utility Model Content
[0006] The main purpose of the utility model is to provide an underground continuous wall structure which is easy to chisel off, so as to solve the problem that the underground continuous wall structure in the prior art cannot take into account both easy chiseling off and ensuring stress bearing and waterproof performance.
[0007] To achieve the above-mentioned purpose, the utility model provides an underground continuous wall structure that is easy to remove, including a ground-connected wall body and a perforated steel plate assembly pre-buried in the ground-connected wall body, wherein the ground-connected wall body is located between the main structure and the auxiliary structure; wherein:
[0008] The perforated steel plate assembly includes a bottom perforated steel plate, two layers of middle perforated steel plates arranged vertically opposite to each other, and two layers of top perforated steel plates arranged vertically opposite to each other. The bottom perforated steel plate is arranged corresponding to the bottom plate of the main structure, the two layers of the middle perforated steel plates are respectively arranged flush with the upper and lower interfaces of the middle plate of the main structure, and the two layers of the top perforated steel plates are respectively arranged flush with the upper and lower interfaces of the top plate of the main structure.
[0009] Preferably, the bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate are all provided with a plurality of conduit holes for concrete pouring, and the plurality of conduit holes are arranged at intervals along the extension direction of the ground-connected wall body.
[0010] Preferably, the bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate are also provided with a plurality of structural hole units arranged at intervals along the extension direction of the ground-connected wall body, and each of the structural hole units includes a plurality of structural holes arranged in a plum blossom shape.
[0011] Preferably, the lengths of the bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate are consistent with the length of the ground-connected wall body.
[0012] Preferably, the number of the conduit holes is two, and the two conduit holes are arranged at intervals along the extension direction of the ground-connected wall body.
[0013] Preferably, each of the catheter holes is rectangular, and the size of the catheter hole is 1000 mm×350 mm.
[0014] Preferably, the diameter of the structural hole is 90 mm to 110 mm.
[0015] The present application also provides an underground continuous wall system, comprising a plurality of underground continuous wall structures as described above, wherein the plurality of underground continuous wall structures are sequentially spliced along the extension direction of the underground continuous wall body.
[0016] Preferably, it also includes an I-beam, which is connected between two adjacent underground continuous wall structures, and the bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate of the underground continuous wall structure are fixedly connected to the I-beam by welding.
[0017] Compared with the prior art, the utility model provides the following beneficial effects:
[0018] The utility model provides an underground continuous wall structure that is conducive to chiseling, including a ground-connected wall body and a perforated steel plate assembly embedded in the ground-connected wall body, the ground-connected wall body is located between the main structure and the auxiliary structure, the perforated steel plate assembly includes a bottom perforated steel plate, two layers of middle perforated steel plates arranged vertically opposite to each other, and two layers of top perforated steel plates arranged vertically opposite to each other, the bottom perforated steel plate is arranged corresponding to the bottom plate of the main structure, the two layers of middle perforated steel plates are respectively arranged flush with the upper and lower interfaces of the middle plate of the main structure, and the top perforated steel plates on both sides are respectively arranged flush with the upper and lower interfaces of the top plate of the main structure. In this way, the perforated steel plate assembly can be used to create segmented chiseling interfaces at the positions of the bottom plate, middle plate and top plate of the main structure of the ground-connected wall to be chiseled off, so as to facilitate the chiseling off according to the boundaries of the embedded steel plates in the later stage, avoiding the need to chisel off the entire ground-connected wall at one time. Compared with the overall chiseling off of the ground-connected wall, it is more time-saving and labor-saving, thereby speeding up the chiseling efficiency, and at the same time ensuring that the entire ground-connected wall body retains the original stress-bearing and waterproof properties before chiseling off, which can take into account both the chiseling efficiency and the guarantee of the enclosure performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0020] Figure 1 A cross-sectional schematic diagram of an application scenario of the overall structure in one embodiment of the utility model;
[0021] Figure 2 It is a schematic plan view of a perforated steel plate assembly in one embodiment of the utility model;
[0022] Figure 3 A longitudinal cross-sectional schematic diagram of an application scenario of the overall structure in one embodiment of the utility model;
[0023] Figure 4 It is a plan view of an application scenario of the overall structure in one embodiment of the utility model.
[0024] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.
[0025] Description of Figure Numbers:
[0026] 10. Perforated steel plate assembly; 110. Bottom perforated steel plate; 120. Middle perforated steel plate; 130. Top perforated steel plate; 140. Conduit hole; 150. Structural hole; 20. Ground-connected wall body; 210. I-beam; 30. Main structure; 310. Bottom plate of the main structure; 320. Middle plate of the main structure; 330. Top plate of the main structure; 40. Auxiliary structure; 410. Bottom plate of the auxiliary structure; 420. Middle plate of the auxiliary structure; 430. Top plate of the auxiliary structure. DETAILED DESCRIPTION
[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0031] Please see attached Figure 1-4In one embodiment, the utility model provides an underground continuous wall structure that is easy to chisel out, including a ground-connected wall body 20 and a perforated steel plate assembly 10 pre-buried in the ground-connected wall body 20, wherein the ground-connected wall body 20 is located between the main structure 30 and the auxiliary structure 40. First of all, it should be noted that the ground-connected wall in the prior art is usually a continuous wall of a whole section, which is time-consuming and labor-intensive to chisel out, and has low construction efficiency. If a ground-connected wall structure that is easy to chisel out is used, it will lead to the problem that the force and waterproof performance cannot be guaranteed during the enclosure period. The present application solves the above-mentioned defects in the prior art by providing an underground continuous wall structure that is easy to chisel out. The details are as follows:
[0032] The perforated steel plate assembly 10 includes a bottom perforated steel plate 110, two layers of middle perforated steel plates 120 arranged vertically opposite to each other, and two layers of top perforated steel plates 130 arranged vertically opposite to each other. The bottom perforated steel plate 110 is arranged corresponding to the bottom plate 310 of the main structure, the two layers of the middle perforated steel plates 120 are respectively arranged flush with the upper and lower interfaces of the middle plate 320 of the main structure, and the two layers of the top perforated steel plates are respectively arranged flush with the upper and lower interfaces of the top plate 330 of the main structure.
[0033] Specifically, the underground continuous wall structure that is easy to be removed in the present application includes a ground-connected wall body 20 and a perforated steel plate assembly 10. The ground-connected wall body 20 is a protective structure for the main structure 30 and the auxiliary structure 40 (such as a wind pavilion, an entrance and exit) of the subway station during the phased construction, so as to play a role in preventing water seepage and soil collapse during the phased construction, so it is located between the main structure 30 and the auxiliary structure 40; usually, in order to ensure the stress and waterproof performance of the ground-connected wall body 20, the ground-connected wall body 20 is a whole wall body, which has the advantages of large thickness and high strength. Therefore, it is more troublesome to remove it later, so before constructing the ground-connected wall body 20, the perforated steel plate assembly 10 is added in advance. The steel plate assembly 10 is used to pre-embed the perforated steel plate assembly 10 in the ground-connected wall body 20, and the ground-connected wall body 20 is demarcated by the perforated steel plate assembly 10, so that while ensuring the stress and waterproof performance, it can be chiseled out in sections at a later time without chiseling out the entire wall at one time, thereby improving the chiseling efficiency; it can be understood that usually the main structure 30 and the auxiliary structure 40 have a bottom plate, a middle plate and a top plate, so the steel plates can be pre-embedded in the bottom plate 310, the middle plate and the top plate sides of the main structure respectively, which can facilitate the chiseling of the bottom plate, the middle plate and the top plate in turn at a later time, thereby achieving the purpose of "creating an interface for demarcation and chiseling".
[0034] The perforated steel plate assembly 10 includes a bottom perforated steel plate 110, two layers of middle perforated steel plates 120 arranged vertically opposite to each other, and two layers of top perforated steel plates 130 arranged vertically opposite to each other. The bottom perforated steel plate 110 is used to be pre-buried at the bottom of the ground-connected wall body 20 and is arranged close to the bottom plate 310 of the main structure. In this way, when the chiseling operation is performed later, the ground-connected wall part located at the bottom perforated steel plate 110 can be chiseled out first, and after chiseling, the bottom plate 310 of the main structure and the auxiliary structure can be placed on the bottom plate 310 of the main structure. The bottom plate 410 of the structure is cast to form a whole. After the strength of the cast bottom plate reaches 90% of the design strength, the next segment is chiseled out. Therefore, the middle perforated steel plate 120 is pre-buried in the middle of the ground-connected wall body 20, and two layers of the middle perforated steel plates 120 are respectively arranged on the upper and lower sides of the middle plate 320 of the main structure. In this way, when the bottom plate 310 of the main structure and the bottom plate 410 of the auxiliary structure are cast to form a whole, According to the position of the two layers of the middle perforated steel plates 120, the ground-connected wall part located at the middle plate of the main structure 30 is chiseled out. After the chiseling out, the middle plate 320 of the main structure and the middle plate 420 of the auxiliary structure are cast to form a whole. Similarly, after the strength of the cast bottom plate part reaches 90% of the design strength, the next segment is chiseled out. Therefore, the top perforated steel plate 130 is pre-buried in the upper part of the ground-connected wall body 20, and the two layers of the top perforated steel plates 130 are respectively set at the On both sides of the upper and lower surfaces of the top plate 330 of the main structure, when the middle plate 320 of the main structure and the middle plate 420 of the auxiliary structure are cast to form a whole in the later stage of chiseling, the ground-connected wall part located at the top plate of the main structure 30 can be chiseled out according to the positions of the two layers of the top perforated steel plates 130. After chiseling, the top plate 330 of the main structure and the top plate 430 of the auxiliary structure are cast to form a whole. After the structural strength reaches the requirement, the chiseling operation of a ground-connected wall is completed.
[0035] It is worth mentioning that the bottom perforated steel plate 110 , the middle perforated steel plate 120 , and the top perforated steel plate 130 are consistent in size and structure, and the difference lies in the different embedded positions to create different chiseling interfaces.
[0036] As a preferred embodiment of the present invention, the two layers of the middle perforated steel plates 120 are respectively arranged flush with the upper and lower surfaces of the middle plate 320 of the main structure; the two layers of the top perforated steel plates 130 are respectively arranged flush with the upper and lower surfaces of the top plate 330 of the main structure.
[0037] It should be noted that the two layers of the middle perforated steel plates 120 are respectively arranged flush with the upper and lower surfaces of the middle plate 320 of the main structure, so that the middle perforated steel plates 120 can better reflect the upper and lower interface positions of the middle plate 320 of the main structure, so that the chiseling operations can be carried out more accurately and targetedly in the later chiseling operations, thereby improving the chiseling efficiency; similarly, the two layers of the top perforated steel plates 130 are respectively arranged flush with the upper and lower surfaces of the top plate 330 of the main structure, which has the same effect, so that the boundary and segmented chiseling effects are better.
[0038] As a preferred embodiment of the present utility model, a plurality of conduit holes 140 for concrete pouring are provided on the bottom perforated steel plate 110 , the middle perforated steel plate 120 and the top perforated steel plate 130 , and the plurality of conduit holes 140 are arranged at intervals along the extension direction of the ground-connected wall body 20 .
[0039] It should be noted that since the bottom perforated steel plate 110, the middle perforated steel plate 120 and the top perforated steel plate 130 are all embedded parts, in order to facilitate the concrete pouring construction of the ground-connected wall without affecting it, holes need to be opened in the steel plates, and the conduit hole 140 is used for concrete pouring to meet the conduit requirements of the ground-connected wall when pouring concrete.
[0040] As a preferred embodiment of the present utility model, the bottom perforated steel plate 110, the middle perforated steel plate 120 and the top perforated steel plate 130 are also provided with a plurality of structural hole 150 units arranged at intervals along the extension direction of the ground-connected wall body 20, and each of the structural hole 150 units includes a plurality of structural holes 150 arranged in a plum blossom shape.
[0041] It is worth noting that the construction hole 150 unit is used to meet the requirements for the passage of coarse aggregate when pouring concrete, and the multiple construction holes 150 in each construction hole 150 unit are arranged in a plum blossom shape, so that the distribution of the construction holes 150 is more uniform, thereby ensuring that the coarse aggregate can also be evenly distributed when falling in, thereby ensuring the structural strength of the ground-connected wall body 20.
[0042] It is worth mentioning that in order to ensure the strength of the perforated steel plate, the porosity of each perforated steel plate can be 0.45-0.55. The porosity here means the ratio of the total opening area including the conduit hole 140 and the structural hole 150 to the area of each perforated steel plate. Preferably, the porosity of each perforated steel plate can be 0.5, and technical personnel in this field can set it according to the actual opening size.
[0043] As a preferred embodiment of the present invention, the lengths of the bottom perforated steel plate 110 , the middle perforated steel plate 120 , and the top perforated steel plate 130 are consistent with the length of the ground-connected wall body 20 .
[0044] It is worth noting that the perforated embedded steel plate is consistent with the length of the ground-connected wall body 20 to ensure that each ground-connected wall body 20 is clearly demarcated, so that each ground-connected wall body 20 can be chiseled out in sections; preferably, its length can be set to 6m.
[0045] Furthermore, the number of the conduit holes 140 is two, and the two conduit holes 140 are arranged at intervals along the extension direction of the ground-connected wall body 20 .
[0046] It should be noted that the more the conduit holes 140 in each perforated steel plate, the higher the efficiency of pouring concrete, but too many conduit holes will reduce the structural strength. Therefore, in a preferred embodiment, the number of the conduit holes 140 is two, and the two conduit holes 140 are spaced apart along the extension direction of the ground-connected wall body 20.
[0047] Furthermore, each of the catheter holes 140 is rectangular, and the size of the catheter hole 140 is 1000 mm×350 mm.
[0048] It should be understood that the catheter hole 140 is rectangular, and in order to meet the requirements of the maximum diameter of the catheter and the catheter movement space, the size of the catheter hole 140 can be set to 1000mm×350mm, and the specific value can be selected by technical personnel in this field according to the size specifications of each embedded steel plate.
[0049] Furthermore, the diameter of the structural hole 150 is 90 mm to 110 mm.
[0050] It should be noted that in order to meet the requirement of the maximum particle size of coarse aggregate for pouring concrete, the aperture of the structural hole 150 can be set to 90mm~110mm. In the present application as a preferred embodiment, the aperture of the structural hole 150 can be set to 100mm.
[0051] The present application also provides an underground continuous wall system, comprising a plurality of underground continuous wall structures as described above, wherein the plurality of underground continuous wall structures are sequentially spliced along the extension direction of the ground-connected wall body 20 .
[0052] It should be noted that, taking into account the convenience of early construction and later chiseling, the entire underground continuous wall system includes a plurality of underground continuous wall structures that are sequentially spliced along the extension direction of the ground-connected wall body 20, so that the entire ground-connected wall system is formed by splicing a plurality of ground-connected walls side by side to serve as a retaining structure between the main structure 30 and the auxiliary structure 40. When chiseling is performed in the later stage, the boundaries can be chiseled out in each ground-connected wall according to the boundaries of different perforated steel plates, and the main structures 30 and the auxiliary structures 40 on both sides can be cast into a whole in time after the boundaries are chiseled out, and the next stage of chiseling can be carried out after reaching the required strength. The entire process is accurately constructed and the chiseling operation is efficient.
[0053] Furthermore, it also includes an I-beam 210, which is connected between two adjacent underground continuous wall structures. The bottom perforated steel plate 110, the middle perforated steel plate 120 and the top perforated steel plate 130 of the underground continuous wall structure are fixedly connected to the I-beam 210 by welding.
[0054] It can be understood that the I-beam 210 is used to connect two adjacent underground continuous wall structures and ensure that the perforated steel plates in each underground continuous wall structure are stably connected. The welding method is convenient for construction and has a stable connection effect.
[0055] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An underground continuous wall structure that is easy to remove, characterized in that: It includes a ground-connected wall body and a perforated steel plate assembly pre-buried in the ground-connected wall body, wherein the ground-connected wall body is located between the main structure and the auxiliary structure; wherein, The perforated steel plate assembly includes a bottom perforated steel plate, two layers of middle perforated steel plates arranged vertically opposite to each other, and two layers of top perforated steel plates arranged vertically opposite to each other. The bottom perforated steel plate is arranged corresponding to the bottom plate of the main structure, the two layers of the middle perforated steel plates are respectively arranged flush with the upper and lower interfaces of the middle plate of the main structure, and the two layers of the top perforated steel plates are respectively arranged flush with the upper and lower interfaces of the top plate of the main structure.
2. The underground continuous wall structure that facilitates removal according to claim 1, characterized in that: The bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate are all provided with a plurality of conduit holes for concrete pouring, and the plurality of conduit holes are arranged at intervals along the extension direction of the ground-connected wall body.
3. The underground continuous wall structure that facilitates excavation according to claim 2, characterized in that: The bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate are also provided with a plurality of structural hole units arranged at intervals along the extension direction of the ground-connected wall body, and each of the structural hole units includes a plurality of structural holes arranged in a plum blossom shape.
4. The underground continuous wall structure that facilitates excavation according to claim 1, characterized in that: The lengths of the bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate are consistent with the length of the ground-connected wall body.
5. The underground continuous wall structure that facilitates removal according to claim 2, characterized in that: The number of the conduit holes is two, and the two conduit holes are arranged at intervals along the extension direction of the ground-connected wall body.
6. The underground continuous wall structure that facilitates removal according to claim 5, characterized in that: Each of the catheter holes is rectangular, and the size of the catheter hole is 1000 mm×350 mm.
7. The underground continuous wall structure that facilitates removal according to claim 3, characterized in that: The diameter of the structural hole is 90 mm to 110 mm.
8. An underground continuous wall system, characterized in that: It comprises a plurality of underground continuous wall structures as described in any one of claims 1 to 7, wherein the plurality of underground continuous wall structures are spliced in sequence along the extension direction of the ground-connected wall body.
9. The underground continuous wall system according to claim 8, characterized in that: It also includes an I-beam, which is connected between two adjacent underground continuous wall structures. The bottom perforated steel plate, the middle perforated steel plate and the top perforated steel plate of the underground continuous wall structure are fixedly connected to the I-beam by welding.