Bridge anti-seismic damper structure with rotational friction energy dissipation

Abstract

The invention discloses a bridge anti-seismic damper structure with rotational friction energy dissipation. The bridge anti-seismic damper structure comprises a limiting piece, a friction rod, a friction ball, an air cylinder, a piston rod of the air cylinder and a fixed hinge support; the limiting piece is fixed above the side wall of a pier, and the friction rod is fixed in the limiting piece, penetrates through the friction ball and is connected with the friction ball; the bottom of the piston rod is connected with the friction ball, and one section of the top of the piston rod is located in the air cylinder; the top end of the air cylinder is hinged to the fixed hinge support; and the fixed hinge support is fixed at the bottom of a beam body. The bridge anti-seismic damper structure is reasonable in design; the friction ball and the friction rod are arranged, and earthquake energy is consumed by fully utilizing rotational friction caused by beam body displacement; and the air cylinder and the piston rod are arranged, so vibration energy of the bridge during earthquakes is absorbed through damping generated by compressed flowing of air, and relative large displacement of the bridge body and the bridge pier is limited. The bridge anti-seismic damper structure is simple in structure, convenient to construct and low in cost.

Description

technical field [0001] The invention belongs to the field of bridge anti-seismic technology, and in particular relates to a bridge anti-seismic damper structure with rotational friction energy consumption. Background technique [0002] Bridges are one of the country's basic constructions and play a pivotal role in transportation and national economic development. In recent years, with the rapid development of my country's social economy and technology and the continuous acceleration of urbanization, the demand for both river-crossing bridges and urban viaducts has increased, and many bridge construction projects have appeared one after another. The numbers and investments are growing. As an important transportation hub, the safety of the bridge is the prerequisite for the function of the bridge. However, under the influence of earthquakes, bridges may be severely damaged or even collapsed, which not only causes huge economic losses, but also threatens people's lives and bri...

AI Technical Summary

Problems solved by technology

These connecting devices mainly rely on the damping produced by the device itself on the beam body during the earthquake to hinder the relative displacement of the beam body, thereby playing a position-limiting role. However, due to the large tensile stiffness, a large seismic force is transmitted, not only for The device itself caused too much damage and would exert too much damping force on the bridge, thus causing too much damage to the bridge

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