An Experimental System for Realizing Compression-Bending Boundary Conditions under Lateral Impact

Abstract

The invention discloses an experimental system for realizing bending boundary conditions under the action of lateral impact, comprising a vertical impact device, an axial loading device, a clamping device and a test piece; the vertical impact device comprises a steel plate fixed on the ground. Frame (1), the top beam of the steel frame (1) is provided with a hoist, the hoist is connected to the drop weight through a sling and a decoupling mechanism, and the drop weight is composed of a hammer body (2) and a detachable hammer head (3) ), two rails (4) are symmetrically arranged on both sides of the steel frame (1), and the hammer body (2) is located between the two rails (4). The system of the invention has reasonable design, strong applicability, convenient assembly, convenient component replacement, and can realize the bending boundary condition under the action of lateral impact.

Description

technical field [0001] The invention belongs to the technical field of component disaster simulation devices, relates to an application in a self-weight drop weight test, and in particular is an experimental system for realizing compression-bending boundary conditions under the action of lateral impact. Background technique [0002] In recent years, in order to meet traffic travel and improve people's quality of life, my country has vigorously developed bridge projects. More and more viaducts have appeared in cities, and the incidents of viaduct piers being hit by vehicles have also occurred. According to statistics, Beijing's More than 50% of the viaduct piers have been hit by super-high vehicles, and ships hit the bridge piers from time to time. At present, the research on the anti-collision performance of bridge piers mainly focuses on the case of axial compression, but most of the columns or bridge piers in the actual structure are flexural components. During the impact p...

AI Technical Summary

Problems solved by technology

At present, the research on the anti-collision performance of bridge piers is mainly concentrated on the condition of axial compression, but most of the columns or piers in the actual structure are compression-bending members. During the impact process, the anti-collision performance of the members is affected by the initial bending moment and deflection, which The force and deformation mechanism are significantly different from those of axially compressed members

Images