Supporting structure suitable for mountainous area abrupt slope bridge pile foundation

Abstract

The utility model discloses a mountainous area abrupt slope bridge pile foundation support structure, including hollow diagonal bar, bridge foundation pile and abrupt slope surface, the bridge foundation pile is pre-buried on the abrupt slope surface, the bridge foundation pile is provided with the rectangular groove, the angle adjusting column casing is rotatingly connected between the inner wall of two sides of the rectangular groove, and the angle adjusting column casing is provided with the hollow diagonal bar. A hollow inclined supporting rod is arranged in the middle of the angle adjusting column barrel in a penetrating mode, the bottom end of the hollow inclined supporting rod is perpendicularly inserted into the abrupt slope face, the distance to the deep layer of a mountain is shortened, and therefore enough supporting capacity is provided. The top end of the hollow inclined supporting rod penetrates through the angle adjusting column barrel to be in threaded connection with a limiting baffle ring. The inclination angle and the position of the hollow inclined supporting rod are fixed, the hollow inclined supporting rod can provide lateral pulling force, the bridge pile foundation cannot incline towards the dangerous side of the abrupt slope, and even if the mountain surface landslide phenomenon occurs, a triangular structure jointly formed by the hollow inclined supporting rod, the bridge pile foundation and the abrupt slope face can provide enough supporting force so as to guarantee the safety of a bridge.

Description

Technical Field

[0001] The utility model relates to the technical field related to bridge engineering, in particular to a supporting structure suitable for pile foundations of steep slope bridges in mountainous areas. Background Art

[0002] A deep foundation consisting of piles and pile caps connected to the top of the piles is referred to as pile foundation. Pile foundation has the characteristics of high bearing capacity, small and uniform settlement, and can be applied to almost all engineering geological conditions and various types of projects, especially heavy buildings built on soft foundations. Therefore, pile foundations are widely used in coastal areas and soft soil areas. The number and arrangement of piles in the pile foundation should be determined according to the superstructure and load conditions. The pile foundation under the column can be one or a group of piles arranged in a polygon. The piles are vertical. If there is a large horizontal load, inclined piles should be arranged to resist the horizontal force.

[0003] When constructing pile foundations on steep slopes in mountainous areas, it is necessary to pre-dig the required deep trenches in advance, place the pile foundations in the deep trenches and fill them with concrete to form a stable pile foundation structure. However, steep slopes in mountainous areas are prone to landslides. Once a landslide occurs, a large amount of poured soil will exert lateral force on the pile foundations. Under the action of the lateral force, the pile foundations are very likely to tilt, and in severe cases, the entire bridge may even collapse. The conditions on steep slopes in mountainous areas are harsh, which is not conducive to pile foundation reinforcement construction. For this reason, the utility model provides a supporting structure suitable for pile foundations of steep slope bridges in mountainous areas to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a supporting structure suitable for the pile foundation of steep slope bridges in mountainous areas, so as to solve the problem mentioned in the above background technology that landslides are prone to occur in steep slope sections in mountainous areas. Once a landslide occurs, a large amount of poured soil will exert lateral force on the pile foundation. Under the action of the lateral force, the pile foundation is very likely to tilt, and in severe cases, it may even cause the entire bridge to collapse. The conditions in steep slope sections in mountainous areas are harsh, which is not conducive to the construction of pile foundation reinforcement.

[0005] To achieve the above purpose, the utility model solves the above technical problems as follows:

[0006] A supporting structure suitable for pile foundations of steep slope bridges in mountainous areas, comprising a hollow diagonal brace, a bridge pile and a steep slope surface, wherein the bridge pile is pre-buried in the steep slope surface, a rectangular groove is arranged on the bridge pile, an angle adjustment column is rotatably connected between the inner walls on both sides of the rectangular groove, a hollow diagonal brace is penetrated in the middle of the angle adjustment column, limited stop rings are threadedly connected on both sides of the angle adjustment column and on the outer sides of the hollow diagonal brace, and one end of the hollow diagonal brace is embedded in the steep slope surface and is connected to an anti-pullout component.

[0007] As a further solution of the utility model, the bridge foundation piles are arranged perpendicular to the horizontal plane, and the angle between the bridge foundation piles and the steep slope surface is an acute angle.

[0008] As a further solution of the utility model, the hollow diagonal brace is arranged perpendicular to the steep slope surface, and the hollow diagonal brace, the bridge foundation piles and the steep slope surface together form a triangular structure.

[0009] As a further solution of the utility model, the anti-pull-out component includes a hollow anti-pull-out head fixed at the bottom end of the hollow diagonal support rod, a columnar adjustment rod is arranged at the center of the hollow anti-pull-out head, one end of the columnar adjustment rod passes through the hollow diagonal support rod and is threadedly connected to a limiting ring, a plurality of cone umbrellas are equidistantly arranged on the part of the columnar adjustment rod located in the hollow anti-pull-out head, and a plurality of anti-pull-out rods are slidably embedded on the periphery of the cone umbrella and on the peripheral wall of the hollow anti-pull-out head.

[0010] As a further solution of the utility model, the end of the anti-pull-out rod passing through the hollow anti-pull-out head is provided with a conical head, the end of the anti-pull-out rod located in the hollow anti-pull-out head is fixedly connected to a limiting plate, and a return spring is sleeved between the limiting plate and the inner wall of the hollow anti-pull-out head and located on the outside of the anti-pull-out rod.

[0011] As a further solution of the utility model, a first pre-embedded hole is arranged on the steep slope surface, and the first pre-embedded hole is arranged corresponding to the bridge foundation pile.

[0012] As a further solution of the utility model, a second embedded hole is arranged on the steep slope surface and above the first embedded hole, the second embedded hole is arranged corresponding to the hollow anti-pulling head, and concrete is poured in the first embedded hole and the second embedded hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This support structure is suitable for the pile foundation of steep slope bridges in mountainous areas. The bottom end of the hollow diagonal brace is vertically inserted into the steep slope surface, shortening the distance to the deep layer of the mountain to provide sufficient support capacity, and the top end of the hollow diagonal brace passes through the angle adjustment column tube and is threadedly connected to the limit retaining ring. After tightening the limit retaining ring, the inclination angle and position of the hollow diagonal brace are fixed. The hollow diagonal brace can provide lateral tension, so that the bridge pile foundation will not tilt to the dangerous side of the steep slope. Even if the surface of the mountain landslides, the triangular structure formed by the hollow diagonal brace, the bridge pile foundation and the steep slope surface can provide sufficient support force to ensure the safety of the bridge;

[0015] 2. This is a supporting structure suitable for the pile foundation of steep slope bridges in mountainous areas. It resists the hollow diagonal brace and pulls the columnar adjustment rod outward. The columnar adjustment rod drives the cone umbrella to move. The annular slope of the cone umbrella squeezes each limit plate. The limit plate pushes the anti-pullout rod outward to extend the hollow anti-pullout head. Then the limit ring is tightened, so that the anti-pullout rod keeps the same position relative to the hollow diagonal brace, which can increase the anti-pullout resistance.

[0016] 3. The supporting structure is suitable for pile foundations of steep slope bridges in mountainous areas. The angle-adjustable column is embedded in the rectangular groove wall through the rotating shafts on both sides. The angle can be freely adjusted according to the insertion requirements of the hollow diagonal brace, thereby simplifying the construction steps. There is no need to make inclined holes with specific angles. It is suitable for construction on steep slopes with different slopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 This is a front view of a supporting structure suitable for pile foundations of steep slope bridges in mountainous areas according to the utility model;

[0019] Figure 2 This is a side sectional view of a supporting structure suitable for pile foundations of steep slope bridges in mountainous areas according to the utility model;

[0020] Figure 3 The utility model is a supporting structure attachment suitable for pile foundations of steep slope bridges in mountainous areas. Figure 1 A schematic diagram of the structure enlargement at point A;

[0021] Figure 4 It is a side sectional view of a hollow anti-uplift head in a supporting structure suitable for pile foundations of steep slope bridges in mountainous areas according to the utility model;

[0022] Figure 5 The utility model is a supporting structure attachment suitable for pile foundations of steep slope bridges in mountainous areas. Figure 2 A schematic diagram of the structure at B in FIG.

[0023] Figure 6 The utility model is a top view of a cross-sectional view of a hollow anti-uplift head in a supporting structure suitable for pile foundations of steep slope bridges in mountainous areas.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Hollow diagonal brace; 2. Bridge foundation pile; 21. Rectangular groove; 3. Steep slope surface; 31. First embedded hole; 32. Second embedded hole; 4. Angle adjustment column; 5. Limit retaining ring; 6. Anti-pullout assembly; 61. Hollow anti-pullout head; 62. Columnar adjustment rod; 63. Limiting ring; 64. Cone umbrella; 65. Anti-pullout rod; 66. Cone head; 67. Limiting plate; 68. Reset spring. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the embodiments.

[0027] See also Figure 1-6 The utility model provides a supporting structure suitable for steep slope bridge pile foundations in mountainous areas, comprising a hollow diagonal brace 1, a bridge pile 2 and a steep slope surface 3, wherein the bridge pile 2 is pre-buried on the steep slope surface 3, the bridge pile 2 is arranged perpendicular to the horizontal plane, and the angle between the bridge pile 2 and the steep slope surface 3 is an acute angle, and a first pre-buried hole 31 is arranged on the steep slope surface 3, and the first pre-buried hole 31 is arranged corresponding to the bridge pile 2;

[0028] Specifically, the first embedded hole 31 is perpendicular to the horizontal plane. After the bridge pile 2 is placed in the first embedded hole 31, the bridge pile 2 can vertically support the bridge upward, overcoming the influence of the steep slope surface 3 on the bridge, so that vehicles can travel on the stable bridge.

[0029] Furthermore, a rectangular groove 21 is provided on the bridge foundation pile 2, and an angle-adjusting column 4 is rotatably connected between the inner walls on both sides of the rectangular groove 21;

[0030] Specifically, the angle-adjustable column 4 is embedded in the wall of the rectangular groove 21 through the rotating shafts on both sides thereof, and the angle can be freely adjusted according to the insertion requirements of the hollow diagonal brace rod 1, thereby simplifying the construction steps, and no inclined holes with specific angles need to be made, which is suitable for construction on steep slopes 3 with different slopes;

[0031] Furthermore, a hollow diagonal support rod 1 is provided through the middle of the angle adjustment column 4, and both sides of the angle adjustment column 4 and the outer sides of the hollow diagonal support rod 1 are threadedly connected with a limit stop ring 5;

[0032] Specifically, tightening the limit rings 5 ​​on both sides of the angle adjustment column 4 can limit the position of the hollow diagonal brace 1, so that the position and angle of the hollow diagonal brace 1 can be fixed to transmit the support force of the anti-pullout component 6;

[0033] Further, the hollow diagonal brace 1 is arranged perpendicular to the steep slope surface 3, and the hollow diagonal brace 1, the bridge foundation pile 2 and the steep slope surface 3 together form a triangular structure, and a second embedded hole 32 is arranged on the steep slope surface 3 and above the first embedded hole 31, and the second embedded hole 32 is arranged corresponding to the hollow anti-pulling head 61, and the first embedded hole 31 and the second embedded hole 32 are both poured with concrete;

[0034] Specifically, the second embedded hole 32 is arranged perpendicular to the steep slope surface 3, so that the hollow anti-pulling head 61 can penetrate into the mountain in the shortest path, thereby enhancing the anti-landslide capability;

[0035] Specifically, the concrete can fill the gaps in the first embedded hole 31 and the second embedded hole 32 , thereby enhancing the contact force between the hollow diagonal brace 1 and the second embedded hole 32 , and between the bridge foundation pile 2 and the first embedded hole 31 .

[0036] Further, one end of the hollow diagonal brace 1 is embedded in the steep slope surface 3 and connected with an anti-pullout assembly 6, the anti-pullout assembly 6 includes a hollow anti-pullout head 61 fixed at the bottom end of the hollow diagonal brace 1, a columnar adjustment rod 62 is arranged at the center of the hollow anti-pullout head 61, one end of the columnar adjustment rod 62 passes through the hollow diagonal brace 1 and is threadedly connected to a limit ring 63, a portion of the columnar adjustment rod 62 located in the hollow anti-pullout head 61 is equidistantly provided with a plurality of cone umbrellas 64, and a plurality of anti-pullout rods 65 are slidably embedded on the periphery of the cone umbrella 64 and located on the peripheral wall of the hollow anti-pullout head 61;

[0037] Specifically, the hollow diagonal support rod 1 is pressed against and the columnar adjustment rod 62 is pulled outward. The columnar adjustment rod 62 drives the cone umbrella 64 to move. The annular slope of the cone umbrella 64 squeezes each limit plate 67. The limit plate 67 pushes the anti-pull-out rod 65 outward to extend out of the hollow anti-pull-out head 61. Then the limit ring 63 is tightened, so that the anti-pull-out rod 65 maintains an unchanged position relative to the hollow diagonal support rod 1, which can increase the anti-pull-out resistance.

[0038] Furthermore, one end of the anti-pullout rod 65 passing through the hollow anti-pullout head 61 is provided with a conical head 66, and one end of the anti-pullout rod 65 located in the hollow anti-pullout head 61 is fixedly connected to a limit plate 67, and a return spring 68 is sleeved between the limit plate 67 and the inner wall of the hollow anti-pullout head 61 and located on the outside of the anti-pullout rod 65;

[0039] Specifically, the conical head 66 facilitates the anti-pulling rod 65 to be embedded in the deep layer of the mountain body, and the extended anti-pulling rod 65 connects the mountain body and the hollow anti-pulling head 61 into an integrated structure, thereby enhancing the anti-pulling ability of the hollow anti-pulling head 61;

[0040] Specifically, the return spring 68 pushes the limit plate 67 to retract into the hollow anti-pullout head 61 to avoid the resistance of the hollow anti-pullout head 61 when inserted into the second embedded hole 32. Loosening the limit ring 63 can release the columnar adjustment rod 62, and the return spring 68 pushes the limit plate 67 to reset, so that the hollow anti-pullout head 61 can be retracted into the conical head 66, which is convenient for removing the anti-pullout component 6.

[0041] The construction steps of the supporting structure for the pile foundation of steep slope bridges in mountainous areas are as follows:

[0042] Step 1: excavate a first embedded hole 31 and a second embedded hole 32 on the steep slope surface 3, wherein the second embedded hole 32 is located above the first embedded hole 31, and the extension lines of the first embedded hole 31 and the second embedded hole 32 are compared to one point;

[0043] Step 2: insert the bridge pile 2 into the first embedded hole 31, insert the hollow anti-pulling head 61 into the second embedded hole 32, and pass the end of the hollow diagonal brace 1 away from the hollow anti-pulling head 61 through the angle adjustment column 4, so that the hollow diagonal brace 1, the bridge pile 2 and the steep slope surface 3 together form a triangular structure;

[0044] Step 3: Hold the hollow diagonal support rod 1 and pull the columnar adjustment rod 62 outwards. The columnar adjustment rod 62 drives the cone umbrella 64 to move. The annular slope of the cone umbrella 64 squeezes each limit plate 67. The limit plate 67 pushes the anti-pullout rod 65 outwards to extend out of the hollow anti-pullout head 61. Then tighten the limit ring 63, so that the anti-pullout rod 65 keeps the same position relative to the hollow diagonal support rod 1, which can increase the anti-pullout resistance.

[0045] Step 4: Tighten the limit stop rings 5 ​​on both sides of the angle adjustment column 4 to fix the inclination angle and position of the hollow diagonal support rod 1;

[0046] Step 5: Pour concrete into the first pre-buried hole 31 and the second pre-buried hole 32, and a stable supporting structure can be formed after the concrete solidifies.

Claims

1. A supporting structure suitable for steep slope bridge pile foundations in mountainous areas, comprising a hollow diagonal brace (1), a bridge foundation pile (2) and a steep slope surface (3), characterized in that: The bridge foundation pile (2) is pre-buried on the steep slope surface (3), and a rectangular groove (21) is provided on the bridge foundation pile (2). An angle adjustment column (4) is rotatably connected between the inner walls on both sides of the rectangular groove (21), and a hollow diagonal support rod (1) is provided through the middle of the angle adjustment column tube (4). Both sides of the angle adjustment column tube (4) and the outer side of the hollow diagonal support rod (1) are threadedly connected with a limit stop ring (5), and one end of the hollow diagonal support rod (1) is embedded in the steep slope surface (3) and is connected to an anti-pullout component (6).

2. A supporting structure suitable for pile foundations of steep slope bridges in mountainous areas according to claim 1, characterized in that: The bridge foundation pile (2) is arranged perpendicular to the horizontal plane, and the angle between the bridge foundation pile (2) and the steep slope surface (3) is an acute angle.

3. A supporting structure suitable for pile foundations of steep slope bridges in mountainous areas according to claim 2, characterized in that: The hollow diagonal bracing rod (1) is arranged perpendicular to the steep slope surface (3), and the hollow diagonal bracing rod (1), the bridge foundation pile (2) and the steep slope surface (3) together form a triangular structure.

4. The supporting structure for pile foundation of steep slope bridges in mountainous areas according to claim 1 is characterized in that: The anti-pullout assembly (6) comprises a hollow anti-pullout head (61) fixed at the bottom end of the hollow diagonal support rod (1); a columnar adjustment rod (62) is arranged at the center of the hollow anti-pullout head (61); one end of the columnar adjustment rod (62) passes through the hollow diagonal support rod (1) and is threadedly connected to a limit ring (63); a portion of the columnar adjustment rod (62) located inside the hollow anti-pullout head (61) is equidistantly provided with a plurality of cone umbrellas (64); a plurality of anti-pullout rods (65) are slidably embedded around the cone umbrella (64) and located on the peripheral wall of the hollow anti-pullout head (61).

5. A supporting structure suitable for pile foundations of steep slope bridges in mountainous areas according to claim 4, characterized in that: One end of the anti-pullout rod (65) passing through the hollow anti-pullout head (61) is provided with a conical head (66), and one end of the anti-pullout rod (65) located inside the hollow anti-pullout head (61) is fixedly connected to a limit plate (67), and a return spring (68) is sleeved between the limit plate (67) and the inner wall of the hollow anti-pullout head (61) and located on the outside of the anti-pullout rod (65).

6. The supporting structure for pile foundation of steep slope bridges in mountainous areas according to claim 1 is characterized in that: A first embedded hole (31) is provided on the steep slope surface (3), and the first embedded hole (31) is provided corresponding to the bridge foundation pile (2).

7. The supporting structure for pile foundation of steep slope bridges in mountainous areas according to claim 4 is characterized in that: A second embedded hole (32) is provided on the steep slope surface (3) and above the first embedded hole (31); the second embedded hole (32) is provided corresponding to the hollow anti-pulling head (61); and concrete is poured in both the first embedded hole (31) and the second embedded hole (32).

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