TMD and TLD bidirectional hybrid damping control device of aqueduct structure

Abstract

The invention relates to a TMD and TLD bidirectional mixed damping control device of an aqueduct structure, which comprises a TMD damping tuned mass damper and a TLD large water tank, the TLD large water tank is composed of an aqueduct body and an aqueduct water body, the TMD damping tuned mass damper comprises an elastic element, an energy consumption element, angle steel, a grating and a lead-zinc rubber support, the elastic element is a cantilever beam, the energy consumption element is a cantilever beam, and the angle steel is an angle steel. The fixed end of the cantilever beam is horizontally fixed on the aqueduct wall, the free end of the cantilever beam is provided with a mass block, and the mass block is composed of a permanent magnet and an iron block attached to the permanent magnet; the energy consumption element is composed of a copper plate vertically fixed to the inner wall of the angle steel and a copper pipe horizontally fixed to the copper plate. The grating is arranged along the longitudinal direction of the aqueduct body; and the lead-zinc rubber support is mounted at the bottom of the groove pier. The device is compact in structure, damping and frequency parameters of the TMD are completely separated, quantitative adjustment can be achieved, and accurate simulation of the optimal damping parameters of the TMD in a structural model damping experiment is achieved.

Description

technical field [0001] The invention relates to the field of TMD and TLD hybrid shock resistance and shock absorption, in particular to a TMD and TLD two-way hybrid shock absorption control device of an aqueduct structure. Background technique [0002] The aqueduct is also called a water delivery bridge. The huge water body in the upper part of the aqueduct makes the structure "top-heavy", which is not good for earthquake resistance. In the anti-seismic of bridges, anti-seismic devices can be conveniently used to prolong the natural vibration period of the structure and dissipate seismic energy, thereby reducing the effect of earthquakes on the substructure and significantly improving the anti-seismic safety. The main feature of the aqueduct is the huge water body in the upper tank. Due to the low viscosity of the water body, under the longitudinal seismic excitation, the water body is vertically restrained and supported by the tank wall in the horizontal direction, and is ...

AI Technical Summary

Problems solved by technology

[0003] At present, when designing and constructing aqueducts, most of them only use TLD technology, and there is no very good solution to the frequency hopping phenomenon caused by TLD and the strong nonlinear characteristics of TLD shaking caused by breaking waves; resulting in aqueducts needing frequent It is costly and laborious to repair, and the safety is greatly reduced. Therefore, we have introduced a TMD and TLD two-way hybrid damping control device with an aqueduct structure.

Images