An elastic damping device used in the bridge direction

Abstract

The invention discloses an elastic shock-absorbing device used in the transverse direction of a bridge, which comprises a sliding plate, a pressure top plate, a rubber plate, a sealing pad, a pressure steel block, a guide groove, a base, a disc spring group, a guide rod, Stiffeners, pre-embedded blocks, protective covers and lateral closure plates, the outer side of the pressure top plate adopts an arc-shaped contact surface, and a sliding plate is attached to it; a rubber plate is installed between the pressure top plate and the pressure steel block, and a sealing pad seal; the guide groove is set on the inner side of the pressure steel block, which corresponds to the guide rod; the base is provided with a stiffening plate on the outside of the longitudinal bridge, and the base is fixed to the embedded block by bolts; the disc spring group is placed on the pressure steel block and Between the bases, the disc spring group is extruded by the compressed steel block along the guide rod to realize the horizontal shock absorption and self-resetting ability of the bridge; the lateral sealing plate seals the upper and lower sides of the base; cover. The invention can realize good elastic damping effect in the transverse bridge direction of the bridge, and can realize free sliding and horizontal rotation of the main girder along the longitudinal bridge direction at the device.

Description

technical field [0001] The invention relates to an elastic damping device used for bridges in the transverse direction. Background technique [0002] With the accelerated development of economic globalization and regional economic integration, the spans of bridges are getting larger and larger, and cable-stayed bridges and suspension bridges have become the preferred bridge types for long-span bridges. However, with the increase of the span, the construction environment faced by the bridge is also more complicated, and higher requirements are put forward for the structural performance under the action of strong wind, earthquake and temperature, especially when the main bridge is under the action of strong wind in the direction of the transverse bridge. The design requirements for beam force and displacement are higher. [0003] The traditional long-span cable-stayed bridge or suspension bridge mainly relies on the transverse wind-resistant bearing to meet the transverse mec...

AI Technical Summary

Problems solved by technology

Under the action of strong winds in the direction of the bridge, the impact of the main girder in the direction of the bridge directly transmits a large force to the bridge tower through the rigid contact between the towers and girders, which is very unfavorable to the force on the bottom of the tower and further increases the strength of the foundation. scale

At the same time, the main girder rotates in the horizontal direction, and the rigid constraints between the towers and girders restrict the free rotation of the main girder at the bridge tower, causing the main girder to generate a large transverse bending moment and local stress at the bridge tower. It is very unfavorable to the force of the main beam

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