Multi-cavity energy-absorbing bridge pier anti-collision structure

Abstract

The present invention provides a multi-cavity energy-absorbing bridge pier anti-collision structure, which belongs to the field of traffic safety facilities, including a bridge pier, a rotating energy-absorbing hose, an auxiliary energy-absorbing chamber, an inner rotating steel plate, an arc-shaped soft steel energy-absorbing extrusion plate, an SMA coordinated limit reset connecting wire, a fixing bolt, a main energy-absorbing chamber, a lightweight energy-absorbing material, an outer energy-absorbing steel plate, a soft protective layer, an upper sealing plate, and a lower sealing plate. A circle of rotating energy-absorbing hose is arranged on the outer layer of the bridge pier, and arc-shaped soft steel energy-absorbing extrusion plates with convex surfaces facing alternately opposite directions are arranged between the inner rotating steel plate and the outer energy-absorbing steel plate. An SMA coordinated limit reset connecting wire is arranged to pass through the midpoints of each arc-shaped soft steel energy-absorbing extrusion plate in turn. The present invention has the beneficial effects of strong anti-collision ability, large deformation resistance, high stability, greatly buffering the impact force of the collision, forcing the impacted hull to return to the normal driving direction, and improving the safety performance of the bridge pier and the hull.

Description

Technical Field

[0001] The invention belongs to the field of traffic safety facilities, and in particular relates to a multi-cavity energy-absorbing bridge pier anti-collision structure. Background Art

[0002] Anti-collision bridge piers are a very common marine traffic safety device and have been widely used in some relatively dangerous areas. When objects such as hulls collide with bridge piers, setting up an anti-collision bridge pier with buffering performance can greatly buffer the huge impact force generated by the collision, thereby greatly reducing the serious consequences of traffic collision accidents. Under the huge impact force, strong, impact-resistant and good buffering performance anti-collision bridge piers are very necessary marine traffic safety infrastructure. In the past twenty years, my country has built nearly 100 cross-river and cross-sea bridges, many of which are super projects. However, incidents such as hulls colliding with bridge piers have caused major casualties and property losses. This shows that there are still deficiencies in the anti-collision design and anti-collision measures of bridge piers in marine traffic. my country's research on bridge pier anti-collision started relatively late, and the degree of attention in the early stage was not good enough. Many anti-collision design theories and calculation methods are reference According to foreign research results, it is particularly important to develop and design anti-collision pier facilities that can effectively absorb and buffer the impact force of objects such as the hull on the bridge piers, and can take away most of the kinetic energy of the hull through the yaw mechanism, so as to achieve the design purpose of no damage to the bridge, no destruction of the hull, and strong enough piers. my country's maritime traffic plays an important role in the national economy and social development. Anti-collision piers are very important safety guarantee facilities for maritime traffic, which can effectively play a role in prevention, warning and safety protection, and can effectively reduce the losses caused by accidents, effectively reduce the probability of damage to the hull and piers caused by accidental collisions, reduce the probability of property losses and casualties, and protect people's lives and property from infringement to the greatest extent. Therefore, it is very important to provide an anti-collision pier with good impact resistance, low cost, long life, higher safety, green environmental protection, and good use effect. Various types of collisions and other accidents often cause casualties and economic losses due to the huge impact force generated by the collision. In order to minimize the losses caused by the collision, it is necessary to develop anti-collision piers with better anti-collision effects. It is very necessary to build a series of safety anti-collision projects such as anti-collision piers with better anti-collision effects in some offshore areas. It can significantly control the consequences of traffic accidents caused by collisions and can effectively reduce casualties and economic losses. Summary of the invention

[0003] In order to solve the above-mentioned technical problems, the present invention provides a multi-cavity energy-absorbing bridge pier anti-collision structure, which can significantly improve the energy consumption efficiency and is beneficial to changing the direction of hull movement. It can not only protect the bridge piers, but also help protect the hull.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A multi-cavity energy-absorbing bridge pier anti-collision structure, including a bridge pier, a rotating energy-absorbing hose, an auxiliary energy-absorbing cavity, an inner rotating steel plate, an arc-shaped soft steel energy-absorbing extrusion plate, an SMA coordinated limit reset connecting wire, a fixing bolt, a main energy-absorbing cavity, a lightweight energy-absorbing material, an outer energy-absorbing steel plate, a soft protective layer, an upper sealing plate, and a lower sealing plate.

[0006] A circle of rotating energy dissipation hose is arranged on the outer layer of the pier, the interior of the rotating energy dissipation hose is an auxiliary energy dissipation cavity, an inner rotating steel plate is arranged on the outer side of the inner rotating steel plate, an outer energy dissipation steel plate is arranged on the outer side of the outer energy dissipation steel plate, a soft protective layer is arranged on the outer layer of the outer energy dissipation steel plate, an arc-shaped soft steel energy dissipation extrusion plate with convex surfaces facing in opposite directions is arranged between the inner rotating steel plate and the outer energy dissipation steel plate, the two ends of the arc-shaped soft steel energy dissipation extrusion plate are fixedly connected with the inner rotating steel plate and the outer energy dissipation steel plate, and an SMA coordination is arranged. The limit adjustment and reset connecting wire passes through the midpoint of each arc-shaped soft steel energy-absorbing extrusion plate in turn, and is fixed on the convex surface of the arc-shaped soft steel energy-absorbing extrusion plate with fixing bolts; a main energy-absorbing cavity is arranged between two arc-shaped soft steel energy-absorbing extrusion plates with opposite and adjacent concave surfaces; a lightweight energy-absorbing material is arranged between two arc-shaped soft steel energy-absorbing extrusion plates with opposite and adjacent convex surfaces; upper and lower sealing plates are arranged above and below the multi-cavity energy-absorbing pier anti-collision structure except for the corresponding positions of the arc-shaped soft steel energy-absorbing extrusion plates and the main energy-absorbing cavity.

[0007] Furthermore, the rotating energy dissipation hose, the inner rotating steel plate, the arc-shaped soft steel energy dissipation extrusion plate, and the outer energy dissipation steel plate are made of low yield point energy dissipation steel plates.

[0008] Furthermore, the lightweight energy-consuming material adopts foamed aluminum.

[0009] Furthermore, adjacent rotating energy dissipation hoses are arranged tangentially to each other.

[0010] The advantages of the present invention are:

[0011] The beneficial effects of the present invention are strong anti-collision ability, high anti-deformation ability and high stability. It can absorb the energy generated by the collision to the maximum extent, greatly buffer the huge impact force generated by the collision, and effectively reduce the probability of damage to the piers and hulls caused by accidental collisions. At the same time, when a collision occurs, the inner rotating steel plate can rotate relative to the pier through the rotating energy dissipation hose and the pier, which can force the impacted hull to return to the normal driving direction, thereby improving the safety performance of the piers and hulls. The inner rotating steel plate, the arc-shaped soft steel energy-absorbing extrusion plate and the outer energy-absorbing steel plate have good coordinated connection performance. By extruding and absorbing the light energy-absorbing material, the collision force is dispersed and transmitted, so that the energy consumption efficiency is significantly improved, thereby reducing the direct force on the pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the multi-cavity energy-absorbing bridge pier anti-collision structure of the present invention.

[0013] Figure 2 for Figure 1 AA cross-section diagram of .

[0014] In the figure: 1 is the bridge pier; 2 is the rotating energy dissipation hose; 3 is the auxiliary energy dissipation cavity; 4 is the inner rotating steel plate; 5 is the arc-shaped soft steel energy dissipation extrusion plate; 6 is the SMA coordinated limit reset connecting wire; 7 is the fixing bolt; 8 is the main energy dissipation cavity; 9 is the lightweight energy dissipation material; 10 is the outer energy dissipation steel plate; 11 is the soft protective layer; 12 is the upper sealing plate; 13 is the lower sealing plate. DETAILED DESCRIPTION

[0015] In order to further illustrate the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0016] Example: Figure 1 , Figure 2 As shown, a multi-cavity energy-absorbing bridge pier anti-collision structure comprises a bridge pier 1, a rotating energy-absorbing hose 2, an auxiliary energy-absorbing chamber 3, an inner rotating steel plate 4, an arc-shaped soft steel energy-absorbing extrusion plate 5, an SMA coordinated limit reset connecting wire 6, a fixing bolt 7, a main energy-absorbing chamber 8, a lightweight energy-absorbing material 9, an outer energy-absorbing steel plate 10, a soft protective layer 11, an upper sealing plate 12, and a lower sealing plate 13. A circle of rotating energy-absorbing hose 2 is arranged on the outer layer of the bridge pier 1, the interior of the rotating energy-absorbing hose 2 is the auxiliary energy-absorbing chamber 3, an inner rotating steel plate 4 is arranged on the outer layer of the circle of rotating energy-absorbing hose 2, an outer energy-absorbing steel plate 10 is arranged on the outer side of the inner rotating steel plate 4, a soft protective layer 11 is arranged on the outer layer of the outer energy-absorbing steel plate 10, and a space between the inner rotating steel plate 4 and the outer energy-absorbing steel plate 10 is provided. Arcuate soft steel energy-absorbing extrusion plates 5 with convex surfaces facing alternately opposite directions are arranged in between, two ends of the arcuate soft steel energy-absorbing extrusion plates 5 are fixedly connected to the inner rotating steel plate 4 and the outer energy-absorbing steel plate 10, an SMA coordinated limit reset connecting wire 6 is arranged to pass through the midpoint of each arcuate soft steel energy-absorbing extrusion plate 5 in turn, and the convex surface of the arcuate soft steel energy-absorbing extrusion plate 5 is fixed with a fixing bolt 7, a main energy-absorbing cavity 8 is arranged between two arcuate soft steel energy-absorbing extrusion plates 5 with opposite and adjacent concave surfaces, a lightweight energy-absorbing material 9 is arranged between two arcuate soft steel energy-absorbing extrusion plates 5 with opposite and adjacent convex surfaces, and an upper sealing plate 12 and a lower sealing plate 13 are arranged above and below the multi-cavity energy-absorbing pier anti-collision structure except for the corresponding positions of the arcuate soft steel energy-absorbing extrusion plates 5 and the main energy-absorbing cavity 8.

[0017] The rotating energy dissipation hose 2, the inner rotating steel plate 4, the arc-shaped soft steel energy dissipation extrusion plate 5, and the outer energy dissipation steel plate 10 are made of low yield point energy dissipation steel plates.

[0018] The light energy-consuming material 9 is made of foamed aluminum.

[0019] The adjacent rotating energy dissipation hoses 2 are arranged tangentially to each other.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-cavity energy-absorbing bridge pier anti-collision structure, comprising a bridge pier (1), a rotating energy-absorbing hose (2), an auxiliary energy-absorbing cavity (3), an inner rotating steel plate (4), an arc-shaped soft steel energy-absorbing extrusion plate (5), an SMA coordinated limit reset connecting wire (6), a fixing bolt (7), a main energy-absorbing cavity (8), a light energy-absorbing material (9), an outer energy-absorbing steel plate (10), a soft protective layer (11), an upper sealing plate (12), and a lower sealing plate (13), characterized in that: The outer layer of the bridge pier (1) is provided with a circle of rotating energy dissipation hose (2), the interior of the rotating energy dissipation hose (2) is an auxiliary energy dissipation cavity (3), the outer layer of the circle of rotating energy dissipation hose (2) is provided with an inner rotating steel plate (4), the outer side of the inner rotating steel plate (4) is provided with an outer energy dissipation steel plate (10), the outer layer of the outer energy dissipation steel plate (10) is provided with a soft protective layer (11), and between the inner rotating steel plate (4) and the outer energy dissipation steel plate (10) are arranged arc-shaped soft steel energy dissipation extrusion plates (5) with convex surfaces facing in opposite directions alternately, and the two ends of the arc-shaped soft steel energy dissipation extrusion plates (5) are connected to the inner rotating steel plate (4) and the outer energy dissipation steel plate (10). 0) fixed connection, an SMA coordinated limit reset connection wire (6) is arranged to pass through the midpoint of each arc-shaped soft steel energy-absorbing extrusion plate (5) in sequence, and a fixing bolt (7) is used to fix the convex surface of the arc-shaped soft steel energy-absorbing extrusion plate (5), a main energy-absorbing cavity (8) is arranged between two arc-shaped soft steel energy-absorbing extrusion plates (5) whose concave surfaces are opposite and adjacent, and a lightweight energy-absorbing material (9) is arranged between two arc-shaped soft steel energy-absorbing extrusion plates (5) whose convex surfaces are opposite and adjacent, and an upper sealing plate (12) and a lower sealing plate (13) are arranged above and below the multi-cavity energy-absorbing bridge pier anti-collision structure except for the corresponding positions of the arc-shaped soft steel energy-absorbing extrusion plates (5) and the main energy-absorbing cavity (8); The rotating energy dissipation hose (2), the inner rotating steel plate (4), the arc-shaped soft steel energy dissipation extrusion plate (5), and the outer energy dissipation steel plate (10) are made of low yield point energy dissipation steel plates; The light energy-consuming material (9) is foamed aluminum.

2. According to claim 1, a multi-cavity energy-absorbing bridge pier anti-collision structure is characterized by: Adjacent rotating energy dissipation hoses (2) are arranged tangentially to each other.

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