Bridge pile foundation scouring resistant device

Abstract

The present application relates to bridge protection technical field, specifically a kind of bridge pile foundation scouring resistance device.The rotating buffer plate is set on pile foundation, and the lower end of buffer plate is movably connected with pile foundation;When the turbulent water flows to pile foundation, the buffer plate opposite to the water flow direction will swing towards the direction close to pile foundation, thereby buffering the impact force of water flow to pile foundation, at the same time, the buffer plate and connecting belt can change the flow direction of part of water flow, reduce the possibility of sand and stone in water flow directly contacting pile foundation and scouring pile foundation;Buffer plate and connecting belt can also play the role of blocking sand and stone;The flow splitter is fixed outside buffer plate, which can cut water flow and change the flow direction of water flow, further reduce the impact force of water flow to pile foundation;When water flow contacts pile foundation and flows backward, buffer plate swings away from pile foundation under the driving of water flow, further disturbs water flow, reduces the scouring of water flow to pile foundation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge protection, in particular to a bridge pile foundation anti-scouring device. BACKGROUND

[0002] The bridge pile foundation is a structure arranged at the bottom of the bridge for supporting the bridge, and its main function is to ensure that the bridge can stably bear various loads and external forces during the construction of the bridge.

[0003] Since the bottom of the bridge pile foundation is immersed in the water body all year round, it will be subjected to a certain water flow impact force. The water body in the natural river contains stones and sand and the like, and especially in the rainy season, landslides will occur in the mountains beside the river, and the stones in the mountains will be carried by the turbulent water flow to continuously scour the pile foundation, resulting in peeling, diameter reduction, exposed reinforcement and corrosion of the surface layer concrete of the pile foundation, and affecting the safety of the bridge structure. SUMMARY

[0004] The technical problem to be solved by the present application is the problem of peeling, diameter reduction, exposed reinforcement and corrosion of the surface layer concrete of the pile foundation caused by the scouring of the water flow and stones and the like on the bridge pile foundation all year round.

[0005] To solve the problem, the present application provides a device capable of reducing the impact of the water flow and stones and the like on the bridge pile foundation, and the specific scheme is as follows:

[0006] The bridge pile foundation anti-scouring device comprises a first fixing plate fixedly arranged on the pile foundation and a plurality of buffer plates rotatably connected to the first fixing plate, an outer side wall of each buffer plate is fixedly provided with a flow dividing plate, each flow dividing plate is used for cutting the water flow impacting the pile foundation, and the lower end of each buffer plate is movably connected to the pile foundation above the first fixing plate through a connecting piece; the lower parts of two adjacent buffer plates are connected through a connecting belt.

[0007] Compared with the prior art, the present application has the beneficial effects that:

[0008] The present application is characterized in that the buffer plates are rotatably arranged on the pile foundation and movably connected to the pile foundation at the lower end. When the turbulent water flow flows towards the pile foundation, the buffer plates opposite to the flow direction of the water flow will swing towards the pile foundation, thereby buffering the impact force of the water flow on the pile foundation. At the same time, the buffer plates and the connecting belt can change the flow direction of part of the water flow, thereby reducing the possibility that the stones and the like in the water flow directly contact and scour the pile foundation. The buffer plates and the connecting belt can also block the stones and the like. The flow dividing plates fixed outside the buffer plates can cut the water flow, change the flow direction of the water flow, and further reduce the impact force of the water flow on the pile foundation. When the water flow flows back after contacting the pile foundation, the buffer plates will swing away from the pile foundation under the driving of the water flow, thereby further disturbing the water flow and reducing the scouring of the water flow on the pile foundation.

[0009] As preferred, the further technical solutions of the present application are:

[0010] The lower part of the first fixed plate is provided with mounting slots equal in number to the buffer plates, and pivot holes are arranged on both sides of the mounting slots, the upper end of the buffer plate is horizontally inserted with a pivot, and both ends of the pivot are rotatably arranged in the pivot holes on both sides.

[0011] The pile foundation above the first fixed plate is fixedly sleeved with a second fixed plate, the upper end of the connecting piece is movably connected with the second fixed plate, and the lower end of the connecting piece is hingedly connected with the lower end of the buffer plate.

[0012] The connecting piece comprises a connecting rod and a guide rod, a plurality of vertical through holes are arranged on the second fixed plate, and the guide rod is movably inserted in the through holes; the lower end of the guide rod is hingedly connected with the upper end of the connecting rod, and the lower end of the connecting rod is hingedly connected with the lower end of the buffer plate.

[0013] A buffer spring is sleeved on the guide rod, the top end of the buffer spring is fixed with the top end of the guide rod, and the bottom end of the buffer spring is fixed with the top surface of the second fixed plate. The vertically sliding guide rod and the buffer spring sleeved thereon are matched, the connection with the lower end of the buffer plate is realized through the connecting rod, when the turbulent water flow flows to the pile foundation, the buffer plate swings to the pile foundation under the action of the water flow, drives the connecting rod and the guide rod to move downward, so that the buffer spring is compressed, at this time the force of this part of water flow is absorbed by the buffer plate and the buffer spring, thereby reducing the impact force of the water flow on the pile foundation.

[0014] The connecting belts are made of flexible materials, and the middle positions of the outer side walls of the connecting belts are provided with inflatable rods. The inflatable rods are used to absorb the water flow impact force impacting on the connecting belts, further reducing the impact force of the water flow on the pile foundation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is the overall structure schematic diagram of the embodiment of the present application;

[0016] Fig. 2 is the connecting piece and buffer plate structure schematic diagram of the embodiment of the present application;

[0017] Fig. 3 is the connecting belt structure schematic diagram of the embodiment of the present application;

[0018] In the figure: 1, pile foundation; 2, second fixed plate; 3, connecting piece; 31, buffer spring; 32, guide rod; 33, connecting rod; 4, first fixed plate; 5, flow distribution plate; 6, buffer plate; 61, pivot; 7, connecting belt; 71, inflatable rod. DETAILED DESCRIPTION

[0019] The application will be further described in connection with the following examples, which are intended to be purely exemplary and not limiting to the scope of the application.

[0020] Referring to the drawings Figs. 1-3 The embodiment of the application discloses a bridge pile foundation scouring resistance device, which comprises a first fixed plate 4 fixedly sleeved on a pile foundation 1 and a plurality of buffer plates 6 rotationally connected to the first fixed plate 4, a shunt plate 5 is fixed to the outer side wall of each buffer plate 6, the shunt plate 5 is perpendicular to the outer side of the buffer plate 6, each shunt plate 5 is used for cutting water flow impacting the pile foundation 1, the lower end of each buffer plate 6 is movably connected to the pile foundation 1 above the first fixed plate 4 through a connecting piece 3, and the lower parts of adjacent two buffer plates 6 are connected through a connecting belt 7.

[0021] In the embodiment, the lower part of the first fixed plate 4 is provided with installation grooves in the same number as that of the buffer plates 6, the two sides of each installation groove are provided with a rotating shaft hole, the upper end of each buffer plate 6 is horizontally inserted with a rotating shaft 61, and the two ends of the rotating shaft 61 are rotationally arranged in the rotating shaft holes on the two sides and are limited in the rotating shaft holes. The upper end of the buffer plate 6 is rotationally connected to the first fixed plate 4 through the rotating shaft 61 and the rotating shaft hole.

[0022] In the embodiment, the pile foundation 1 above the first fixed plate 4 is fixedly sleeved with a second fixed plate 2, the upper end of the connecting piece 3 is movably arranged on the second fixed plate 2, and the lower end of the connecting piece 3 is hingedly connected to the lower end of the buffer plate 6. The second fixed plate 2 provides a movable connecting point for the upper end of the connecting piece 3.

[0023] Preferably, the first fixed plate 4 and the second fixed plate 2 of the embodiment are both made of annular plates, the through holes on the second fixed plate 2 are equally spaced, and the surfaces of the first fixed plate 4 and the second fixed plate 2 are both covered with waterproof paint, preferably acrylic waterproof paint, to avoid corrosion and rust of the first fixed plate 4 and the second fixed plate 2 due to long-term immersion in water.

[0024] In the embodiment, the connecting piece 3 comprises a connecting rod 33 and a guide rod 32, a plurality of vertical through holes are formed in the second fixed plate 2, and the guide rod 32 is movably inserted into the through holes. Specifically, a buffer spring 31 is sleeved on the guide rod 32, a cap is fixed to the top end of the guide rod 32, the top end of the buffer spring 31 is fixed to the bottom end of the cap, and the bottom end of the buffer spring 31 is fixed to the top surface of the second fixed plate 2 around the through hole. The guide rod 32 and the buffer spring 31 sleeved thereon are used in cooperation, the connecting rod 33 is used for connecting the lower end of the buffer plate 6, when the turbulent water flows to the pile foundation 1, the buffer plate 6 swings to the pile foundation 1 under the action of the water flow, drives the connecting rod 33 and the guide rod 32 to move downward, so that the buffer spring 31 is compressed, at this time, the force of this part of the water flow is absorbed by the buffer plate 6 and the buffer spring 31, thereby reducing the impact force of the water flow on the pile foundation 1.

[0025] In the embodiment, the two ends of the connecting rod 33, the lower end of the guide rod 32 passing through the second fixed plate 2, and the lower end of the outer sidewall of the buffer plate 6 are all fixed with connecting rings, the upper end of the connecting rod 33 and the lower end of the guide rod 32 are hinged through two connecting rings, and the lower end of the connecting rod 33 and the lower end of the outer sidewall of the buffer plate 6 are hinged through a connecting ring.

[0026] In the embodiment, the connecting belt 7 is made of flexible material, preferably cut from a steel plate rubber waterstop, and other rubber materials with certain supporting force can also be used to make the connecting belt of the application. The middle position of the outer sidewall of each connecting belt 7 is provided with an inflatable rod 71. The adjacent buffer plates 6 are connected by the connecting belt 7, the gap between the adjacent buffer plates 6 is supplemented, the water flow and sand flowing from the gap between the adjacent buffer plates 6 are intercepted, and the swing of the single buffer plate 6 in the water is not affected. The water flow impact force on the connecting belt 7 is absorbed by the inflatable rod 71, further reducing the impact force of the water flow on the pile foundation 1.

[0027] In the embodiment, the connecting belt 7 is made of flexible material, preferably cut from a steel plate rubber waterstop, and other rubber materials with certain supporting force can also be used to make the connecting belt of the application. The middle position of the outer sidewall of each connecting belt 7 is provided with an inflatable rod 71. The adjacent buffer plates 6 are connected by the connecting belt 7, the gap between the adjacent buffer plates 6 is supplemented, the water flow and sand flowing from the gap between the adjacent buffer plates 6 are intercepted, and the swing of the single buffer plate 6 in the water is not affected. The water flow impact force on the connecting belt 7 is absorbed by the inflatable rod 71, further reducing the impact force of the water flow on the pile foundation 1.

[0028] The above only describes the preferred embodiments of the application, and is not intended to limit the scope of the application. Any equivalent changes made according to the content of the specification and the drawings of the application are included in the scope of the application.

Claims

1. An anti-scouring device for a bridge pile foundation, characterized by: The utility model relates to a pile foundation protection device, including first fixed plate (4) of fixed sleeve is set on pile foundation (1) and a plurality of buffer board (6) are rotatably connected on first fixed plate (4), the outer side wall of each buffer board (6) is fixed with shunt plate (5), each shunt plate (5) is used for cutting the water flow of impact pile foundation (1), and the lower end of each buffer board (6) is movably connected with the upper pile foundation (1) of first fixed plate (4) through connecting piece (3);The lower part of adjacent two buffer boards (6) is connected through connecting band (7); The upper pile foundation (1) of first fixed plate (4) is fixed with sleeve second fixed plate (2), and the upper end of connecting piece (3) is movably connected with second fixed plate (2), and the lower end of connecting piece (3) is hingedly connected with the lower end of buffer board (6); Connecting piece (3) includes connecting rod (33) and guide rod (32), and a plurality of vertical through holes are formed in second fixed plate (2), and guide rod (32) is movably inserted in the through hole;The lower end of guide rod (32) is hingedly connected with the upper end of connecting rod (33), and the lower end of connecting rod (33) is hingedly connected with the lower end of buffer board (6); The buffer spring (31) is sleeved on the guide rod (32), the top end of the buffer spring (31) is fixed with the top end of the guide rod (32), and the bottom end of the buffer spring (31) is fixed with the top surface of the second fixed plate (2).

2. The bridge pile scour protection device of claim 1, wherein: The lower part of first fixed plate (4) is provided with installation slot same in number with buffer board (6), and pivot hole is formed on both sides of installation slot, the upper end of buffer board (6) is horizontally inserted with pivot (61), and both ends of pivot (61) are rotatably arranged in the pivot hole on both sides respectively.

3. The bridge pile scour protection device of claim 1, wherein: The connecting band (7) is made of flexible material, and the middle position of the outer side wall of each connecting band (7) is provided with inflatable rod (71).

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