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The Application of Viscous Damper in the Aseismatic Design of Cable-stayed Bridges

Author: ZhuHao
Tutor: HuQingAn
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Cable-stayed bridge Shock absorber design Viscous dampers Spectral analysis Time history analysis Two types of stability analysis
CLC: U441.3
Type: Master's thesis
Year: 2005
Downloads: 274
Quote: 11
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Abstract


Damping design of the cable-stayed bridge , the dominant ideology : the earthquake , the internal forces and displacements of the cable-stayed bridge is the smaller the better . But usually these two aspects are often conflicting . To the internal forces of reaction , often have to pay the cost of larger displacement as vice versa . In this paper, damping viscous dampers , and finite element analysis to verify its damping effect . This paper first introduces the calculation of the program ANSYS their unit characteristics , to discuss how to make cable-stayed bridge finite element model model as close as possible to the actual situation , and no damping measures were established using the cable stopper and adoption dampers of three cable-stayed bridge model . Then by modal analysis , spectral analysis and time history analysis as well as two types of stability analysis of the bridge towers , the damping effect of the Bi Lasuo limit and viscous damper . Finally , find the viscous damper displacement response of the structure and the internal force response while reducing the cable-stayed bridge seismic capacity and durability , in line with the cushioning design ideas .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge vibration and damping device
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