Combined protective pier for concrete viaduct

Abstract

The invention provides a combined protective pier for a concrete viaduct and belongs to the field of road-bridge traffic safety facilities. The combined protective pier comprises a soft cushion layer,a protective bent sleeve plate, a cushioning bent sleeve plate, an impact-resistant bent sleeve plate, a protective bent plate base plate, a cushioning bent plate base plate and the like. A pier column and the protective bent sleeve plate are connected through a plurality of supporting connecting rods. A plurality of compressive deformation-resistant energy-absorbing inner-layer assemblies are arranged between the protective bent sleeve plate and the cushioning bent sleeve plate; a plurality of anti-compression-deformation energy-absorbing outer-layer assemblies are arranged between the cushioning bent sleeve plate and the impact-resistant bent sleeve plate, connecting bearing beads are arranged between the soft cushion layer and the impact-resistant bent sleeve plate, cushioning springsare arranged between the soft cushion layer and outer-layer connecting nails, and shear thickening glue filling layers are arranged in the rest spaces of the soft cushion layer and the impact-resistant bent sleeve plate. The damping effect and ductility can be well improved while large deformation can be borne, and impact collision energy can be fully dissipated when a vehicle body collides with apier main body structure.

Description

technical field [0001] The invention belongs to the field of road and bridge traffic safety facilities, in particular to a composite protective pier for concrete viaducts. Background technique [0002] After the development of cities in our country, the traffic is crowded, the buildings are dense, and the streets are difficult to widen. Therefore, viaducts have become a new development trend. Due to the large-scale construction of viaducts in recent years, countless large concrete pillars have been erected in the sky of the city. It also brings great inconvenience. After the development of the city, the traffic is crowded, the buildings are dense, and the streets are difficult to widen, so the viaduct has become a new development trend. The large concrete pillar also brings great inconvenience to the traffic. According to the investigation and analysis of the Ministry of Communications, in traffic accidents, due to the restriction of sight at night, the accident rate of vehi...

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Problems solved by technology

[0002] After the development of cities in our country, the traffic is crowded, the buildings are dense, and the streets are difficult to widen. Therefore, viaducts have become a new development trend. Due to the large-scale construction of viaducts in recent years, countless large concrete pillars have been erected in the sky of the city. It also brings great inconvenience. After the development of the city, the traffic is crowded, the buildings are dense, and the streets are difficult to widen, so the viaduct has become a new development trend. The large concrete pillar also brings great inconvenience to the traffic. According to the investigation and analysis of the Ministry of Communications, in traffic accidents, due to the restriction of sight at night, the accident rate of vehicles colliding with the pier is not rare. Therefore, how to solve the problem of vehicle collision with the pier The problem has become an urgent problem to be solved at present. The anti-collision bridge pier is a very common road and bridge traffic safety facility. It has been widely used in some dangerous areas. High-performance anti-collision bridge piers or bridge pier anti-collision installation kits can greatly buffer the huge impact force generated by the impact, thereby greatly reducing the serious consequences of traffic collision accidents. Under the action of huge impact force, it is strong, resistant Anti-collision piers with strong impact ability and good cushioning performance are very necessary road and bridge traffic safety infrastructure. The research on anti-collision of bridge piers in China started relatively late, and the attention was not paid enough in the early stage. Many anti-collision design theories and calculation methods refer to foreign countries. Therefore, it is particularly critical to develop and design anti-collision facilities that can effectively absorb and buffer the impact force of objects such as the car body on the pier, so as to achieve the purpose of not damaging the pier and the car body. All kinds of collisions and other accidents are often caused by The huge impact force generated by the impact causes casualties and economic losses. In order to control the loss caused by the impact to the greatest extent, it is necessary to develop anti-collision bridge piers with better anti-collision effects. In some road areas with bridges, the anti-collision effect is better. Good anti-collision bridge piers and other safety anti-collision series projects are very necessary, which can clearly control the consequences of traffic accidents caused by collisions, and can effectively reduce casualties and economic losses

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