Foundation pit support structure for engineering construction

Abstract

The utility model relates to an engineering construction foundation pit support structure, and belongs to the technical field of building construction. Comprising a left side pile column and a right side pile column which are located on the two sides of a foundation pit, a left side mounting frame is detachably mounted on the left side pile column, and a left side soil retaining plate and a left side outer baffle are detachably mounted at the inner end and the outer end of the left side mounting frame correspondingly; and a right side soil baffle and a right side outer baffle are detachably mounted at the inner end and the outer end of the right side mounting frame correspondingly. The foundation pit support structure has the advantages that the soil retaining plates and the outer baffles are arranged on the inner sides and the outer sides of the piles respectively, the soil retaining plates can solve the problem that according to an existing foundation pit support structure, the edge of a foundation pit is prone to collapsing, the outer baffles can prevent pedestrians from getting close to the foundation pit, and the safety coefficient of construction is improved; the mounting frame and the pile column are detachably connected, transportation and on-site assembly are facilitated, the soil retaining plate, the outer baffle and the mounting frame are detachably connected, and the assembly layout can be flexibly adjusted according to construction requirements.

Description

Technical Field

[0001] This utility model relates to a foundation pit retaining structure for engineering construction, belonging to the field of building construction technology. Background Technology

[0002] In the field of foundation pit support engineering, traditional concrete support systems have gradually revealed many shortcomings due to their inherent limitations. In contrast, steel structure support systems, with their unique engineering characteristics, are increasingly becoming the preferred solution for modern foundation pit support engineering.

[0003] A search revealed a utility model patent with patent number 202421157446.0, which discloses an internal and external support structure for a building foundation pit, belonging to the field of building foundation pit construction technology. Multiple sets of frame support mechanisms are spaced apart along the length of the first and second lumbar beams to provide support for them. Each frame support mechanism includes a first outer perimeter pile and a second outer perimeter pile, respectively located outside the first and second sheet piles. A top crossbeam connects the tops of the first and second outer perimeter piles. A vertical column A for fixing the first lumbar beam and a vertical column B for fixing the second lumbar beam are mounted on the top crossbeam. A lower support rod is provided between the vertical columns A and B.

[0004] While the aforementioned patents can achieve the function of foundation pit protection, current technology is not comprehensive and has the following drawbacks: 1. Lack of external isolation measures: Most retaining structures (such as sheet piles and cast-in-place piles) only focus on internal support and do not install external protective barriers, resulting in a high risk of pedestrians or machinery accidentally entering the dangerous area. 2. Insufficient reliability of the connection nodes of split components also affects the overall stability.

[0005] To solve one of the above problems, there is an urgent need for a construction foundation pit retaining structure. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to set up retaining plates and outer baffles on the inner and outer sides of the pile column respectively. The retaining plates can solve the problem that the existing foundation pit retaining structure is prone to collapse of the foundation pit edge, and the outer baffles can prevent pedestrians from approaching the foundation pit and improve the safety factor of construction. Therefore, a foundation pit retaining structure for engineering construction is provided.

[0007] The engineering construction foundation pit retaining structure of this utility model includes a left pile column and a right pile column located on both sides of the foundation pit. The left pile column is characterized in that: a left mounting frame is detachably installed on the left pile column, and a left retaining plate and a left outer baffle are detachably installed at the inner and outer ends of the left mounting frame, respectively; a right mounting frame is detachably installed on the right pile column, and a right retaining plate and a right outer baffle are detachably installed at the inner and outer ends of the right mounting frame, respectively.

[0008] The mounting frame and piles are detachably connected, facilitating transportation and on-site assembly. The detachable connection between the retaining plate, outer baffle, and mounting frame allows for flexible adjustment of component layout according to construction needs. During construction, the outer walls of the left and right retaining plates fit snugly against the inner wall of the pit, resolving the issue of existing pit retaining structures prone to edge collapse. Furthermore, by installing the left and right outer baffles on the left and right mounting brackets respectively, pedestrian access to the pit is prevented, improving construction safety. The modular design also allows for individual component replacement, reducing maintenance costs.

[0009] Preferably, the left-side mounting frame includes mating clamp units A and B, which are fixed to the outer side of the left-side pile column by connecting bolts A. I-beam connecting beams A and B are respectively installed on the outer walls of clamp units A and B. The other end of I-beam connecting beam A is connected to a left-side retaining plate via a first connector, and the other end of I-beam connecting beam B is connected to a left-side outer baffle via a second connector. The mounting frame and pile column are detachably connected, reducing the difficulty of on-site adjustment, facilitating transportation and on-site assembly, simplifying the installation process, and enabling quick disassembly and assembly via bolt connections, thus facilitating later maintenance or component replacement.

[0010] Preferably, the first connecting member includes a horizontal connecting plate A arranged along the length of the top side of the left retaining plate. The upper surface of the horizontal connecting plate A is fixedly connected to the lower flange of the I-beam connecting beam A by a second connecting bolt. A diagonal brace A is also welded to the upper surface of the horizontal connecting plate A. The other end of the diagonal brace A is fixedly connected to the web of the I-beam connecting beam A by a first connecting bolt. A reinforcing rib A is provided between the horizontal connecting plate A and the outer side of the left retaining plate, and a reinforcing rib B is provided between the horizontal connecting plate A and the inner side of the left retaining plate. This ensures that the overall steel structure formed by splicing the left retaining plate and the I-beam connecting beam A has stronger structural strength, thereby improving the overall performance of the foundation pit retaining structure. The bolted connection method allows for quick assembly and disassembly, facilitating later maintenance or component replacement.

[0011] Preferably, the inclined tie plate A is provided in two sets, which are respectively attached to both sides of the web of the I-beam connecting beam A.

[0012] Preferably, the inclined plate A, the left retaining plate, the reinforcing rib plate A and the reinforcing rib plate B are all welded to the horizontal connecting plate A, and the reinforcing rib plate A and the reinforcing rib plate B are welded to both sides of the left retaining plate.

[0013] Preferably, the second connector includes a horizontal connecting plate B arranged along the length of the bottom side of the left outer baffle. The lower surface of the horizontal connecting plate B is fixedly connected to the upper flange of the I-beam connecting beam B by a fourth connecting bolt. A diagonal brace B is also welded to the lower surface of the horizontal connecting plate B. The other end of the diagonal brace B is fixedly connected to the web of the horizontal connecting plate B by a third connecting bolt. A reinforcing rib C is provided between the horizontal connecting plate B and the inner side of the left outer baffle. This ensures that the overall steel structure formed by splicing the left outer baffle and the I-beam connecting beam B has stronger structural strength, thereby improving the overall performance of the foundation pit retaining structure. The bolted connection method allows for quick assembly and disassembly, facilitating later maintenance or component replacement.

[0014] Preferably, the right-side mounting frame includes a clamp unit C and a clamp unit D that cooperate with each other. The clamp unit C and clamp unit D are fixed to the outside of the right-side pile column by connecting bolts B. I-beam connecting beams C and D are respectively provided on the outer walls of the clamp unit C and clamp unit D. The other end of the I-beam connecting beam C is connected to the right-side retaining plate by a third connector, and the other end of the I-beam connecting beam D is connected to the right-side outer baffle by a fourth connector.

[0015] Preferably, the left retaining plate and the right retaining plate are arranged symmetrically, and the first connector and the third connector have the same structure, and the second connector and the fourth connector have the same structure.

[0016] Preferably, an auxiliary support beam is provided between the left and right retaining plates. One end of the auxiliary support beam is provided with a groove A that mates with a corresponding reinforcing rib B, and the other end of the auxiliary support beam is provided with a groove B that mates with a reinforcing rib D on the right retaining plate. This is used to improve the overall stability of the foundation pit retaining structure.

[0017] Preferably, the auxiliary support beam is a steel pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The engineering construction foundation pit retaining structure described in this utility model adopts a detachable connection between the installation frame and the pile column, which facilitates transportation and on-site assembly. The detachable connection between the retaining plate, the outer baffle and the installation frame allows for flexible adjustment of the component layout according to construction needs.

[0020] The engineering construction pit retaining structure described in this utility model has the outer walls of the left and right retaining plates fitting snugly against the inner wall of the pit during construction. This solves the problem of existing pit retaining structures being prone to causing the pit edge to collapse. In addition, by installing the left and right outer baffles on the left and right mounting brackets respectively, pedestrians can be prevented from approaching the pit, improving the safety factor of construction. Furthermore, the modular design allows for the individual replacement of each component, reducing maintenance costs.

[0021] The improved first connector in the foundation pit retaining structure of this utility model ensures stronger structural strength for the overall steel structure formed by the splicing of the left retaining plate and the I-beam connecting beam A, thereby improving the overall performance of the foundation pit retaining structure. The bolted connection method allows for quick assembly and disassembly, facilitating later maintenance or component replacement.

[0022] The engineering construction pit retaining structure of this utility model includes an auxiliary support beam between the left and right retaining plates to improve the overall stability of the pit retaining structure. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural schematic diagram of the pile column on the left.

[0026] Figure 3 This is a structural schematic diagram of the pile column on the right side;

[0027] Figure 4 This is a schematic diagram of the structure of Example 3.

[0028] In the diagram: 1. Left retaining plate; 2. Right retaining plate; 3. Left pile; 4. Right pile; 5. Left retaining plate; 6. Right retaining plate; 7. Hoop unit A; 8. Hoop unit B; 9. Connecting bolt A; 10. I-beam connecting beam A; 11. I-beam connecting beam B; 12. Hoop unit C; 13. Hoop unit D; 14. Connecting bolt B; 15. I-beam connecting beam C; 16. I-beam connecting beam D; 17. Horizontal connecting plate A; 18. Diagonal tie plate A; 19. First connecting bolt; 20. Second connecting bolt; 21. Reinforcing rib plate A; 22. Reinforcing rib plate B; 23. Horizontal connecting plate B; 24. Diagonal tie plate B; 25. Third connecting bolt; 26. Fourth connecting bolt; 27. Reinforcing rib plate C; 28. Auxiliary support beam. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0030] Example 1, such as Figure 1-2 As shown, the engineering construction foundation pit retaining structure includes a left pile column 3 and a right pile column 4 located on both sides of the foundation pit. A left mounting frame is detachably installed on the left pile column 3. A left retaining plate 1 and a left outer baffle 5 are detachably installed at the inner and outer ends of the left mounting frame, respectively. A right mounting frame is detachably installed on the right pile column 4. A right retaining plate 2 and a right outer baffle 6 are detachably installed at the inner and outer ends of the right mounting frame, respectively.

[0031] The mounting frame and piles are detachably connected, facilitating transportation and on-site assembly. The detachable connection between the retaining plate, outer baffle, and mounting frame allows for flexible adjustment of the component layout according to construction needs. During construction, the outer walls of the left retaining plate 1 and right retaining plate 2 are flush with the inner wall of the foundation pit, solving the problem of existing foundation pit retaining structures being prone to edge collapse. In addition, by installing the left outer baffle 5 and right outer baffle 6 on the left and right mounting brackets respectively, pedestrians are prevented from approaching the foundation pit, improving the safety factor of construction. Furthermore, the modular design allows for individual replacement of each component, reducing maintenance costs.

[0032] Example 2, as Figure 1-2As shown, the engineering construction foundation pit retaining structure includes a left pile column 3 and a right pile column 4 located on both sides of the foundation pit. A left mounting frame is detachably installed on the left pile column 3. A left retaining plate 1 and a left outer baffle 5 are detachably installed at the inner and outer ends of the left mounting frame, respectively. A right mounting frame is detachably installed on the right pile column 4. A right retaining plate 2 and a right outer baffle 6 are detachably installed at the inner and outer ends of the right mounting frame, respectively.

[0033] Furthermore, the left-side mounting frame includes mating clamp units A7 and B8, which are fixed to the outside of the left-side pile column 3 by connecting bolts A9. I-beam connecting beams A10 and B11 are respectively installed on the outer walls of clamp units A7 and B8. The other end of the I-beam connecting beam A10 is connected to the left-side retaining plate 1 via a first connector, and the other end of the I-beam connecting beam B11 is connected to the left-side outer baffle 5 via a second connector. The mounting frame and the pile column are detachably connected, reducing the difficulty of on-site adjustment, facilitating transportation and on-site assembly, and simplifying the installation process. The bolt connection allows for quick disassembly and assembly, facilitating later maintenance or component replacement.

[0034] Furthermore, the first connecting component includes a horizontal connecting plate A17 arranged along the length of the top side of the left retaining plate 1. The upper surface of the horizontal connecting plate A17 is fixedly connected to the lower flange of the I-beam connecting beam A10 via a second connecting bolt 20. A diagonal bracing plate A18 is also welded to the upper surface of the horizontal connecting plate A17. The other end of the diagonal bracing plate A18 is fixedly connected to the web of the I-beam connecting beam A10 via a first connecting bolt 19. A reinforcing rib plate A21 is provided between the horizontal connecting plate A17 and the outer side of the left retaining plate 1, and a reinforcing rib plate B22 is provided between the horizontal connecting plate A17 and the inner side of the left retaining plate 1. This ensures that the overall steel structure formed by splicing the left retaining plate 1 and the I-beam connecting beam A10 has stronger structural strength, thereby improving the overall performance of the foundation pit retaining structure. The bolted connection method allows for quick assembly and disassembly, facilitating later maintenance or component replacement.

[0035] Furthermore, the inclined tie plate A18 is provided in two sets, which are respectively attached to both sides of the web of the I-beam connecting beam A10.

[0036] Furthermore, the inclined plate A18, the left retaining plate 1, the reinforcing rib plate A21 and the reinforcing rib plate B22 are all welded to the horizontal connecting plate A17, and the reinforcing rib plate A21 and the reinforcing rib plate B22 are welded to both sides of the left retaining plate 1.

[0037] Furthermore, the second connecting component includes a horizontal connecting plate B23 arranged along the length of the bottom side of the left outer baffle 5. The lower surface of the horizontal connecting plate B23 is fixedly connected to the upper flange of the I-beam connecting beam B11 by a fourth connecting bolt 26. A diagonal brace B24 is also welded to the lower surface of the horizontal connecting plate B23. The other end of the diagonal brace B24 is fixedly connected to the web of the horizontal connecting plate B23 by a third connecting bolt 25. A reinforcing rib C27 is provided between the horizontal connecting plate B23 and the inner side of the left outer baffle 5. This ensures that the overall steel structure formed by splicing the left outer baffle 5 and the I-beam connecting beam B11 has stronger structural strength, thereby improving the overall performance of the foundation pit retaining structure. The bolt connection method allows for quick assembly and disassembly, facilitating later maintenance or component replacement.

[0038] Furthermore, referring to Figure 3 The right-side mounting frame includes clamp units C12 and D13 that cooperate with each other. The clamp units C12 and D13 are fixed to the outside of the right-side pile column 4 by connecting bolts B14. I-beam connecting beams C15 and D16 are respectively provided on the outer walls of the clamp units C12 and D13. The other end of the I-beam connecting beam C15 is connected to the right-side retaining plate 2 by a third connector. The other end of the I-beam connecting beam D16 is connected to the right-side outer baffle 6 by a fourth connector.

[0039] Furthermore, the left retaining plate 1 and the right retaining plate 2 are arranged symmetrically, and the first connecting member and the third connecting member have the same structure, and the second connecting member and the fourth connecting member have the same structure.

[0040] Example 3, referring to Figure 4 The difference from Embodiment 2 is that an auxiliary support beam 28 is provided between the left retaining plate 1 and the right retaining plate 2. One end of the auxiliary support beam 28 is provided with a groove A that mates with the corresponding reinforcing rib B22, and the other end of the auxiliary support beam 28 is provided with a groove B. The groove B mates with the reinforcing rib D on the right retaining plate 2. This is used to improve the overall stability of the foundation pit retaining structure.

[0041] Furthermore, the auxiliary support beam 28 is a steel pipe.

[0042] The engineering construction foundation pit retaining structure described in this utility model adopts a detachable connection between the installation frame and the pile column, which facilitates transportation and on-site assembly. The detachable connection between the retaining plate, the outer baffle and the installation frame allows for flexible adjustment of the component layout according to construction needs.

[0043] The engineering construction pit retaining structure described in this utility model has the outer walls of the left and right retaining plates fitting snugly against the inner wall of the pit during construction. This solves the problem of existing pit retaining structures being prone to causing the pit edge to collapse. In addition, by installing the left and right outer baffles on the left and right mounting brackets respectively, pedestrians can be prevented from approaching the pit, improving the safety factor of construction. Furthermore, the modular design allows for the individual replacement of each component, reducing maintenance costs.

[0044] The improved first connector in the foundation pit retaining structure of this utility model ensures stronger structural strength for the overall steel structure formed by the splicing of the left retaining plate and the I-beam connecting beam A, thereby improving the overall performance of the foundation pit retaining structure. The bolted connection method allows for quick assembly and disassembly, facilitating later maintenance or component replacement.

[0045] The engineering construction pit retaining structure of this utility model includes an auxiliary support beam between the left and right retaining plates to improve the overall stability of the pit retaining structure.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0047] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. An engineered construction excavation enclosure comprising a left-hand pile and a right-hand pile on either side of an excavation, characterised in that: A left mounting frame is detachably installed on the left pile column. A left retaining plate and a left outer baffle are detachably installed on the inner and outer ends of the left mounting frame, respectively. A right mounting frame is detachably installed on the right pile column. A right retaining plate and a right outer baffle are detachably installed on the inner and outer ends of the right mounting frame, respectively.

2. The engineered construction excavation enclosure of claim 1, wherein, The left mounting frame includes clamp unit A and clamp unit B that cooperate with each other. Clamp unit A and clamp unit B are fixed to the outside of the left pile column by connecting bolt A. I-beam connecting beam A and I-beam connecting beam B are respectively provided on the outer wall of clamp unit A and clamp unit B. The other end of I-beam connecting beam A is connected to the left retaining plate by a first connector, and the other end of I-beam connecting beam B is connected to the left outer baffle by a second connector.

3. The engineered construction excavation enclosure of claim 2, wherein, The first connector includes a horizontal connecting plate A arranged along the length of the top side of the left retaining plate. The upper surface of the horizontal connecting plate A is fixedly connected to the lower flange of the I-beam connecting beam A by a second connecting bolt. A diagonal brace A is also welded to the upper surface of the horizontal connecting plate A. The other end of the diagonal brace A is fixedly connected to the web of the I-beam connecting beam A by a first connecting bolt. A reinforcing rib A is provided between the horizontal connecting plate A and the outer side of the left retaining plate, and a reinforcing rib B is provided between the horizontal connecting plate A and the inner side of the left retaining plate.

4. The engineered construction excavation enclosure of claim 3, wherein, Two sets of inclined tie plates A are provided, which are respectively attached to both sides of the web of the I-beam connecting beam A.

5. The engineered construction excavation enclosure of claim 4, wherein, The inclined plate A, the left retaining plate, the reinforcing plate A and the reinforcing plate B are all welded to the horizontal connecting plate A. The reinforcing plate A and the reinforcing plate B are welded to both sides of the left retaining plate.

6. The engineered construction excavation enclosure of claim 5, wherein, The second connector includes a horizontal connecting plate B arranged along the length of the bottom side of the left outer baffle. The lower surface of the horizontal connecting plate B is fixedly connected to the upper flange of the I-beam connecting beam B by a fourth connecting bolt. A diagonal brace B is also welded to the lower surface of the horizontal connecting plate B. The other end of the diagonal brace B is fixedly connected to the web of the horizontal connecting plate B by a third connecting bolt. A reinforcing rib C is provided between the horizontal connecting plate B and the inner side of the left outer baffle.

7. The engineered construction excavation enclosure of claim 6, wherein, The right-side mounting frame includes clamp units C and D that cooperate with each other. Clamp units C and D are fixed to the outside of the right-side pile column by connecting bolts B. I-beam connecting beams C and D are respectively provided on the outer walls of clamp units C and D. The other end of the I-beam connecting beam C is connected to the right-side retaining plate by a third connector, and the other end of the I-beam connecting beam D is connected to the right-side outer baffle by a fourth connector.

8. The engineered construction excavation enclosure of claim 7, wherein, The left and right retaining plates are arranged symmetrically, and the first and third connecting pieces have the same structure, as do the second and fourth connecting pieces.

9. The engineered construction excavation enclosure of claim 8, wherein, An auxiliary support beam is provided between the left and right retaining plates. One end of the auxiliary support beam is provided with a groove A that mates with the corresponding reinforcing rib B, and the other end of the auxiliary support beam is provided with a groove B that mates with the reinforcing rib D on the right retaining plate.

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