CN201406662Y - A flexible energy-dissipating bridge pier anti-collision safety device with composite structure - Google Patents

Abstract

The utility model relates to the field of safety device technology in bridge engineering construction, particularly a flexible energy dissipation pier anti-collision safety device with the composite structure. The utility model can overcome the problem in the prior art that the safety of the vehicle, the pedestrians and the pier cannot be ensured when rigid collision is incurred on the vehicle andthe pier. Now the adopted technical scheme is that: the flexible energy dissipation pier anti-collision safety device with the composite structure comprises a steel anti-collision wall; the anti-collision wall is of a tubular shape and the vertical hollow section thereof takes a shape of rectangle; flexible energy dissipation material blocks clamped in the horizontal direction are uniformly distributed inside the anti-collision wall; springs are arranged among the flexible energy dissipation material blocks; the springs are horizontally clamped in the anti-collision wall; the bottom part of the anti-collision wall is a base steel plate and the base steel plate is provided with a ground anchor; the upper and lower ends inside the anti-collision wall are respectively provided with energy dissipation pieces. Compared with the prior art, the utility model has the advantages that: (1) the safety is high and the effect is excellent; (2) the structure is simple, the construction is easy andthe construction investment is less.

Description

A flexible energy-dissipating bridge pier anti-collision safety device with composite structure

technical field

The utility model relates to the technical field of safety protection devices in bridge engineering construction, in particular to a flexible energy-dissipating bridge pier anti-vehicle collision safety device with a composite structure.

Background technique

At present, the current situation of road traffic safety in our country is worrisome. Due to the increase in traffic volume, the contradiction between cars and bridges (especially overpass bridges) has become increasingly prominent. Accidents of cars hitting bridge piers often occur, and in severe cases, bridge piers will collapse. The car crash caused irreparable loss of life and property. The reason is that the direct impact of the car on the bridge pier is a rigid impact, and this process lacks energy dissipation, so the damage is extremely great.

In order to solve this problem, some anti-collision measures have been taken in the existing design, such as increasing the structural size of the bridge pier, or pouring the bottom of the pier column into a large-volume concrete solid block, or using steel pipe fences and other protection methods. To a certain extent, the safety of the bridge pier is guaranteed, but its aesthetics and applicability are not strong, and when the car hits the bridge pier, it is still a rigid collision. For cars or pedestrians, the safety hazard has not been eliminated or reduced, and it does not meet the safety design and human nature. design requirements.

Contents of the invention

The purpose of this utility model is to provide a flexible energy-dissipating bridge pier anti-collision safety device with a composite structure to overcome the problem in the prior art that it is difficult to ensure the safety of automobiles, pedestrians and bridge piers when vehicles and bridge piers undergo rigid collisions.

For overcoming the problems existing in the prior art, the technical solution of the utility model is:

A flexible energy-dissipating bridge pier anti-collision safety device with a composite structure, including a steel anti-collision wall, which is special in that: the anti-collision wall is cylindrical, and the interior of the anti-collision wall is a hollow structure. The vertical hollow section is rectangular, and there are evenly distributed elastic energy-dissipating material blocks in the horizontal direction, and springs are arranged between every four elastic energy-dissipating material blocks, and the springs are horizontally sandwiched in the anti-collision wall; the anti-collision wall The bottom of the base plate is a base plate, and the extension part of the base plate is pierced with anchor nails; the upper and lower ends of the inner side of the anti-collision wall are respectively horizontally provided with energy-dissipating parts.

The above-mentioned spring is sheathed with a flexible sleeve, and the flexible sleeve is clamped in the anti-collision wall. It can not only prevent sundries from being caught in the spring and affect the function of use, but also enhance the anti-collision function.

The horizontal section of the above-mentioned anti-collision wall is circular or runway-shaped. It has stronger anti-collision performance than rectangular section.

The elastic energy dissipation material block is made of modified polypropylene, modified polystyrene or high damping rubber. Due to its strong ability to recover and deform, even if it is hit, it can recover quickly and continue to use while dissipating the impact energy of the car.

The above-mentioned energy dissipating member is a closed belt-shaped structure arranged horizontally and made of soft plastic or rubber. Play the role of installation positioning and use limit.

Compared with the prior art, the utility model has the advantages of:

1) Compared with the conventional anti-collision measures, this safety device adopts a strong elastic energy dissipation device composed of flexible materials such as steel anti-collision walls, springs and elastic energy dissipation material blocks, and is installed between the device and the pier column. Set a certain safety reserve gap between them; while realizing the anti-car collision of the bridge pier, it can effectively avoid and reduce the damage of the car and the bridge pier, and ensure the safety of the car and the bridge pier;

2) The safety device has a simple structure, easy construction, and less engineering investment; and because it has a strong ability to restore deformation, it is easy to maintain and has good social and economic value.

Description of drawings

Fig. 1 is a structural diagram of the utility model;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is a B-B sectional view of Fig. 1 .

The reference signs are explained as follows:

1-energy dissipation piece, 2-anti-collision wall, 3-elastic energy dissipation material block, 4-flexible sleeve, 5-spring,

6-base plate, 7-anchor, 8-pier.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings.

Referring to Figures 1 to 3, a flexible energy-dissipating bridge pier anti-collision safety device with a composite structure includes a steel cylindrical anti-collision wall 2, and the interior of the anti-collision wall 2 is a hollow structure, and its vertical hollow section is rectangular , there are elastic energy-dissipating material blocks 3 sandwiched in the horizontal direction evenly distributed therein, the elastic energy-dissipating material blocks 3 are made of modified polypropylene, and springs 5 are arranged between every four elastic energy-dissipating material blocks 3, The spring 5 is sandwiched horizontally in the anti-collision wall 2 and the elastic energy-dissipating material block is arranged alternately with the spring 5; the bottom of the anti-collision wall 2 is a base steel plate 6, and an anchor 7 is pierced on the extension part of the base steel plate 6; The upper and lower ends of the inner side of the anti-collision wall 2 are respectively horizontally provided with energy-dissipating parts 1, and the outer cover of the spring 5 is provided with a flexible sleeve 4, and the flexible sleeve 4 is sandwiched in the anti-collision wall 2. The horizontal section is ring-shaped, and the energy dissipation element 1 is a horizontally arranged closed belt-shaped structure made of rubber, which plays the role of installation positioning and use limit.

During construction, the utility model is arranged around the pier 8, and the ring-shaped and cylindrical anti-collision wall 2 is arranged around the pier 8, and the energy dissipation part 1 is sandwiched between the anti-collision wall 2 and the pier 8 to form an effective distance; The anchors 7 arranged on the base steel plate 6 of the collision wall 2 form an integral body with the foundation ground.

Claims (5)

1. A flexible energy-dissipating bridge pier anti-collision safety device with a composite structure, comprising a steel anti-collision wall (2), characterized in that: the anti-collision wall (2) is cylindrical, and the anti-collision wall (2) The interior is a hollow structure, and its vertical hollow section is rectangular, and there are evenly distributed elastic energy-dissipating material blocks (3) sandwiched in the horizontal direction, and springs are arranged between every four elastic energy-dissipating material blocks (3) (5), the spring (5) is horizontally clamped in the anti-collision wall (2); the bottom of the anti-collision wall (2) is a base steel plate (6), and the extension part of the base steel plate (6) is pierced with Anchor nails (7); energy dissipating elements (1) are horizontally arranged on the upper and lower ends of the inner side of the anti-collision wall (2). 2. A flexible energy-dissipating bridge pier anti-collision safety device with composite structure according to claim 1, characterized in that: the spring (5) is sheathed with a flexible sleeve (4), and the flexible sleeve (4) sandwiched in the anti-collision wall (2). 3. A flexible energy-dissipating bridge pier anti-collision safety device with composite structure according to claim 2, characterized in that: the horizontal section of the anti-collision wall (2) is circular or track-shaped. 4. A flexible energy-dissipating bridge pier anti-collision safety device with composite structure according to claim 1, 2 or 3, characterized in that: the elastic energy-dissipating material block (3) is modified polypropylene or Made of modified polystyrene or high damping rubber. 5. A flexible energy-dissipating bridge pier anti-collision safety device with a composite structure according to claim 4, characterized in that: the energy-dissipating member (1) is a closed strip structure arranged horizontally, made of soft plastic or rubber.

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