Combined foundation pit supporting pile

Abstract

The utility model provides a combined type foundation pit supporting pile, and relates to the technical field of foundation pit supporting structures, the combined type foundation pit supporting pile comprises second angle steel, and the second angle steel and first angle steel are fixedly connected and located on the same straight line; the connecting block can be attached to the inner walls of the first angle steel and the second angle steel, and the connecting block is connected with the first angle steel and the second angle steel; and the abutting block and the connecting block are attached to each other and fixedly connected, and the abutting block can be fixedly connected with the prefabricated pipe pile. The problem that the bending resistance of the combined foundation pit supporting pile is poor due to the fact that a circular concrete prefabricated pipe pile cannot be firmly connected with the maximum diagonal line of a steel latticed column in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit support structures, and in particular to a combined foundation pit support pile. Background Art

[0002] The foundation pit support piles widely used at present, whether vertical foundation pit support piles or oblique foundation pit support piles, generally have steel lattice columns above the foundation pit floor, bored piles below the foundation pit floor, and the bottom of the steel lattice column is inserted about two meters into the top of the bored pile. The foundation pit support piles have the disadvantages of waste mud generated during construction, causing environmental pollution, difficult to control construction quality, relatively slow construction speed and relatively low efficiency.

[0003] In recent years, attempts have been made to use a combined foundation pit support pile consisting of a steel lattice column on the upper part and a circular precast concrete pipe pile on the lower part, such as directly fitting the circular precast concrete pipe pile into the steel lattice column and then welding the two together. This structure has the following shortcomings: due to the poor fit between the outer circumference of the circular precast concrete pipe pile and the square inner hole of the square steel lattice column, the coaxial alignment of the steel lattice column and the circular precast concrete pipe pile is poor, which directly affects the firmness, strength and bearing capacity of the combined foundation pit support pile. When the combined foundation pit support pile is used as an inclined foundation pit support pile, the above shortcomings are particularly obvious. In addition, the overlapping parts of the circular precast concrete pipe pile and the steel lattice column of the combined foundation pit support pile are relatively large, which relatively increases the material cost. Furthermore, the combined foundation pit support piles in the prior art cannot firmly connect the circular precast concrete pipe pile and the steel lattice column at the maximum diagonal, resulting in poor bending resistance of the combined foundation pit support pile. Utility Model Content

[0004] The purpose of the present application is to provide a combined foundation pit supporting pile, which is used to solve the problem in the related art that the circular prefabricated concrete pipe piles cannot be firmly connected to the maximum diagonal of the steel lattice column, resulting in poor bending resistance of the combined foundation pit supporting pile.

[0005] The combined foundation pit support pile provided in this application adopts the following technical solution:

[0006] A combined foundation pit support pile, comprising

[0007] A second angle steel, the second angle steel is fixedly connected to the first angle steel and is located on the same straight line;

[0008] A connecting block, wherein the connecting block can be fitted with the inner walls of the first angle steel and the second angle steel, and the connecting block connects the first angle steel and the second angle steel;

[0009] The abutment block is fitted with and fixedly connected to the connection block, and the abutment block can be fixedly connected to the prefabricated pipe pile.

[0010] By adopting the above technical solution, the first angle steel and the second angle steel on the steel lattice column are connected in the vertical direction and are located on the same straight line. The steel lattice column is connected to the prefabricated pipe pile through the connecting block and the abutting block. The connecting block can fit with the inner wall of the vertically arranged angle steel, and the abutting block fits with the connecting block and the prefabricated pipe pile. When the steel lattice column is plugged into the prefabricated pipe pile, a gap is left at the maximum diagonal of the circular prefabricated pipe pile and the steel lattice column, that is, between the prefabricated pipe pile and the right-angle top of the angle steel. Since there is no support at the maximum diagonal of the steel lattice column, the bending resistance is poor.

[0011] The connection block fills the gap between the right-angle inner walls of the first angle steel and the second angle steel, which can improve the problem of poor bending resistance caused by the lack of support at the maximum diagonal of the steel lattice column. At the same time, the connection block has no cross section in the horizontal direction, which solves the problem of poor bending resistance caused by the welded cross section of the first angle steel and the second angle steel. At the same time, the two ends of the abutment block are respectively abutted with the connection block and the prefabricated pipe pile to prevent the connection block from shaking relative to the prefabricated pipe pile, thereby improving the stability of the entire combined foundation pit support pile and preventing the occurrence of shaking from affecting the bending resistance of the combined foundation pit support pile at the maximum diagonal of the steel lattice column.

[0012] Optionally, each of the first angle steels and each of the second angle steels on the same straight line are welded into a whole as a same angle steel.

[0013] By adopting the above technical scheme, the first angle steel and the second angle steel are welded into the same angle steel, so that the circular precast concrete pipe piles and the steel lattice columns can have a relatively good fit, and the coaxial alignment of the steel lattice columns and the circular precast concrete pipe piles can be relatively good, thereby ensuring the firmness, strength and bearing capacity of the combined foundation pit supporting piles.

[0014] Optionally, the connection block includes right-angled surfaces that are perpendicular to each other, and the right-angled surfaces are in contact with the first angle steel and the second angle steel.

[0015] By adopting the above technical solution, the two mutually perpendicular right-angle surfaces of the connecting block are attached and welded to the first angle steel and the second angle steel, so that the connection between the first angle steel and the second angle steel is more stable, preventing the connecting block from shaking relative to the prefabricated pipe piles, and improving the stability of the entire combined foundation pit support piles.

[0016] Optionally, the abutment block is a curved plate, and the inner wall of the curved plate is gap-matched with the outer circumferential wall of the prefabricated pipe pile.

[0017] By adopting the above technical solution, one side of the abutment block is welded to the connection block, and one side is set to an arc shape to match the gap with the outer circumferential wall of the prefabricated pipe pile, so that the prefabricated pipe pile and the abutment block are fixedly connected.

[0018] Optionally, the gap between the inner circumferential wall formed by the four arc panels and the outer circumferential wall of the prefabricated pipe pile is filled with cement to dry and fix.

[0019] By adopting the above technical solution, the gap between the inner circumferential wall formed by the four arc panels and the outer circumferential wall of the prefabricated pipe pile is filled with cement and dried to fix it, so that the arc panel can be fixedly connected to the concrete side wall of the prefabricated pipe pile.

[0020] Optionally, it also includes a connecting end plate, which is fixedly connected to the circular end plate, and the connecting end plate is fixedly connected to the bottommost supporting plate.

[0021] By adopting the above technical solution, the side wall of the connecting end plate is welded to the bottom plate of the steel lattice column, and the bottom end is welded to the circular end plate, so that the circular end plate on the prefabricated pipe pile can be fixedly connected to the steel lattice column through the connecting end plate.

[0022] Optionally, the connecting block is fixedly connected to the connecting end plate.

[0023] By adopting the above technical solution, the connection block is fixedly connected to the connection end plate, so that the connection end plate can be further fixedly connected to the steel lattice column through the connection block, thereby improving the stability of the connection end plate.

[0024] Optionally, the arc panel is fixedly connected to the connecting end plate.

[0025] By adopting the above technical solution, the arc panel is fixedly connected to the connecting end plate, the arc panel is welded to the connecting block over a large area, and the arc panel supports the connecting end plate, thereby improving the stability of the connecting end plate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The first angle steel and the second angle steel on the steel lattice column are connected in the vertical direction and are located on the same straight line. The steel lattice column is connected to the prefabricated pipe pile through the connecting block and the abutment block. The connecting block can fit with the inner wall of the vertically arranged angle steel, and the abutment block fits with the connecting block and the prefabricated pipe pile. When the steel lattice column is plugged into the prefabricated pipe pile, there is a gap between the circular prefabricated pipe pile and the maximum diagonal of the steel lattice column, that is, between the prefabricated pipe pile and the right-angle top of the angle steel. Since there is no support at the maximum diagonal of the steel lattice column, the bending resistance is poor.

[0028] The connection block fills the gap between the right-angle inner wall of the first angle steel and the second angle steel, which can improve the problem of poor bending resistance caused by the lack of support at the maximum diagonal of the steel lattice column. At the same time, the connection block has no cross section in the horizontal direction, which solves the problem of poor bending resistance caused by the welded cross section of the first angle steel and the second angle steel. At the same time, the two ends of the abutment block are respectively abutted with the connection block and the prefabricated pipe pile to prevent the connection block from shaking relative to the prefabricated pipe pile, thereby improving the stability of the entire combined foundation pit support pile.

[0029] 2. Through the welding connection of the bottom end plate, connecting block and abutment block, the connecting end plate and the steel lattice column are firmly connected, thereby improving the stability of the entire combined foundation pit support pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the first viewing angle of the embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of the second viewing angle of the embodiment of the present application;

[0032] Figure 3 This is an exploded schematic diagram of an embodiment of the present application;

[0033] Figure 4 for Figure 3 A partial enlarged schematic diagram of part A.

[0034] In the figure:

[0035] 10. Second angle steel;

[0036] 20. Connecting block; 21. Right angle surface;

[0037] 30. abutment block; 31. arc panel;

[0038] 40. Connect the end plates;

[0039] 50. Prefabricated pipe piles;

[0040] 60. Steel lattice column; 61. First angle steel; 62. Tie plate. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0042] The embodiment of the present application discloses a combined foundation pit supporting pile.

[0043] Reference Figure 1 and Figure 2, including prefabricated pipe piles 50 and steel lattice columns 60. The prefabricated pipe piles 50 are prefabricated concrete prefabricated pipe piles 50. The steel bars are inserted into the concrete pipe piles during prefabrication. The circular end plates are fixedly connected to the steel bars. The steel lattice columns 60 include four first angle steels 61 and a plurality of tie plates 62. A tie plate 62 is arranged between every two first angle steels 61. The steel lattice columns 60 are welded by the tie plates 62 and the first angle steels 61.

[0044] Reference Figure 1 and Figure 2 A combined foundation pit support pile includes a second angle steel 10, a connection block 20, an abutment block 30 and a connection end plate 40. The second angle steel 10 and the first angle steel 61 are located on the same straight line and are fixedly welded to form a whole angle steel. The connection block 20 is located on the inner wall of the first angle steel 61 and the second angle steel 10, and is in contact with the inner wall of the first angle steel 61 and the second angle steel 10. The connection block 20 is welded to the first angle steel 61 and the second angle steel 10. The abutment block 30 is located between the connection block 20 and the prefabricated pipe pile 50, and the abutment block 30 connects the connection block 20 and the prefabricated pipe pile 50.

[0045] The first angle steel 61 and the second angle steel 10 on the steel lattice column 60 are connected in the vertical direction and are located on the same straight line. The steel lattice column 60 is connected to the prefabricated pipe pile 50 through the connecting block 20 and the abutting block 30. The connecting block 20 can be fitted with the inner wall of the angle steel vertically arranged, and the abutting block 30 is fitted with the connecting block 20 and the prefabricated pipe pile 50. When the steel lattice column 60 is plugged into the prefabricated pipe pile 50, a gap is left at the maximum diagonal of the circular prefabricated pipe pile 50 and the steel lattice column 60, that is, between the prefabricated pipe pile 50 and the right-angle top of the angle steel. Since there is no support at the maximum diagonal of the steel lattice column 60, the bending resistance is poor.

[0046] In this embodiment, the connection block 20 fills the gap between the right-angle inner wall of the first angle steel 61 and the second angle steel 10, which can improve the problem of poor bending resistance caused by the lack of support at the maximum diagonal of the steel lattice column 60. At the same time, the connection block 20 has no cross section in the horizontal direction, which solves the problem of poor bending resistance caused by the welded cross section of the first angle steel 61 and the second angle steel 10. At the same time, the two ends of the abutment block 30 are respectively abutted with the connection block 20 and the prefabricated pipe pile 50 to prevent the connection block 20 from shaking relative to the prefabricated pipe pile 50, thereby improving the stability of the entire combined foundation pit support pile and preventing the occurrence of shaking from affecting the bending resistance of the combined foundation pit support pile at the maximum diagonal of the steel lattice column 60.

[0047] Reference Figure 1 and Figure 2The first angle steel 61 and the second angle steel 10 located on the same straight line are welded into an integral angle steel, and the connecting block 20 includes mutually perpendicular right-angled surfaces 21, and the two right-angled surfaces 21 are respectively welded to the inner walls of both sides of the integral angle steel. The two right-angled surfaces 21 of the connecting block 20 fill the gap between the first angle steel 61 and the right-angled inner wall of the second angle steel 10, which can solve the problem of poor bending resistance caused by the lack of support at the maximum diagonal of the steel lattice column 60.

[0048] Reference Figure 1 and Figure 2 The side of the connection block 20 close to the prefabricated pipe pile 50 can be a horizontal surface, and the abutment block 30 is a curved plate 31. One side of the curved plate 31 is a horizontal surface that is welded to the connection block 20, and the other side is a curved surface that is gap-matched with the outer circumferential wall of the prefabricated pipe pile 50. The abutment block 30 and the connection block 20 are welded together. There are four connection blocks 20, which are respectively welded to four whole angle steels. There are four curved plates 31, which are respectively welded to four connection blocks 20. The gap between the inner circumferential wall enclosed by the four curved plates 31 and the outer circumferential wall of the prefabricated pipe pile 50 is filled with cement to dry and fix.

[0049] The problem of poor bending resistance caused by the lack of support at the maximum diagonal of the steel lattice column 60 is solved by welding the second angle steel 10 and the first angle steel 61 along the same straight line, connecting the first angle steel 61 and the second angle steel 10 with the connecting block 20 and welding the welded angle steel to a whole angle steel, welding the arc panel 31 to the connecting block 20, and filling the gap between the arc panel 31 and the outer circumferential wall of the prefabricated pipe pile 50 with mortar to dry and fix it.

[0050] Reference Figure 1 and Figure 2 The connecting end plate 40 is located at the side wall of the bottom end plate 62 of the steel lattice column 60, the connecting end plate 40 is welded to the end plate 62, the prefabricated pipe pile 50 is located below the connecting end plate 40, and the bottom end of the connecting end plate 40 is welded to the circular end plate.

[0051] The connecting end plate 40 is provided with four welding points, which are respectively welded to the four bottom-most gusset plates 62 . The circular end plate is welded to the connecting end plate 40 , which can stabilize the circular end plate, thereby fixing the prefabricated pipe pile 50 and the steel lattice column 60 .

[0052] Reference Figure 1 and Figure 2 , one side of the connection block 20 is welded to a whole angle steel, and one side is fixedly connected to the side wall of the connection end plate 40. The connection end plate 40 can be a rectangular parallelepiped, and the connection block 20 can be a pentagonal prism. The four right angles of the connection end plate 40 are four welding points welded to the gusset plate 62, and the four sides are welding edges that are attached and welded to the connection block 20. The connection block 20 is welded to a whole angle steel and to the connection end plate 40, which can play a stabilizing role.

[0053] Reference Figure 3 and Figure 4 The abutment block 30 is an arc panel 31, the side wall of the arc panel 31 is fixedly connected to the connection block 20, and the top is fixedly connected to the connection end plate 40. The horizontal surface of the side wall of the arc panel 31 is fitted and welded to the connection block 20, and the top of the arc panel 31 is welded to the connection end plate 40. The arc panel 31 is fixed relative to the connection block 20, and plays a certain supporting and fixing role for the connection end plate 40, preventing the connection end plate 40 from displacement or deformation during bending, thereby affecting the position and bending resistance of the prefabricated pipe pile 50. The side of the arc panel 31 away from the connection block 20 is set to an arc shape, which is convenient for fitting with the prefabricated pipe pile 50.

[0054] The implementation principle of a combined foundation pit supporting pile in the present embodiment is as follows: when the prefabricated pipe pile 50 is inserted into the steel lattice column 60 to form a combined foundation pit supporting pile, a second angle steel 10 is added, and the second angle steel 10 is welded to the first angle steel 61 on the steel lattice column 60 on the same straight line to form the same angle steel, and the tip of the pentagonal prism-shaped connecting block 20 is directed toward the right-angle inner wall of the angle steel and welded to the first angle steel 61 and the second angle steel 10, so as to achieve the effect of supporting the first angle steel 61 and the second angle steel 10 and enhancing the bending strength at the maximum diagonal of the steel lattice column 60.

[0055] The connecting end plate 40 is in a rectangular shape, and the four right angles of the connecting end plate 40 are welded to the bottom plate 62 of the steel lattice column 60, the four right angle sides of the connecting end plate 40 are welded to the connecting block 20, and the bottom end of the connecting plate is welded to the circular end plate of the prefabricated pipe pile 50. The connecting end plate 40 connects the steel lattice column 60 and the top of the prefabricated pipe pile 50, so that the steel lattice column 60 and the top of the prefabricated pipe pile 50 are mutually fixed, with strong stability and stronger bending resistance.

[0056] At the same time, the arc-shaped abutment block 30 is welded to the connection block 20 over a large area, and the gap between the arc-shaped abutment block 30 and the outer circumferential wall of the prefabricated pipe pile 50 is filled with cement to dry and fix, so that the steel lattice column 60 is firmly connected to the side wall of the prefabricated pipe pile 50.

[0057] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A combined foundation pit support pile, comprising a prefabricated pipe pile (50) and a steel lattice column (60), wherein the prefabricated pipe pile (50) comprises a circular end plate, and the steel lattice column (60) comprises a first angle steel (61) and a tie plate (62), characterized in that: Also includes A second angle steel (10), the second angle steel (10) being fixedly connected to the first angle steel (61) and being located on the same straight line; A connecting block (20), the connecting block (20) being capable of being fitted with the inner walls of the first angle steel (61) and the second angle steel (10), the connecting block (20) connecting the first angle steel (61) and the second angle steel (10); An abutment block (30), wherein the abutment block (30) and the connection block (20) are mutually fitted and fixedly connected, and the abutment block (30) can be fixedly connected to the prefabricated pipe pile (50).

2. The combined foundation pit support pile according to claim 1, characterized in that: Each of the first angle steels (61) and each of the second angle steels (10) on the same straight line are welded into a whole as a single angle steel.

3. The combined foundation pit support pile according to claim 2, characterized in that: The connection block (20) comprises right-angled surfaces (21) that are perpendicular to each other, and the right-angled surfaces (21) are in contact with the first angle steel (61) and the second angle steel (10).

4. The combined foundation pit support pile according to claim 3, characterized in that: The abutment block (30) is a curved plate (31), and the inner wall of the curved plate (31) is gap-matched with the outer circumferential wall of the prefabricated pipe pile (50).

5. The combined foundation pit support pile according to claim 4, characterized in that: The gap between the inner circumferential wall formed by the four arc panels (31) and the outer circumferential wall of the prefabricated pipe pile (50) is filled with cement to dry and fix.

6. The combined foundation pit support pile according to claim 5, characterized in that: It also comprises a connecting end plate (40), wherein the connecting end plate (40) is fixedly connected to the circular end plate, and the connecting end plate (40) is fixedly connected to the bottommost gusset plate (62).

7. The combined foundation pit support pile according to claim 6, characterized in that: The connection block (20) is fixedly connected to the connection end plate (40).

8. The combined foundation pit support pile according to claim 6, characterized in that: The curved panel (31) is fixedly connected to the connecting end plate (40).

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