Shock-absorbing device for bridge security belt connection system

Abstract

The invention provides a shock-absorbing device for a bridge security belt connection system, belonging to the field of bridge building. The cross section of an upper sealing board is arc-shaped; the bottom parts at the both sides of the upper sealing board and a lower bottom board are fixed through a designed inclined angle, so as to form a vertical face closing device; a static roller bearing platform is fixedly arranged inside the vertical face closing device of the lower bottom board; the upper part and the lower part of a separation board are respectively connected with the upper sealing board and the static roller bearing platform; locking rollers are symmetrically arranged on the static roller bearing platform; the static roller bearing platform is separated to the both sides by the separation board; one ends of two safety belts symmetrical to the separation board are connected with a beam body; the other ends of the two safety belts are free ends and are located on the lower bottom board, pass through a hole reserved on the upper sealing board to stretch, and are symmetrically arranged at the both sides of the separation board; each safety belt is provided with a yield control unit with a reconcilable tonnage; and axes of the locking rollers are vertical with the safety belts. The invention provides the novel security belt connection device for a large-tonnage continuous girder bridge, which is activated by earthquake motion acceleration and has the advantages of low manufacturing cost, good durability, and convenience for examination and maintenance.

Description

technical field [0001] The invention relates to a shock absorbing device for a bridge safety belt connection system, which is suitable for new construction or seismic reinforcement of railway bridges, highway bridges, urban viaducts and various large-scale continuous beam structures, and can make the structures cooperatively bear stress under the action of sudden earthquakes , improving the overall seismic performance of the structure, belonging to the field of bridge construction. Background technique [0002] In order to reduce the seismic response of the bridge and improve the seismic performance of the bridge, shock absorbing measures such as shock-absorbing and isolation bearings and viscous dampers are usually used for bridges, such as lead rubber bearings and viscous dampers. However, the current conventional schemes do not change the state that the fixed piers of the bridge are independently loaded, and the existing seismic capacity of other sliding piers has not bee...

AI Technical Summary

Problems solved by technology

In recent years, some scholars have proposed the Lock-up device. From a technical point of view, it can realize the coordinated force bearing of each pier. However, this device is not only expensive, but also complicated to check and maintain later, and the operation and maintenance costs are high. Therefore, it is used in bridges. Less examples of earthquake resistance

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