【摘要】 以某自锚式悬索桥为例,建立了空间杆系有限元计算模型,研究了该桥在隔震前和隔震后的动力特性及地震响应特征.研究结果表明,隔震后结构自振周期明显增大,主塔处桥墩和加劲梁的内力减震效果非常显著,同时伴随着吊索索力增大.文章研究成果可供工程实践参考.更多还原

【Abstract】 Taking a self-anchored suspension bridge as an example,a spatial finite element model with beam element is established in this paper.Seismic response and dynamic behavior of the bridge before isolation and after isolation are studied.A series of results can be obtained from this study: The natural vibration period of the bridge increases after isolation,and the effect of vibration reduction of the main pier and stiffening grider is obvious,however,the tension force of main cable increases after isolation.The study results of the paper may be used as a reference to engineer practice.更多还原