Concrete overpass bridge protection device and anti-collision reinforcing method thereof

Abstract

The invention discloses a concrete overpass bridge protection device and an anti-collision reinforcing method thereof. The concrete overpass bridge protection device structurally comprises studs and an anti-collision layer. The studs are fixed to the side faces and the bottom face of the concrete overpass bridge in a steel bar planting mode, and the studs are connected with the anti-collision layer and the concrete overpass bridge. The anti-collision reinforcing method is simple and convenient in process, damage to the overpass bridge is small, the original bearing capacity of the overpass bridge is prevented from being affected, work can be carried out under the condition that under-bridge traffic is not closed, and construction is rapid; and the anti-collision layer and the overpass bridge can be prevented from being disengaged, and under the condition of the same strength, the anti-collision layer is smaller in thickness and lighter in self weight, and the load amplification on the overpass bridge is very small. When collision occurs, the ultra-high performance concrete anti-collision layer is firstly collided, dissipation of impact kinetic energy can be increased, impact force can be effectively buffered, even under extreme collision, it can be guaranteed that a damaged part does not fall off, the overpass bridge does not collapse, and secondary accidents are avoided.

Description

technical field [0001] The invention relates to a protective device for a concrete cross-line bridge and an anti-collision reinforcement method thereof, which is used for the anti-collision reinforcement of the outermost side and the bottom of an ultra-high-performance concrete cross-line bridge, so as to prevent the bridge from being impacted and damaged by ultra-high and over-limit vehicles. Belongs to the field of civil engineering. Background technique [0002] Ultra-high performance concrete is a cement-based composite material with the main preparation technical characteristics of extremely low water-to-binder ratio, close packing of multi-component fine particles, and toughening of fine steel fibers. One of the sustainable super materials in the construction industry. Compared with traditional concrete, ultra-high performance concrete has great advantages in bearing capacity, structural design optimization, construction and installation speed, comprehensive cost, etc...

AI Technical Summary

Problems solved by technology

[0006] In summary, the existing anti-collision frame method or pier anti-collision reinforcement method is not suitable for span bridges

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