Box culvert foundation pit supporting structure
By adopting stable connection components in the box culvert foundation pit support structure, the problem of poor stability at the connection between the prefabricated box culvert and the foundation pit is solved, and better adaptability and support effect are achieved.
Patent Information
- Application Number
- CN202420644822.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-30
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-30
AI Technical Summary
The existing box culvert foundation pit support structure has poor stability at the connection between the prefabricated box culvert and the foundation pit, resulting in poor support effect.
A box culvert foundation pit support structure is designed, adopting stable connection components, including support plates, connecting rods, upright plates, elastic resistance components and limiting components. Through the combination of these components, the spacing between the support plates and the prefabricated box culvert body is adjusted, and the support effect is enhanced through the elastic resistance components.
It effectively reduces the gap between the prefabricated box culvert and the foundation pit, improves the stability and support effect at the connection between the prefabricated box culvert and the foundation pit, and at the same time enhances the splicing stability of the main bodies of the two adjacent prefabricated box culverts.
Smart Images
Figure CN222575499U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of box culvert foundation pit support, and specifically to a box culvert foundation pit support structure. Background Art
[0002] Box culvert refers to a tunnel constructed with reinforced concrete box-shaped pipe sections. Box culverts are composed of one or more square or, generally made of or. With the continuous advancement of civil engineering construction technology, foundation pit support structure is an important part of ensuring the safety of foundation pit construction. In recent years, foundation pit support structure with prefabricated box culvert as support unit has gradually attracted attention.
[0003] This type of structure utilizes the standardized and modular characteristics of prefabricated box culverts to form a continuous support system through splicing and connection, thereby simplifying the construction process and improving construction efficiency. However, in actual applications, the width of the foundation pit and the size of the box culvert are difficult to match, which leads to the formation of a gap between the prefabricated box culvert and the foundation pit, thereby affecting the stability of the connection between the prefabricated box culvert and the foundation pit and reducing the support effect of the prefabricated box culvert. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present application provides a box culvert foundation pit support structure having advantages such as good connection stability, thereby solving the problem of poor connection stability.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a box culvert foundation pit support structure, comprising a prefabricated box culvert body, two connection blocks are fixed to the top of the right side of the prefabricated box culvert body, a plurality of plugs are fixed to the front and rear ends of the lower end of the prefabricated box culvert body for strengthening the stability of the prefabricated box culvert body when placed, and a stable connection assembly is provided at the front and rear ends of the prefabricated box culvert body;
[0006] The stable connection component includes two support plates, two cross blocks, two connecting rods fixedly installed on the opposite ends of the front and rear support plates, a vertical plate fixedly installed on the opposite sides of the upper and lower connecting rods, an elastic resistance component fixedly installed in the inner cavities of the two cross blocks, and a limiting component fixedly installed on the tops of the two support plates.
[0007] By adopting the above technical scheme, the phenomenon of gap between the prefabricated box culvert and the foundation pit can be reduced, so as to enhance the adaptability between the prefabricated box culvert and the box culvert foundation pit, thereby improving the stability of the connection between the prefabricated box culvert body and the foundation pit, and improving its support effect, and at the same time, it can also enhance the stability when two adjacent prefabricated box culvert bodies are spliced.
[0008] Furthermore, through holes are provided at both the front and rear ends of the prefabricated box culvert body, and the connecting rod is slidably connected to the inner side of the through hole.
[0009] By adopting the above technical solution, the connecting rod can be moved into or out of the interior of the prefabricated box culvert body, so that the distance between the supporting plate and the prefabricated box culvert body can be adjusted.
[0010] Furthermore, the front and rear two transverse blocks are respectively fixed to the front and rear walls of the inner cavity of the prefabricated box culvert body, and sliding holes are provided at the upper and lower ends of the transverse blocks, and the vertical plates are slidably connected to the inner sides of the sliding holes.
[0011] By adopting the above technical solution, the vertical plate can pass through the interior of the horizontal block so that it can be connected to the upper and lower connecting rods. At the same time, the vertical plate can move inside the horizontal block, so that the two connecting rods in the same group can drive the supporting plate to move.
[0012] Furthermore, the elastic resistance assembly includes two abutment plates, two groups of slide grooves, two cross bars fixedly installed on opposite sides of the front and rear abutment plates, abutment plates fixedly installed on opposite ends of the front and rear groups of cross bars, and support blocks fixedly installed on the left and right ends of the abutment plates, and the outer surface of the cross bar is sleeved with a spring.
[0013] The above technical solution can play an elastic resetting role on the two supporting plates, so that the two supporting plates can fit tightly against the inner wall of the foundation pit, which can effectively enhance the supporting effect of the foundation pit.
[0014] Furthermore, two circular holes are provided on opposite sides of the front and rear horizontal blocks, and the horizontal rod is slidably connected to the inner sides of the circular holes.
[0015] By adopting the above technical solution, the cross bar can be moved into or out of the inner side of the cross block through the circular hole, so as to pull the abutment plate to compress the spring.
[0016] Furthermore, the left and right slide grooves are respectively opened on the front and rear walls of the inner cavity of the horizontal block, and the support block is slidably connected to the inner side of the slide groove.
[0017] By adopting the above technical solution, the abutment plate can stably move in the inner cavity of the horizontal block, so that the abutment plate can stably push the vertical plate to move.
[0018] Furthermore, the limiting assembly includes two first limiting blocks, two second limiting blocks, and a connecting plate fixedly installed on the top of the first limiting blocks and the second limiting blocks.
[0019] The above technical solution is adopted so that the two supporting plates can be restricted and fixed on the two side walls of the prefabricated box culvert body.
[0020] Furthermore, a limiting groove is provided on the top of the supporting plate, the first limiting block is inserted into the inner side of the limiting groove, limiting grooves are provided at the front and rear ends of the top of the prefabricated box culvert body, and the second limiting block is inserted into the inner side of the limiting groove.
[0021] The above technical solution is adopted so that the two supporting plates can abut against the front and rear walls of the prefabricated box culvert body.
[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0023] The box culvert foundation pit support structure can reduce the phenomenon of gap between the prefabricated box culvert and the foundation pit by providing a stable connection component, so as to enhance the adaptability between the prefabricated box culvert and the box culvert foundation pit, thereby improving the stability of the connection between the prefabricated box culvert body and the foundation pit, and improving its support effect, and also enhancing the stability when two adjacent prefabricated box culvert bodies are spliced. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the structure of this application;
[0025] Figure 2 This is a side structural diagram of the prefabricated box culvert body of this application;
[0026] Figure 3 This is a schematic diagram of the structure of the elastic resistance component of this application;
[0027] Figure 4 This is a schematic diagram of the structure of the limiting components of this application.
[0028] In the figure: 1. prefabricated box culvert body; 2. connecting block; 3. plug rod; 4. support plate; 41. connecting rod; 42. vertical plate; 43. cross block; 44. abutment plate; 45. cross bar; 46. abutment plate; 47. spring; 48. support block; 49. slide groove; 410. first limit block; 411. second limit block; 412. connecting plate. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0030] See also Figure 1-2 A box culvert foundation pit support structure in this embodiment includes a prefabricated box culvert main body 1. Two connecting blocks 2 are fixed to the top of the right side of the prefabricated box culvert main body 1. A plurality of plug rods 3 for enhancing the stability of the prefabricated box culvert main body 1 when placed are fixed to the front and rear ends of the lower end. A stable connection component is provided at the front and rear ends of the prefabricated box culvert main body 1.
[0031] Secondly, two connection grooves are provided at the left end of the top of the prefabricated box culvert body 1. The connection block 2 is T-shaped and inserted into the inner side of the connection groove so that two adjacent prefabricated box culvert bodies 1 can be tightly spliced and assembled together.
[0032] See also Figure 1-3 The stable connection component in this embodiment includes two support plates 4, two horizontal blocks 43, two connecting rods 41 fixedly installed on the opposite ends of the front and rear support plates 4, a vertical plate 42 fixedly installed on the opposite side of the upper and lower connecting rods 41, an elastic resistance component fixedly installed in the inner cavity of the two horizontal blocks 43 and a limiting component fixedly installed on the top of the two support plates 4.
[0033] Among them, through holes are opened at the front and rear ends of the prefabricated culvert body 1, and the connecting rod 41 is slidably connected to the inner side of the through hole, so that the connecting rod 41 can move in or out of the inner side of the prefabricated culvert body 1 through the through hole, thereby adjusting the distance between the front and rear support plates 4.
[0034] In addition, the front and rear cross blocks 43 are respectively fixed to the front and rear walls of the inner cavity of the prefabricated box culvert body 1, and the opposite sides of the front and rear cross blocks 43 are missing. Sliding holes are provided at the upper and lower ends of the cross block 43, and the vertical plate 42 is slidably connected to the inner side of the sliding hole. The vertical plate 42 can pass through the interior of the cross block 43 through the two sliding holes of the cross block 43, so that the upper and lower ends of the vertical plate 42 can be connected to the upper and lower connecting rods 41, and the vertical plate 42 can move on the inner side of the cross block 43.
[0035] See also Figure 3 The elastic resistance assembly in this embodiment includes two abutment plates 44, two groups of slide grooves 49, two cross bars 45 fixedly installed on opposite sides of the front and rear abutment plates 44, abutment plates 46 fixedly installed on opposite ends of the front and rear groups of cross bars 45, and support blocks 48 fixedly installed on the left and right ends of the abutment plates 44. The outer surface of the cross bar 45 is sleeved with a spring 47.
[0036] Secondly, two circular holes are provided on the opposite sides of the front and rear cross blocks 43, and the cross bar 45 is slidably connected to the inner side of the circular hole, so that the cross bar 45 can be moved into or out of the inner side of the cross block 43 through the circular hole. The cross bar 45 can be effectively prevented from falling off from the inner side of the circular hole by the abutment plate 44 and the abutment plate 46, and the abutment plate 44 abuts against the vertical plate 42.
[0037] In addition, the left and right slide grooves 49 are respectively opened on the front and rear walls of the inner cavity of the cross block 43, and the support block 48 is slidably connected to the inner side of the slide groove 49, so that the support block 48 can move stably on the inner side of the cross block 43. When the abutment plate 44 moves in the inner cavity of the cross block 43, the two support blocks 48 in the same group can ensure that the abutment plate 44 moves stably on the inner side of the cross block 43.
[0038] See also Figure 1and Figure 4 The limiting assembly in this embodiment includes two first limiting blocks 410 , two second limiting blocks 411 , and a connecting plate 412 fixedly installed on the top of the first limiting blocks 410 and the second limiting blocks 411 .
[0039] At the same time, a limiting groove is opened on the top of the support plate 4, and the first limiting block 410 is inserted into the inner side of the limiting groove. Limiting grooves are opened at the front and rear ends of the top of the prefabricated culvert main body 1, and the second limiting block 411 is inserted into the inner side of the limiting groove. When the connecting plate 412 drives the first limiting block 410 to be inserted into the limiting groove of the support plate 4, the second limiting block 411 can also be moved into the limiting groove of the prefabricated culvert main body 1, so that the two support plates 4 can abut against the front and rear walls of the prefabricated culvert main body 1.
[0040] The working principle of the above embodiment is:
[0041] When in use, when the prefabricated box culvert body 1 is hoisted into the foundation pit, the prefabricated box culvert body 1 can be firmly placed in the foundation pit through the two groups of plug rods 3 at the lower end. After the prefabricated box culvert body 1 is placed in the foundation pit, the staff drives the first limit block 410 and the second limit block 411 to move upward through the connecting plate 412, so that the first limit block 410 no longer restricts and fixes the supporting plate 4, so that the two springs 47 in the same group are no longer squeezed by pressure, so that the two springs 47 in the same group can push the abutment plate 44 to move, so that the two cross bars 45 in the same group can Gradually move into the inner side of the horizontal block 43, and the abutment plate 44 can push the vertical plate 42 to move while moving, so that the vertical plate 42 pushes the two connecting rods 41 in the same group to gradually move out of the inner side of the prefabricated box culvert body 1, that is, the distance between the support plate 4 and the prefabricated box culvert body 1 can be adjusted, so that the support plate 4 can be firmly abutted against the foundation pit wall, and the above steps are repeated, and the support plate 4 on the other side abuts against the other inner wall of the foundation pit, thereby enhancing the stability of the connection between the prefabricated box culvert body 1 and the inner wall of the foundation pit, so as to enhance the support effect of the prefabricated box culvert body 1.
Claims
1. A box culvert foundation pit support structure, comprising a prefabricated box culvert body (1), characterized in that: Two connection blocks (2) are fixed to the top of the right side of the prefabricated box culvert body (1), and a plurality of plugging rods (3) for enhancing the stability of the prefabricated box culvert body (1) are fixed to the front and rear ends of the lower end of the prefabricated box culvert body (1), and a stable connection assembly is provided at the front and rear ends of the prefabricated box culvert body (1); The stable connection assembly comprises two support plates (4), two transverse blocks (43), two connecting rods (41) fixedly mounted on opposite ends of the front and rear support plates (4), a vertical plate (42) fixedly mounted on opposite sides of the upper and lower connecting rods (41), an elastic resistance assembly fixedly mounted on the inner cavities of the two transverse blocks (43), and a limiting assembly fixedly mounted on the tops of the two support plates (4).
2. A box culvert foundation pit support structure according to claim 1, characterized in that: Through holes are provided at both the front and rear ends of the prefabricated box culvert body (1), and the connecting rod (41) is slidably connected to the inner side of the through hole.
3. A box culvert foundation pit support structure according to claim 1, characterized in that: The front and rear two transverse blocks (43) are respectively fixed to the front and rear walls of the inner cavity of the prefabricated box culvert body (1); the upper and lower ends of the transverse block (43) are provided with sliding holes, and the vertical plates (42) are slidably connected to the inner sides of the sliding holes.
4. A box culvert foundation pit support structure according to claim 1, characterized in that: The elastic resistance component comprises two abutment plates (44), two groups of slide grooves (49), two cross bars (45) fixedly mounted on opposite sides of the front and rear abutment plates (44), abutment plates (46) fixedly mounted on opposite ends of the front and rear groups of cross bars (45), and support blocks (48) fixedly mounted on left and right ends of the abutment plates (44), and a spring (47) is sleeved on the outer surface of the cross bar (45).
5. A box culvert foundation pit support structure according to claim 4, characterized in that: Two circular holes are provided on opposite sides of the front and rear transverse blocks (43), and the transverse rod (45) is slidably connected to the inner sides of the circular holes.
6. A box culvert foundation pit support structure according to claim 4, characterized in that: The left and right sliding grooves (49) are respectively formed on the front and rear walls of the inner cavity of the transverse block (43), and the support block (48) is slidably connected to the inner side of the sliding grooves (49).
7. A box culvert foundation pit support structure according to claim 1, characterized in that: The limiting assembly comprises two first limiting blocks (410), two second limiting blocks (411), and a connecting plate (412) fixedly mounted on the top of the first limiting blocks (410) and the second limiting blocks (411).
8. A box culvert foundation pit support structure according to claim 7, characterized in that: A limiting groove is provided on the top of the support plate (4), the first limiting block (410) is inserted into the inner side of the limiting groove, limiting grooves are provided at both the front and rear ends of the top of the prefabricated box culvert body (1), and the second limiting block (411) is inserted into the inner side of the limiting groove.