Anti-scouring reinforcing structure for bridge pile foundation

Abstract

The utility model relates to the technical field of road and bridge engineering, and discloses a bridge pile foundation anti-scouring reinforcing structure which comprises a pile foundation column, a base and a protective cylinder, the base is fixed on the ground and used for supporting the protective cylinder, the protective cylinder is sleeved on the pile foundation column, a hoop is installed on the pile foundation column and used for preventing the protective cylinder from moving in the axial direction, and the protective cylinder is fixed on the base. A plurality of elastic pieces evenly distributed in the circumferential direction of the protective cylinder are arranged in the protective cylinder, the two ends of each elastic piece are fixed to the base and the hoop respectively, the elastic pieces are in an arc shape, and the arc tops abut against the inner wall of the protective cylinder. The protection device has the advantages that the protection barrel can prevent debris flow from directly impacting the pile foundation, damage to the outer wall of the pile foundation is avoided, meanwhile, the protection barrel slides when encountering large impact force, the elastic pieces deform so as to absorb part of the impact force brought by the debris flow, the impact force needing to be rigidly absorbed is reduced, and therefore the risk that the pile foundation cracks is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to road and bridge engineering technical field, especially a bridge pile foundation anti -scouring reinforcement structure. BACKGROUND

[0002] The bridge pile foundation is the lowermost part of the bridge structure directly contacting with the foundation, and is an important component of the lower structure of the bridge, which is directly placed on the rock or land foundation, and the top end is connected with the pier or abutment. The function of the bridge pile foundation is to bear all the loads transmitted from the upper structure, and to transmit them and the lower structure load to the foundation. The pile foundation erected in the valley needs to bear the impact of the huge flow formed by the mountain landslide and continuous rain in the rainstorm weather, so the bridge pile foundation needs to be reinforced to avoid affecting the service life of the bridge pile foundation.

[0003] The utility model discloses a pile foundation reinforcing device including a pile foundation, a support seat is installed at the bottom end of the pile foundation, and the support seat is used for stabilizing the pile foundation, a reinforcing bar is inserted into the pile foundation, and an outer layer for reinforcing the pile foundation is filled on the outer side of the pile foundation. The pile foundation reinforcing device improves the bottom support of the pile foundation by using the support seat, expands the support area, increases the cross-sectional area of the pile foundation by cooperating with the reinforcing bar and the outer layer, improves the bearing capacity, avoids the outer layer from cracking by cooperating with the carbon fiber cloth, and balances the stress by taking the reinforcing bar framework as the support of the outer layer, so that the stress is not excessively concentrated in a certain place and the pile foundation is not broken. The reinforcing device can better provide stable protection for the pile foundation, but it absorbs the impact of the mountain landslide by rigidity, which is easy to cause the pile foundation to crack and lead to the corrosion of the pile foundation in the later period. SUMMARY

[0004] The utility model aims at providing a bridge pile foundation anti-scouring reinforcement structure to overcome the shortcomings of the prior art.

[0005] The utility model discloses a bridge pile foundation anti-scouring reinforcement structure, including pile foundation column, base and protection cylinder, the base is fixed on the ground and is used for supporting the protection cylinder, the protection cylinder is covered on the pile foundation column, the pile foundation column is installed with the hoop, the hoop is used for preventing the protection cylinder from moving along the axial direction, a plurality of elastic sheets that are evenly distributed around the protection cylinder are arranged in the protection cylinder, both ends of the elastic sheet are fixed on the base and the hoop respectively, the elastic sheet is arc-shaped and the arc top is abutted on the inner wall of the protection cylinder.

[0006] Preferably, a flow distribution plate is further installed on the outer wall of the protection cylinder, the flow distribution plate is two pieces and is installed at an included angle, the included angle of the flow distribution plate is an acute angle and faces the protection cylinder.

[0007] Preferably, a counterforce frame is fixed on the protective cylinder, the shunt plates are hinged on the counterforce frame, and an energy storage member is installed on the counterforce frame and used for absorbing kinetic energy of the rotating shunt plates.

[0008] Preferably, the energy storage member comprises a fixed cylinder, a top rod, a spring and a connecting rod, the fixed cylinder is fixed on the counterforce frame along a middle line of the included angle, the top rod is used for compressively installing the spring in the fixed cylinder, the connecting rod is two and is hingedly connected on the top rod at an acute angle, the other end of the connecting rod is respectively hingedly connected on the corresponding shunt plate, and the acute angle formed by the two connecting rods faces the protective cylinder.

[0009] Preferably, a long-circular through hole is formed in the side wall of the fixed cylinder and extends along the axis of the fixed cylinder, and a bolt is arranged on the top rod in the fixed cylinder and is slidingly installed in the long-circular through hole.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The protective cylinder can avoid that the debris flow directly impacts the pile foundation, avoid that the outer wall of the pile foundation is damaged, and when the protective cylinder encounters a large impact force, the bolt is deformed to absorb part of the impact force brought by the debris flow, so that the impact force that needs to be rigidly absorbed is reduced, and the risk of cracking of the pile foundation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Fig. 1 is a structural schematic view of the utility model;

[0013] Figure 2 Fig. 2 is an installation structure schematic view of the counterforce frame;

[0014] Figure 3 Fig. 3 is a partial enlarged schematic view of A in Fig. 1; Figure 2

[0015] In the figure, 1 is a pile foundation column, 2 is a base, 3 is a protective cylinder, 4 is a hoop, 5 is a bolt, 6 is a shunt plate, 7 is a counterforce frame, 8 is a fixed cylinder, 9 is a top rod, 10 is a spring, 11 is a connecting rod, 12 is a long-circular through hole, and 13 is a bolt. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. ​

[0017] The following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents the preferred embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative effort fall within the scope of the application.

[0018] It should be noted that the embodiments and features in the embodiments of the application can be combined with each other without conflict.

[0019] It should be noted that: similar reference numerals and letters in the following drawings represent similar items, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] In the description of the application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0022] As Figure 1 and 2As shown in the drawings, a bridge pile foundation scouring prevention reinforcing structure comprises a pile foundation column 1, a base 2 and a protection cylinder 3, the base 2 is fixed on the ground for supporting the protection cylinder 3, the protection cylinder 3 is sleeved on the pile foundation column 1, a hoop 4 is installed on the pile foundation column 1, the hoop 4 is used for preventing the protection cylinder 3 from moving along the axial direction, a plurality of elastic sheets 5 are arranged in the protection cylinder 3 and are uniformly distributed around the protection cylinder 3, both ends of the elastic sheet 5 are fixed on the base 2 and the hoop 4 respectively (the base 2 and the hoop 4 are both fixed with connecting plates, and the elastic sheet 5 is detachably installed on the connecting plates through bolts), the elastic sheet 5 is arc-shaped and the arc top is abutted against the inner wall of the protection cylinder 3, the protection cylinder 3 can avoid the direct impact of the debris flow on the pile foundation and the damage of the outer wall of the pile foundation, and when the protection cylinder 3 encounters a large impact force, the protection cylinder 3 will slide to deform the elastic sheet 5 to absorb part of the impact force of the debris flow, thereby reducing the impact force that needs to be rigidly absorbed and reducing the risk of cracking of the pile foundation.

[0023] In the embodiment, as shown in Figure 1 and 2 , a flow distribution plate 6 is further installed on the outer wall of the protection cylinder 3, the flow distribution plate 6 is two pieces and is installed at an included angle, the included angle of the flow distribution plate 6 is an acute angle and faces the protection cylinder 3, and the angle tips of the included angle face the upstream of the riverbed, when the debris flow is relatively rapid, the flow distribution plate 6 can reduce the scouring of the water flow on the protection cylinder 3 and improve the service life.

[0024] In the embodiment, as shown in Figure 2 and 3 , a counterforce frame 7 is fixed on the protection cylinder 3, the flow distribution plate 6 is hinged on the counterforce frame 7, and an energy storage member is further installed on the counterforce frame 7, the energy storage member is used for absorbing the kinetic energy of the rotating flow distribution plate 6, the energy storage member comprises a fixed cylinder 8, a top rod 9, a spring 10 and a connecting rod 11, the fixed cylinder 8 is fixed on the counterforce frame 7 along the middle line of the included angle, the top rod 9 is used for compressively installing the spring 10 in the fixed cylinder 8, the connecting rod 11 is two pieces and is hingedly connected on the top rod 9 at an acute angle, the other end of the connecting rod 11 is respectively hingedly connected on the corresponding flow distribution plate 6, and the acute angle formed by the two connecting rods 11 faces the protection cylinder 3, the debris flow will generate a pressing force on the flow distribution plate 6 to make the two flow distribution plates 6 narrow, the narrowed flow distribution plate 6 generates a pushing force on the counterforce frame 7 through the top rod 9, the counterforce frame 7 generates a pulling force on the protection cylinder 3 towards the upstream of the river valley, the pulling force offsets part of the impact force of the debris flow, thereby reducing the impact force borne by the pile foundation, and the structure is simple, the cost is low and the protection effect is good.

[0025] In the embodiment, as shown in Figure 3 , a long circular hole 12 is formed in the side wall of the fixed cylinder 8, the long circular hole 12 extends along the axis of the fixed cylinder 8, a bolt 13 is arranged on the top rod 9 in the fixed cylinder 8, and the bolt 13 is slidingly installed in the long circular hole 12, so as to prevent the top rod 9 from sliding out of the fixed cylinder 8 when the top rod 9 pushes the flow distribution plate 6 back to the original position, thereby causing the energy storage function to fail.

[0026] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A scour protection and reinforcement structure for a bridge pile foundation, comprising a pile foundation column (1), a base (2) and a protection cylinder (3), the base (2) is fixed on the ground for supporting the protection cylinder (3), the protection cylinder (3) is sleeved on the pile foundation column (1), characterized in that: The pile column (1) is provided with a hoop (4) for preventing the protective cylinder (3) from moving in the axial direction, the protective cylinder (3) is provided with a plurality of elastic sheets (5) distributed around the circumference thereof, the two ends of the elastic sheet (5) are fixed on the base (2) and the hoop (4) respectively, and the elastic sheet (5) is arc-shaped with the arc top abutting against the inner wall of the protective cylinder (3).

2. The scour protection and reinforcement structure for bridge piles according to claim 1, characterized in that: The outer wall of the protective cylinder (3) is further provided with a flow distribution plate (6), the flow distribution plate (6) is two pieces and is installed at an included angle, the included angle of the flow distribution plate (6) is an acute angle and faces the protective cylinder (3).

3. A scour protection and reinforcement structure for a bridge pile foundation according to claim 2, characterized in that: The protective cylinder (3) is fixed with a counterforce frame (7), the flow distribution plate (6) is hinged on the counterforce frame (7), and the counterforce frame (7) is further provided with an energy storage member, which is used for absorbing the kinetic energy of the rotating flow distribution plate (6).

4. The scour protection and reinforcement structure for bridge pile foundations according to claim 3, characterized in that: The energy storage member comprises a fixed cylinder (8), a top rod (9), a spring (10) and a connecting rod (11), the fixed cylinder (8) is fixed on the counterforce frame (7) along the middle line of the included angle, the top rod (9) is used for compressing the spring (10) and installing it in the fixed cylinder (8), the connecting rod (11) is two pieces and is hinged on the top rod (9) at an acute angle, the other end of the connecting rod (11) is hinged on the corresponding flow distribution plate (6) respectively, and the acute angle formed by the two connecting rods (11) faces the protective cylinder (3).

5. A scour protection and reinforcement structure for a bridge pile foundation according to claim 4, characterized in that: The side wall of the fixed cylinder (8) is provided with an oblong through hole (12) extending along the axis of the fixed cylinder (8), the top rod (9) located in the fixed cylinder (8) is provided with a latch (13), and the latch (13) is slidingly installed in the oblong through hole (12).

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