Novel lead core steel pipe U-shaped damper

Abstract

The invention provides a novel lead core steel pipe U-shaped damper and belongs to the technical field of civil engineering structure damping. The novel lead core steel pipe U-shaped damper is mainly composed of an upper cover board, a lower cover board, U-shaped metal boards, lead core filling steel pipes and connecting bolts. Each lead core filling steel pipe is composed of an outer-layer steel pipe, a lead core filling layer and an inner-layer steel pipe. Each U-shaped metal board is composed of an upper straight section, a middle arc section and a lower straight section. Each middle arc section is semicircular, and the outer diameter of each middle arc section is the same as that of the corresponding outer-layer steel pipe. Each lead core filling steel pipe comprises the outer-layer steel pipe, the lead core filling layer and the inner-layer steel pipe from outside to inside. The placing direction of energy consumption components between the upper cover board and the lower cover board is set in the manner that the axis direction of the arc section of each U-shaped metal board is parallel to the width direction of the upper cover board and the lower cover board; the lead core filling steel pipes are located between the left U-shaped metal board and the right U-shaped metal board and are tangent to the arc sections of the two U-shaped metal boards; and the axis direction of each lead core filling steel pipe is parallel to the width direction of the upper cover board and the lower cover board. By the adoption of the damper, the double energy consumption effects of the U-shaped steel boards and the lead core steel pipes are used so that the earthquake action of a bridge and a structure can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of shock absorption of civil engineering structures, and in particular relates to a novel lead-core steel pipe U-shaped damper arranged in a component between a bridge pier and a beam slab or in a building structure in bridge engineering. Background technique [0002] In earthquake-prone areas or areas with high seismic levels, seismic isolation systems, such as rubber isolation bearings and friction pendulum isolation bearings, are introduced into projects to reduce earthquake force. Although the seismic isolation system can effectively reduce the seismic force and protect beams, columns and other components from being damaged, due to the relatively small lateral stiffness of the seismic isolation system, large displacements are generated and the dissipation of seismic energy is limited. Therefore, in Installing dampers on structures with seismic isolation systems can effectively dissipate energy. [0003]...

AI Technical Summary

Problems solved by technology

However, due to certain limitations, these metal dampers cannot be used in bridge engineering

For example, the restoring force of the shear steel plate damper is small, and the damper in the form of anti-buckling support has poor ability to withstand large deformation, so they cannot be applied in bridge structures

Images