【摘 要】
：
为探究由钢阻尼器与抗风支座组成的横向减震体系关键参数对斜拉桥横向地震响应的影响,以某高矮塔斜拉桥为例,基于结构内力与位移响应相平衡的原则,运用正交试验设计法设定参
【机 构】
：
长安大学陕西省公路桥梁与隧道重点实验室,陕西西安710064
论文部分内容阅读
为探究由钢阻尼器与抗风支座组成的横向减震体系关键参数对斜拉桥横向地震响应的影响,以某高矮塔斜拉桥为例,基于结构内力与位移响应相平衡的原则,运用正交试验设计法设定参数联合优化的分析工况,分别以结构内力与位移响应、钢阻尼器耗能为优化指标,探究算例中减震体系关键参数钢阻尼器屈服力及抗风支座初始间隙对优化指标的影响.结果表明:辅助墩内力及高塔侧边跨主梁梁端位移响应的控制因子具有显著的参数耦合效应,参数优化时需联合考虑;在墩台设置钢阻尼器可显著降低辅助墩内力及梁端位移响应,但不能有效降低桥塔内力响应.
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