CONTROL OF SEISMICALLY EXCITED CABLE-STAYED BRIDGE USING RESETTING SEMIACTIVE STIFFNESS DAMPERS
CONTROL OF SEISMICALLY EXCITED CABLE-STAYED BRIDGE USING RESETTING SEMIACTIVE STIFFNESS DAMPERS
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DOI：
10.1061/(asce)1084-0702(2001)6:6(376
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发表时间：
2001-12
影响因子：
3.6
通讯作者：
W. He;A. Agrawal;K. Mahmoud
中科院分区：
文献类型：
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作者：
W. He;A. Agrawal;K. Mahmoud
斜拉桥由于柔度大、质量小、固有阻尼小，容易出现大幅振动。因此，降低斜拉桥的地震或风致振动对斜拉桥的安全性和使用性能至关重要。在本文中，复位半主动刚度阻尼器（RSASD）是用来控制峰值动力响应的一个最近开发的基准问题的斜拉桥地震。基准斜拉桥的模型基于密苏里州吉拉多角正在建设的实际斜拉桥。本研究的主要目的是调查应用的保护装置，如半主动和被动阻尼器，在减少位移的甲板，以及在塔的基础上的基础剪力和力矩。在这项研究中，应用RSASD以及被动粘滞阻尼器和流体阻尼器的基准桥梁问题进行了研究。数值模拟是第二.
Cable-stayed bridges are prone to exhibit large amplitude oscillations because of their large flexibility, small mass, and small inherent damping. Hence, the reduction of seismic or wind-induced vibration of cable-stayed bridges is vital for their safety and serviceability. In this paper, a resetting semiactive stiffness damper (RSASD) is used to control the peak dynamic response of a recently developed benchmark problem on a cable-stayed bridge subject to earthquakes. The model of the benchmark cable-stayed bridge is based on the actual cable-stayed bridge that is under construction on Cape Girardeau, Mo. The prime aim of this study is to investigate the application of protective devices, such as semiactive and passive dampers, in reducing the displacement of the deck as well as base shear and moments at the base of the towers. In this research, the applications of the RSASD as well as passive viscous and fluid dampers to the benchmark bridge problem have been investigated. Numerical simulations are cond...