Investigation the effect of nonlinear viscous dampers on dynamic response rebate of cablestayed bridges under near and far-field earthquakes
Publish place: International Conference on civil engineering, architecture and urban development management in Iran
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CAUM02_074
تاریخ نمایه سازی: 7 دی 1398
Abstract:
Nowadays, considering to the effective role of passive control systems in reducing seismic demand and improving the performance of structures, the most important approaches to improving structures are increasing energy absorption and reducing seismic demand using methods such as seismic isolation, reduction of structural massand systems energy dissipation. Considering the types of bridges damaged in past earthquakes, which in most cases were due to the elastic bridge design philosophy, inthis paper, along with the study of the effect of viscous damper on seismic correction of cable bridges under near-earthquake earthquakes, the effect of nonlinear modelingthe cables and the viscous damper on the Świętokrzyski cable-stayed bridge in Poland were modeled in the CSI Bridge-V20.2, bridge-specialized software. The resultsindicate a 50 to 60 percent reduction in the dynamic response of the bridge using a nonlinear viscoelastic damper. Also, due to different results of the damper in differentlocations of the bridge, the distance between the deck and the bridge bases is a suitable and optimal location for reducing the seismic response and increasing the performance level of the cable bridge.
Authors
A Amidfar
Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
F Emami
Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
M.R Mansouri
Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran