Large cantilever concrete member and foundation pit instability prevention supporting system

Abstract

The invention belongs to the technical field of building foundations and main body engineering, and particularly relates to a large-cantilever concrete member and a foundation pit instability prevention supporting system.The large-cantilever concrete member and foundation pit instability prevention supporting system comprises a fixing assembly arranged at the end, away from a frame column, of the bottom of a side beam, the frame column is vertically arranged, and the side beam is fixedly connected with one side of the top of the frame column; the bearing platform is arranged at the bottom of the frame column; the anchoring steel plate is fixedly arranged at the top end of the bearing platform, and the anchoring steel plate and the fixing assembly are located on the same side of the frame column; the bottom end of the inclined supporting pipe is fixedly connected with the anchoring steel plate, the top end of the inclined supporting pipe is fixedly connected with the fixing assembly, the bottom end of the inclined supporting pipe is close to the bottom end of the frame column, and the top end of the inclined supporting pipe inclines in the direction away from the frame column. The inclined supporting pipes are fixed between the side beams and the bearing platforms through the fixing assemblies and the anchoring steel plates, so that the inclined supporting pipes, the frame columns and the side beams form a triangular structure, stable supporting of the side beams is achieved, and the purpose of avoiding the problems of frame body sedimentation, cantilever floor structure damage and roof cantilever structure instability is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building foundations and main projects, and particularly relates to a large cantilever concrete member and a support system for preventing foundation pit instability. Background Art

[0002] Under the condition of ensuring the overall stability of the beam-slab structure and the upper steel structure roof, it is necessary to avoid the settlement of the support caused by the settlement of the foundation pit, so as to avoid the damage of the cantilever floor structure and even the instability of the roof cantilever structure. According to the actual situation of the project, under the condition of changing the surrounding environment of the foundation pit, the bearing form of the load is converted to reduce the load on the edge of the foundation pit, and to ensure the safety and stability of the retaining system during the construction of the deep foundation pit.

[0003] Based on the above situation, a large cantilever concrete member and a support system for preventing foundation pit instability are designed. Summary of the Invention

[0004] The purpose of the present invention is to provide a large cantilever concrete member and a support system for preventing foundation pit instability, so as to solve the above problems and achieve the purpose of avoiding the settlement of the support, the damage of the cantilever floor structure and the instability of the roof cantilever structure.

[0005] To achieve the above purpose, the present invention provides the following solution: A large cantilever concrete member and a support system for preventing foundation pit instability, including: a fixing component arranged at one end of the bottom of the side beam far from the frame column, the frame column is vertically arranged, and the side beam is fixedly connected to one side of the top of the frame column; a bearing platform arranged at the bottom of the frame column; an anchoring steel plate fixedly arranged at the top of the bearing platform, the anchoring steel plate and the fixing component are located on the same side of the frame column; an inclined support pipe, the bottom end of which is fixedly connected to the anchoring steel plate, the top end of the inclined support pipe is fixedly connected to the fixing component, the bottom end of the inclined support pipe is close to the bottom end of the frame column, and the top end of the inclined support pipe is inclined away from the frame column.

[0006] Based on the large cantilever concrete member and the support system for preventing foundation pit instability of the present invention, the fixing component includes a bottom plate and two side plates, the two side plates are symmetrically arranged on both sides of the side beam, the side plates are fixedly connected to the side beam through a connecting component, the bottom plate is fixedly connected to the bottom ends of the two side plates, and the top end of the inclined support pipe is fixedly connected to the bottom end of the bottom plate.

[0007] Based on the large cantilever concrete member and the support system for preventing foundation pit instability of the present invention, the connecting component includes a plurality of connecting bolts, the two side plates are fixedly connected to the side beam through the plurality of connecting bolts, and the plurality of connecting bolts are arranged in an array.

[0008] Based on the large cantilever concrete member and the support system for preventing foundation pit instability of the present invention, the connecting bolt is a tie bolt.

[0009] A large cantilever concrete member and a foundation pit instability prevention support system based on the present invention, a positioning hole is provided in the center of the anchor plate, and the bottom end of the diagonal brace pipe is arranged in the positioning hole.

[0010] A large cantilever concrete member and a foundation pit instability prevention support system based on the present invention, the anchor plate is fixedly connected to the bearing platform through a plurality of anchor bolts, and the plurality of anchor bolts are arranged in an array.

[0011] A large cantilever concrete member and a foundation pit instability prevention support system based on the present invention, a plurality of rib plates are arranged on the anchor plate, and the plurality of rib plates are arranged at equal intervals along the circumference of the positioning hole.

[0012] A large cantilever concrete member and a foundation pit instability prevention support system based on the present invention, a top plate is arranged at the top end of the side beam.

[0013] A large cantilever concrete member and a foundation pit instability prevention support system based on the present invention, a support frame is arranged between the top end of the top plate and the bottom end of the steel structure.

[0014] A large cantilever concrete member and a foundation pit instability prevention support system based on the present invention, the bottom plate is fixedly connected to the side plate by welding.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention fixes the diagonal brace pipe between the side beam and the bearing platform through the arranged fixing components and the anchor plate, and through the staggered arrangement of the fixing components and the anchor plate, the diagonal brace pipe, the frame column and the side beam form a triangular structure, and the high stability of the triangular structure is used to realize the stable support of the side beam, so as to achieve the purpose of avoiding problems such as the settlement of the formwork, the damage of the cantilever floor structure, and the instability of the roof cantilever structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the whole of the present invention.

[0018] Figure 2 It is a front view of the fixing component of the present invention.

[0019] Figure 3 It is a side view of the fixing component of the present invention.

[0020] Figure 4Schematic diagram of the anchoring steel plate of the present invention.

[0021] Figure 5 Schematic diagram of the inclined support pipe and the bearing platform of the present invention.

[0022] Wherein, 1. Frame column; 2. Bearing platform; 3. Side beam; 4. Top plate; 5. Support frame; 6. Steel structure; 7. Fixed component; 8. Inclined support pipe; 9. Anchoring steel plate; 10. Side plate; 11. Connecting bolt; 12. Bottom plate; 13. Positioning hole; 14. Anchoring bolt; 15. Rib plate. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0025] Refer to Figures 1 to 5 As shown, the present invention provides a large cantilever concrete member and an anti-foundation pit instability support system, including: a fixed component 7, arranged at one end of the bottom of the side beam 3 away from the frame column 1, the frame column 1 is arranged vertically, and the side beam 3 is fixedly connected to one side of the top of the frame column 1; a bearing platform 2, arranged at the bottom of the frame column 1; an anchoring steel plate 9, fixedly arranged at the top of the bearing platform 2, and the anchoring steel plate 9 and the fixed component 7 are on the same side of the frame column 1; an inclined support pipe 8, the bottom end of which is fixedly connected to the anchoring steel plate 9, the top end of the inclined support pipe 8 is fixedly connected to the fixed component 7, the bottom end of the inclined support pipe 8 is close to the bottom end of the frame column 1, and the top end of the inclined support pipe 8 inclines away from the frame column 1.

[0026] Furthermore, the fixed component 7 includes a bottom plate 12 and two side plates 10, the two side plates 10 are symmetrically arranged on both sides of the side beam 3, the side plates 10 are fixedly connected to the side beam 3 through a connecting component, the bottom plate 12 is fixedly connected to the bottom ends of the two side plates 10, and the top end of the inclined support pipe 8 is fixedly connected to the bottom end of the bottom plate 12.

[0027] The height of the side plate 10 is 520 mm, the width is 800 mm, and the thickness is 20 mm.

[0028] The thickness of the bottom plate 12 is 20 mm, and it is welded to the side plate 10 as a whole by groove welding to form a U-shaped steel hoop, and the inclined support pipe 8 is fully welded to the bottom plate 12.

[0029] Further, the connecting components include a number of connecting bolts 11. The two side plates 10 are fixedly connected to the side beam 3 by a number of connecting bolts 11, and the number of connecting bolts 11 is arranged in an array.

[0030] Further, the connecting bolt 11 is a tie bolt.

[0031] The diameter of the connecting bolt 11 is 20 mm. The longitudinal spacing of the connecting bolts 11 arranged in an array is 200 mm, and the transverse spacing is 160 mm.

[0032] During on-site construction, when the side beam 3 can be penetrated, tie bolts with a diameter of 20 mm are used for connection. When the side beam 3 cannot be penetrated, screws with a buried depth of 400 mm are used for connection.

[0033] When using the connecting bolt 11 to connect the side plate 10 and the side beam 3, an adhesive needs to be brushed. The adhesive uses a modified epoxy-based structural adhesive or a modified vinyl ester-based structural adhesive.

[0034] Further, a positioning hole 13 is provided at the center of the anchor plate 9, and the bottom end of the diagonal bracing pipe 8 is arranged in the positioning hole 13.

[0035] The thickness of the anchor plate 9 is 20 mm, and it is fully welded to the bottom end of the diagonal bracing pipe 8.

[0036] Further, the anchor plate 9 is fixedly connected to the bearing platform 2 by a number of anchor bolts 14, and the number of anchor bolts 14 is arranged in an array.

[0037] Further, a number of rib plates 15 are provided on the anchor plate 9, and the number of rib plates 15 is arranged at equal intervals along the circumference of the positioning hole 13.

[0038] Further, a top plate 4 is provided at the top end of the side beam 3.

[0039] Further, a support frame 5 is provided between the top end of the top plate 4 and the bottom end of the steel structure 6.

[0040] Further, the bottom plate 12 is fixedly connected to the side plate 10 by welding.

[0041] The process flow of the present invention is as follows:

[0042] First, anchor holes are drilled on the side beam 3, then the two side plates 10 are fixed on the opposite sides of the side beam 3 by the connecting bolts 11, then the bottom plate 12 is fixedly welded to the bottom ends of the two side plates 10 by welding, then the anchor plate 9 is installed on the bearing platform 2 by the anchor bolts 14, then the bottom end of the diagonal bracing pipe 8 is installed in the positioning hole 13, and the top end of the diagonal bracing pipe 8 is installed at the bottom end of the bottom plate 12, and finally the diagonal bracing pipe 8 is fixedly welded to the anchor plate 9 and the bottom plate 12 respectively by welding.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0044] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope of the present invention.

Claims

1. A large cantilever concrete member and a support system for preventing foundation pit instability, characterized in that, Comprising: A fixed component (7) is arranged at one end of the bottom of the side beam (3) away from the frame column (1). The frame column (1) is arranged vertically, and the side beam (3) is fixedly connected to one side of the top of the frame column (1); a bearing platform (2) is arranged at the bottom of the frame column (1); an anchoring steel plate (9) is fixedly arranged at the top end of the bearing platform (2). The anchoring steel plate (9) and the fixed component (7) are located on the same side of the frame column (1); a diagonal bracing pipe (8) has its bottom end fixedly connected to the anchoring steel plate (9), and its top end fixedly connected to the fixed component (7). The bottom end of the diagonal bracing pipe (8) is close to the bottom end of the frame column (1), and the top end of the diagonal bracing pipe (8) inclines away from the frame column (1).

2. The large cantilever concrete member and the anti-foundation pit instability support system according to claim 1, wherein, The fixed component (7) includes a bottom plate (12) and two side plates (10). The two side plates (10) are symmetrically arranged on both sides of the side beam (3). The side plates (10) are fixedly connected to the side beam (3) through a connecting component. The bottom plate (12) is fixedly connected to the bottom ends of the two side plates (10). The top end of the diagonal bracing pipe (8) is fixedly connected to the bottom end of the bottom plate (12).

3. The large cantilever concrete member and the anti-foundation pit instability support system according to claim 2, wherein The connecting component includes a plurality of connecting bolts (11). The two side plates (10) are fixedly connected to the side beam (3) through the plurality of connecting bolts (11). The plurality of connecting bolts (11) are arranged in an array.

4. A large cantilever concrete member and a foundation pit instability prevention support system according to claim 3, characterized in that The connecting bolts (11) are tension bolts.

5. A large cantilever concrete member and an anti-foundation pit instability support system according to claim 1, characterized in that, A positioning hole (13) is formed in the center of the anchoring steel plate (9). The bottom end of the diagonal bracing pipe (8) is arranged in the positioning hole (13).

6. The large cantilever concrete member and anti-foundation pit instability support system according to claim 5, characterized in that, The anchoring steel plate (9) is fixedly connected to the bearing platform (2) through a plurality of anchoring bolts (14). The plurality of anchoring bolts (14) are arranged in an array.

7. A large cantilever concrete member and a foundation pit instability prevention support system according to claim 5, characterized in that, A plurality of rib plates (15) are arranged on the anchoring steel plate (9). The plurality of rib plates (15) are arranged at equal intervals along the circumference of the positioning hole (13).

8. A large cantilever concrete member and a foundation pit instability prevention support system according to claim 1, characterized in that A top plate (4) is arranged at the top end of the side beam (3).

9. A large cantilever concrete member and a foundation pit instability prevention support system according to claim 8, characterized in that, A support frame (5) is arranged between the top end of the top plate (4) and the bottom end of the steel structure (6).

10. A large cantilever concrete member and a foundation pit instability prevention support system according to claim 2, characterized in that, The bottom plate (12) is fixedly connected to the side plates (10) by welding.

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