Viscous damper and bridge with viscous dampers

Abstract

The invention discloses a viscous damper and a bridge with viscous dampers, and relates to the field of bridge design. The viscous damper comprises a body, a piston rod and a piston. A cavity is formed in the body and filled with a damping medium, one end of the piston rod stretches into the cavity, the piston is arranged at the end, stretching into the cavity, of the piston rod and divides the cavity into a first chamber and a second chamber, and at least one channel is formed between the first chamber and the second chamber; at least one one-way channel is further formed between the first chamber and the second chamber, and the one-way channels are opened when the viscous damper bears tension and are closed when the viscous damper bears pressure. According to the viscous damper, one-way circulation of the first chamber and the second chamber can be achieved, one-way acting force is generated on an object, and then bridge abutments only bear thrust of a girder and do not bear tension, so that the stress state of the bridge abutments is greatly improved, damage to the bridge abutments is not likely to be caused, the stability of the bridge structure is improved, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the field of bridge design, in particular to a viscous damper and a bridge equipped with the viscous damper. Background technique [0002] For long-span bridges in mountainous areas, longitudinal dampers are usually installed at the positions of the middle towers and piers to form a longitudinal full-floating restraint system, so that the girder body can move freely in the longitudinal direction under slow loads, and the longitudinal dampers under faster loads Fixed, but the middle towers and piers of long-span bridges in mountainous areas are usually high, which will cause the towers and piers to bear huge longitudinal bending moments, greatly increase the difficulty of design and construction of towers and piers, and increase the investment in engineering costs. [0003] In order to stabilize the structure of long-span bridges in mountainous areas, longitudinal dampers are usually arranged on both sides of the girder end, whi...

AI Technical Summary

Problems solved by technology

However, the abutment structure can bear the thrust, but it cannot withstand the huge tensile force under the dynamic load. Therefore, this kind of damper makes the abutment easy to damage, poor in structural stability, difficult to repair, and increases maintenance costs

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