Transverse bridge direction and vertical direction bidirectional earthquake-resistant stop block structure suitable for bridge

Abstract

The invention relates to the technical field of bridge earthquake prevention, and particularly relates to a transverse bridge direction and vertical direction bidirectional earthquake-resistant stop block structure suitable for a bridge. The structure comprises rectangular concrete stop blocks arranged on the two sides of a bridge main body, an embedded circular truncated cone composite column, acarbon steel spring, a middle steel stop block, a suspension rib and an alloy steel spring. The inner wall of each rectangular concrete stop block is connected with the outer wall of the middle steelstop block through the carbon steel spring and the embedded circular truncated cone composite column; a square digging hole is formed in the inner wall of the middle rigid stop block, the suspension rib is fixed to the lower portion of the outer wall of the bridge main body through a main beam pre-buried steel plate, and the other end of the suspension rib is inserted into the square digging hole;and the middle steel stop block is connected with the bridge main body through the alloy steel spring. According to the invention, the bridge displacement of the bridge in the transverse bridge direction and the vertical bridge direction is limited to a greater extent, and parts of earthquake energy in the transverse bridge direction is consumed so that the bridge piers are prevented from being damaged.

Description

technical field [0001] The invention relates to the field of anti-seismic technology of bridges, in particular to a bidirectional anti-seismic stopper structure suitable for bridges in the transverse direction and vertical direction. [0002] technical background [0003] The construction and maintenance of bridges, with the further expansion of the traffic system, in order to cope with more harsh terrain, save land resources, protect the environment, and improve the utilization of space, the use of bridges is more common. The length is 39.778 million meters. In 2019 alone, 21,900 bridges were added nationwide. By 2020, the number of bridges will continue to increase. The extensive use of bridges also requires the development and innovation of corresponding seismic technology. First of all, my country is located in the ring In the Pacific Volcanic Seismic Belt and the Eurasian Seismic Belt, medium and large-scale earthquakes have some chances to occur, and the damage to bridges...

AI Technical Summary

Problems solved by technology

Seismic waves will cause a large vertical displacement of the bridge, which will cause the upper beam to break away from the support, not only causing warping damage to the bridge, but also causing severe vertical collision between the support and the beam

All of the above types of bridge damage are difficult to repair

[0004] In view of the fact that the current mainstream of bridges is to set concrete anti-seismic blocks in the direction of the bridge, it is impossible to effectively control the force generated by the rigid collision from being transmitted to the pier and damage to the bottom of the pier, and the excessive displacement of the bridge in the vertical and along the bridge direction leads to Falling beams cause damage to the support

Due to the complex and changeable displacement and force of the bridge caused by the earthquake, there is no way to ensure that the main body of the bridge can maintain relative integrity during the earthquake, and most of the bridge damage caused by the earthquake is located in the horizontal and vertical directions of the bridge. Towards

Therefore, it is necessary to develop a device that can limit both the horizontal and vertical directions of the bridge, and convert the rigid collision that causes bridge damage into an elastic-plastic collision that can consume part of the energy, so as to solve the problem of bridge and movable support. The damage of the support caused by the large relative displacement of the seat, and the irreparable damage of the bridge pier caused by the rigid collision between the main body of the bridge and the block

Images