A top slab structure that facilitates sequential construction and connection of foundation pits
Patent Information
- Application Number
- CN202522110891.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-30
AI Technical Summary
[0004]本申请的目的是针对现有技术的缺点，采用快易收口网一连通壳体内部空间与围护墙连接孔，再注入混凝土的方式，设计了一种便于先后施工基坑连通的顶板结构，解决了拆卸围护墙时，围护墙与顶板容易分离，导致稳定性差的问题
1.本申请采用快易收口网一使得壳体内部空间与围护墙的连接孔之间连通，从而确保注入混凝土口，混凝土能够沿快易收口网一进入围护墙的连接孔内，故使连接筋与围护墙能够在混凝土凝固后呈一体式结构，达到增加围护墙的稳固性，防止围护墙在拆除时不稳定导致安全事故发生的效果。
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Figure CN224785393U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of construction safety technology, specifically a top slab structure that facilitates the connection of foundation pits during sequential construction. Background Technology
[0002] There is a retaining wall separating the excavation pits constructed earlier and those constructed later. The retaining wall is load-bearing. Therefore, when it is necessary to connect the excavation pits constructed earlier and later, the retaining wall needs to be removed. However, the overall structural stability cannot be guaranteed when the retaining wall is removed.
[0003] Since the connection between the top slab structure and the top of the retaining wall is usually achieved by inserting steel bars into the retaining wall and then injecting adhesive, it is difficult to guarantee the connection effect between the steel bars and the retaining wall through adhesive bonding. This makes it difficult to guarantee the overall stability of the structure when the retaining wall is demolished, resulting in poor construction safety and a high risk of accidents. Therefore, it is necessary to design a top slab structure that facilitates the connection between the foundation pits during sequential construction to solve the above problems. Utility Model Content
[0004] The purpose of this application is to address the shortcomings of existing technologies by designing a top slab structure that facilitates sequential construction of the foundation pit through a quick-closing mesh—connecting the internal space of the shell to the connection hole of the retaining wall, and then injecting concrete. This solves the problem of poor stability caused by the easy separation of the retaining wall and the top slab during the dismantling of the retaining wall.
[0005] To achieve the above objectives, the following technical solution is adopted: A top slab structure facilitating sequential construction and connection of foundation pits includes a shell, connecting ribs, supporting ribs, and a quick-closing mesh. Connecting ribs are fixedly connected through and to the inner wall of the shell. Multiple connecting ribs are arranged in two groups, with each group penetrating the inner wall on the left and right sides of the shell. Connecting ribs in the same group are arranged in a rectangular array in the front-back and vertical directions. Multiple supporting ribs are arranged on the outer side of each connecting rib, forming a circular array around the axis of the connecting rib. A quick-closing mesh is fixedly connected to the side of the supporting ribs furthest from the connecting rib, and the quick-closing mesh is annular. A bracket is fixedly connected to the inner wall of the shell, and a second quick-closing mesh is fixedly connected to the side of the bracket furthest from the center of the shell.
[0006] Preferably, the top of the shell is rectangular, and the bottom is a quadrangular prism with an isosceles trapezoidal left surface. The shell has a hollow structure, and the upper end of the inner cavity of the shell extends to the outside of the shell. A filling groove 1 is provided inside the quadrangular prism-shaped area at the bottom of the shell. A filling groove 2 is provided inside the shell above the filling groove 1 and on the side of the two quick-closing meshes 2 that are far apart from each other. A filling groove 3 is provided inside the shell between the two quick-closing meshes 2.
[0007] Preferably, a force-sharing component is provided inside the housing.
[0008] Preferably, the force-sharing component includes force-sharing reinforcing bars and supporting steel. The force-sharing reinforcing bars are composed of four segments, and the shapes of the four segments are inclined, horizontal, vertical, and horizontal, respectively. The segment of the force-sharing reinforcing bar away from the middle of the shell is inclined, and the outer surface of the inclined area of the force-sharing reinforcing bar contacts the inclined surface of the quadrangular prism area at the bottom of the shell. The end of the inclined area of the force-sharing reinforcing bar near the middle of the shell is connected to the horizontal area. The length of the horizontal area where the force-sharing reinforcing bar is connected to the inclined area is less than half the bottom inner width of the quadrangular prism area at the bottom of the shell. The lower part of the horizontal area where the force-sharing reinforcing bar is connected to the bottom inner surface of the shell, and the end of this area away from the inclined area is connected to the bottom end of the vertical area. The top of the vertical area of the force-sharing reinforcing bar is connected to another horizontal area, and this horizontal area is located on the side of the vertical area away from the middle of the shell. The number of supporting steels is set to multiple, and the multiple supporting steels are arranged on the side where the two horizontal areas of the force-sharing reinforcing bars are close to each other. The supporting steels are tied to the force-sharing reinforcing bars.
[0009] Preferably, a support assembly is provided inside the housing.
[0010] Preferably, the support assembly includes an upper support frame and a lower support frame. The bottom of the lower support frame contacts the bottom inner wall of the rectangular structural area of the shell. The lower support frame is tied to the inclined area of the force-bearing steel bar. The upper support frame is disposed at the upper part of the rectangular structural area of the shell. The upper support frame is tied to the inclined area of the force-bearing steel bar.
[0011] Preferably, the upper support frame is made of multiple transverse and longitudinal steel bars tied together, and the length of the transverse steel bars of the upper support frame is consistent with the inner length of the rectangular area of the shell.
[0012] Preferably, a water-blocking component is provided inside the housing.
[0013] Preferably, the water-stopping component includes a water-stopping steel plate and a water-stopping strip. The front and rear ends of the water-stopping steel plate are fixedly connected to the inner wall of the shell. The water-stopping steel plate penetrates the inner wall of the quick-closing mesh. The lower side of the water-stopping strip is fixedly connected to the inner wall of the shell.
[0014] Preferably, it also includes a stabilizing frame, and the number of stabilizing frames is set to multiple. The stabilizing frame located on the upper side of the water-stop steel plate is tied to the upper support frame, and the stabilizing frame located on the lower side of the water-stop steel plate is tied to the lower support frame. The stabilizing frame is U-shaped, and the side of the stabilizing frame near the middle of the shell is fixedly connected to the quick-closing mesh.
[0015] Compared with the prior art, the beneficial effects of this application are: 1. This application uses a quick-closing mesh to connect the internal space of the shell with the connection hole of the retaining wall, thereby ensuring that the concrete can enter the connection hole of the retaining wall along the quick-closing mesh. Therefore, the connecting bar and the retaining wall can form an integral structure after the concrete solidifies, thereby increasing the stability of the retaining wall and preventing the retaining wall from becoming unstable during demolition, which could lead to safety accidents.
[0016] 2. This application adopts the setting of force-sharing steel bars to ensure that when the left and right sides of the shell are subjected to force, the force can be transferred to the force-sharing steel bars, thereby transferring the pressure they receive from one direction to different directions through their inclined areas, thereby increasing the equipment's compressive strength and concealing the effect of increasing the stability of the enclosure wall. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure in this application; Figure 2 This is a cross-sectional view of the present application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the connecting bars, supporting bars, and quick-closing mesh in this application; Figure 5 This is a schematic diagram of the component installation before the enclosure wall is removed during the use of this application; Figure 6 This is a schematic diagram showing the connection of the structure after the retaining wall is removed during the use of this application.
[0018] The components are as follows: 1. Shell; 2. Connecting ribs; 3. Supporting ribs; 4. Quick-closing mesh I; 5. Force-distributing components; 6. Support components; 7. Bracket; 8. Water-blocking components; 9. Stabilizing frame; 10. Quick-closing mesh II; 11. Filling groove I; 12. Filling groove II; 13. Filling groove III; 51. Force-distributing reinforcing bars; 52. Supporting steel; 61. Upper support frame; 62. Lower support frame; 81. Water-stop steel plate; 82. Water-stop strip; 14. Enclosure wall; 15. Structural top slab constructed first; 16. Structural top slab constructed later; 17. Foundation pit support constructed later; 18. Structural slab constructed first; 19. Structural slab constructed later; 20. Ground; 21. Foundation pit constructed first; 22. Foundation pit constructed later. Detailed Implementation
[0019] Reference Figure 1 - Figure 6A top slab structure for easy sequential construction and connection of foundation pits includes a shell 1, connecting bars 2, supporting bars 3, and quick-closing mesh 4. Connecting bars 2 are fixedly connected through and to the inner wall of the shell 1. The connecting bars 2 are steel bars that connect to the internal openings of the retaining wall 14. Multiple connecting bars 2 are arranged in two groups, with each group penetrating the inner wall of the left and right sides of the shell 1 respectively. The connecting bars 2 in the same group form a rectangular array in the front-back and vertical directions. Multiple supporting bars 3 are provided on the outer side of each connecting bar 2. Support blocks are provided on the outer side of each connecting bar 2 to maintain distance between the supporting bars 3 and the connecting bars 2. Multiple support ribs 3 are arranged in a circular array around the axis of the connecting rib 2 by binding with iron wire. A quick-closing mesh 4 is fixedly connected to the side of the multiple support ribs 3 outside the same connecting rib 2 away from the connecting rib 2. The quick-closing mesh 4 is used to divide the space inside and outside it. The quick-closing mesh 4 is ring-shaped. The support ribs 3 are used to fix the quick-closing mesh 4. The quick-closing mesh 4, the connecting rib 2 and the support rib 3 all penetrate the side wall of the shell 1. A bracket 7 is fixedly connected to the inner wall of the shell 1. A quick-closing mesh 2 10 is fixedly connected to the side of the bracket 7 away from the middle of the shell 1. The bracket 7 is used to fix the quick-closing mesh 2 10.
[0020] In this embodiment, before the retaining wall 14 is removed, the side of the retaining wall 14 closest to the first-constructed excavation pit 21, near the lower outer wall of the first-constructed excavation pit 21, is connected to the first-constructed structural slab 18. The outer wall of the retaining wall 14 closest to the upper outer wall of the first-constructed excavation pit 21 is connected to the first-constructed structural top slab 15 via this application. The side of the retaining wall 14 closest to the second-constructed excavation pit 22, near the lower part of the second-constructed excavation pit 22, is connected to the second-constructed structural slab 19. One side of the upper part of the post-construction pit 22 is connected to the top slab 16 of the post-construction structure. The top of the side of the retaining wall 14 near the post-construction pit 22 is connected to the post-construction pit support 17. The retaining wall 14 is located below the ground 20. When installing this application, the workers first drill and clean the retaining wall 14. Then, the connecting bar 2, the supporting bar 3, and the quick-closing mesh 10 are inserted into the hole in the area outside the shell 1. Subsequently, the workers move towards the area between the two quick-closing mesh 10. Concrete is injected into the area, ensuring that the concrete can pass through the quick-closing mesh 10. Therefore, during the concrete injection process, the concrete not only occupies the internal space of the shell 1, but also flows outward along the quick-closing mesh 14. At the same time, because the concrete can pass through the quick-closing mesh 14, the concrete can also fill the gaps generated inside the shell 1 along the path of the quick-closing mesh 14, ensuring that the interior of the shell 1 is more compact. In addition, the concrete passing through the quick-closing mesh 14 can also enter the holes opened in the retaining wall 14. Therefore, when it fills the holes and solidifies, it can make the retaining wall 14 and the connecting bar 2 form an integral structure, thus ensuring the stability of the retaining wall 14. When the retaining wall 14 is removed, connecting the first construction pit 21 with the subsequent construction pit 22, since the middle part of the retaining wall 14 is removed, the part above the removed area is supported by the subsequent construction pit 17 on both sides and connected to the top plate 15 of the first construction structure and this application, thus ensuring the stability and safety of the structure.
[0021] As a preferred embodiment, the top of the shell 1 is rectangular, and the bottom is a quadrangular prism with an isosceles trapezoidal left surface. The shell 1 has a hollow structure, with the upper end of the inner cavity extending outside the shell 1. A filling groove 11 is provided inside the quadrangular prism area at the bottom of the shell 1. The filling groove 11 is used to inject pre-concrete. The shell 1 is located above the filling groove 11 and is located on the side away from each other of the two quick-closing meshes 10. The filling groove 12 is used to inject concrete after the overall frame of the equipment is built to make its structure stable. The concrete in the filling groove 11 and the filling groove 12 cannot pass through the quick-closing meshes 14 and 10. A filling groove 13 is provided inside the shell 1 between the two quick-closing meshes 10. The filling groove 13 is used to inject concrete after the connecting bar 2 is inserted into the hole of the retaining wall 14, and the concrete injected into the filling groove 13 can pass through the quick-closing meshes 14 and 10.
[0022] As a preferred embodiment, the interior of the housing 1 is provided with a force-sharing component 5, which is used to decompose the pressure generated on the housing 1 during the demolition of the enclosure wall 14, converting the horizontal force into a vertical force.
[0023] As a preferred embodiment, the force-sharing component 5 includes force-sharing steel bars 51 and supporting steel bars 52. The force-sharing steel bars 51 are composed of four segments, with shapes of inclined, horizontal, vertical, and horizontal respectively. One segment of the force-sharing steel bar 51, furthest from the middle of the shell 1, is inclined, and the outer surface of the inclined region of the force-sharing steel bar 51 contacts the inclined surface of the quadrangular prism region at the bottom of the shell 1. The end of the inclined region of the force-sharing steel bar 51 near the middle of the shell 1 connects to the horizontal region. The length of the horizontal region where the force-sharing steel bar 51 connects to the inclined region is less than half the inner width of the bottom of the quadrangular prism region at the bottom of the shell 1. The lower part of the horizontal region where the force-sharing steel bar 51 connects to the inclined region contacts the inner surface of the bottom of the shell 1, and the end of this region furthest from the inclined region connects to the bottom end of the vertical region. The vertical region of the force-sharing steel bar 51... The top of the domain is connected to another horizontal region, which is located on the side of the vertical region away from the middle of the shell 1. Multiple support steels 52 are set on the side where the two horizontal regions of the force-distributing steel bars 51 are close to each other. The support steels 52 are tied to the force-distributing steel bars 51. Through the shape of the force-distributing steel bars 51, it is ensured that when the left and right sides of the shell 1 are subjected to force, the force is most easily transmitted to the inclined area of the force-distributing steel bars 51. Since the position receiving the force is inclined, the force it receives can be decomposed into two directions, horizontal and vertical, thus achieving the force-distributing effect. At the same time, when it undergoes horizontal deformation, it will compress the horizontal and vertical regions. Due to the limited internal space of the shell 1, this part is difficult to undergo large deformation, thus achieving a stabilizing effect.
[0024] As a preferred embodiment, a support component 6 is provided inside the housing 1. The support component 6 is used to support the housing 1 internally and ensure its stability during use.
[0025] As a preferred embodiment, the support assembly 6 includes an upper support frame 61 and a lower support frame 62. The bottom of the lower support frame 62 contacts the bottom inner wall of the rectangular structural area of the shell 1. The lower support frame 62 is tied to the inclined area of the force-bearing steel bar 51. The upper support frame 61 is located at the upper part of the rectangular structural area of the shell 1 and is tied to the inclined area of the force-bearing steel bar 51. Both the upper support frame 61 and the lower support frame 62 are used to support the shell 1, thereby preventing the shell 1 from deforming after being subjected to force.
[0026] As a preferred method, the upper support frame 61 is made of multiple transverse and multiple longitudinal steel bars. The length of the transverse steel bars of the upper support frame 61 is consistent with the inner length of the rectangular area of the shell 1. By setting the same length, it is ensured that the top area of the shell 1 is not easily deformed due to transverse force.
[0027] As a preferred embodiment, a water-blocking component 8 is provided inside the housing 1. The water-blocking component 8 is used to ensure that the stability of the equipment is not easily affected by water vapor during use.
[0028] As a preferred embodiment, the water-stopping component 8 includes a water-stopping steel plate 81 and a water-stopping strip 82. The front and rear ends of the water-stopping steel plate 81 are fixedly connected to the inner wall of the housing 1. The water-stopping steel plate 81 penetrates the inner wall of the quick-closing mesh 10. The water-stopping steel plate 81 is used to adjust the water flow direction, making it difficult for water to pass through the quick-closing mesh 10 and enter the filling groove 12. The lower side of the water-stopping strip 82 is fixedly connected to the inner wall of the housing 1.
[0029] As a preferred embodiment, a stabilizing frame 9 is also included. The number of stabilizing frames 9 is set to be multiple. The stabilizing frame 9 on the upper side of the water-stop steel plate 81 is tied to the upper support frame 61, and the stabilizing frame 9 on the lower side of the water-stop steel plate 81 is tied to the lower support frame 62. The stabilizing frame 9 is U-shaped. The side of the stabilizing frame 9 near the middle of the shell 1 is fixedly connected to the quick-closing mesh 4. The stabilizing frame 9 is used to support the quick-closing mesh 4 and ensure that the quick-closing mesh 4 is not easily deformed during use.
Claims
1. A top slab structure that facilitates sequential construction and connection of foundation pits, characterized in that, The shell (1) includes a connecting rib (2), a supporting rib (3), and a quick-closing mesh (4). The inner wall of the shell (1) is penetrated and fixedly connected with the connecting rib (2). The number of connecting ribs (2) is set to multiple. The multiple connecting ribs (2) are set to two groups. The two groups of connecting ribs (2) penetrate the inner walls of the left and right sides of the shell (1) respectively. The connecting ribs (2) in the same group are arranged in a rectangular array in the front-back and up-down directions. Multiple supporting ribs (3) are provided on the outside of each connecting rib (2). The multiple supporting ribs (3) are arranged in a circular array around the axis of the connecting rib (2). The multiple supporting ribs (3) outside the same connecting rib (2) are fixedly connected to the quick-closing mesh (4) on the side away from the connecting rib (2). The quick-closing mesh (4) is annular. The inner wall of the shell (1) is fixedly connected with a bracket (7). The side of the bracket (7) away from the middle of the shell (1) is fixedly connected with a quick-closing mesh (2) (10).
2. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 1, characterized in that: The top of the shell (1) is rectangular, and the bottom is a quadrangular prism with an isosceles trapezoidal left surface. The shell (1) is a hollow structure. The upper end of the inner cavity of the shell (1) extends to the outside of the shell (1). A filling groove 1 (11) is provided inside the quadrangular prism area at the bottom of the shell (1). A filling groove 2 (12) is provided inside the shell (1) above the filling groove 1 (11) and on the side away from each other of the two quick-closing meshes 2 (10). A filling groove 3 (13) is provided inside the shell (1) between the two quick-closing meshes 2 (10).
3. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 1, characterized in that: The housing (1) is provided with a force-sharing component (5).
4. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 3, characterized in that: The force-sharing component (5) includes a force-sharing steel bar (51) and a supporting steel bar (52). The force-sharing steel bar (51) consists of four segments, and the shapes of the four segments are inclined, horizontal, vertical, and horizontal, respectively. The segment of the force-sharing steel bar (51) away from the middle of the shell (1) is inclined, and the outer surface of the inclined area of the force-sharing steel bar (51) is in contact with the inclined surface of the quadrangular prism area at the bottom of the shell (1). The end of the inclined area of the force-sharing steel bar (51) near the middle of the shell (1) is connected to the horizontal area. The length of the horizontal area where the force-sharing steel bar (51) is connected to the inclined area is shorter than the length of the quadrangular prism at the bottom of the shell (1). The bottom inner width of the shaped area is half of the horizontal area. The lower part of the horizontal area connected to the inclined area of the branch reinforcement (51) is in contact with the bottom inner surface of the shell (1), and the end of the area away from the inclined area is connected to the bottom end of the vertical area. The top of the vertical area of the branch reinforcement (51) is connected to another horizontal area, and the horizontal area is located on the side of the vertical area away from the middle of the shell (1). The number of the support steel (52) is set to multiple. Multiple support steel (52) are set on the side where the two horizontal areas of the branch reinforcement (51) are close to each other. The support steel (52) is tied to the branch reinforcement (51).
5. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 1, characterized in that: The housing (1) is provided with a support assembly (6).
6. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 5, characterized in that: The support assembly (6) includes an upper support frame (61) and a lower support frame (62). The bottom of the lower support frame (62) is in contact with the bottom inner wall of the rectangular structural area of the shell (1). The lower support frame (62) is tied to the inclined area of the force-bearing steel bar (51). The upper support frame (61) is set at the upper part of the rectangular structural area of the shell (1). The upper support frame (61) is tied to the inclined area of the force-bearing steel bar (51).
7. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 6, characterized in that: The upper support frame (61) is made of multiple transverse and longitudinal steel bars tied together, and the length of the transverse steel bars of the upper support frame (61) is consistent with the inner length of the rectangular area of the shell (1).
8. The top slab structure for facilitating sequential construction and connection of foundation pits according to claim 1, characterized in that: A water-blocking component (8) is provided inside the housing (1).
9. A top slab structure for facilitating sequential construction and connection of foundation pits according to claim 8, characterized in that: The water-blocking component (8) includes a water-stop steel plate (81) and a water-stop strip (82). The front and rear ends of the water-stop steel plate (81) are fixedly connected to the inner wall of the shell (1). The water-stop steel plate (81) penetrates the inner wall of the quick-closing mesh (10). The lower side of the water-stop strip (82) is fixedly connected to the inner wall of the shell (1).
10. A top slab structure for facilitating sequential construction and connection of foundation pits according to claim 9, characterized in that: It also includes a stabilizing frame (9), the number of which is set to multiple. The stabilizing frame (9) on the upper side of the water-stop steel plate (81) is tied to the upper support frame (61), and the stabilizing frame (9) on the lower side of the water-stop steel plate (81) is tied to the lower support frame (62). The stabilizing frame (9) is U-shaped, and the side of the stabilizing frame (9) near the middle of the shell (1) is fixedly connected to the quick-closing mesh (4).