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.
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 gilder 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.
出处
《广州大学学报（自然科学版）》
CAS
2010年第2期72-76,共5页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金项目(50978062)
广东省自然科学基金项目(9151065004000002)资助
关键词
自锚式悬索桥
动力特性
地震响应
反应谱
隔震支座
self-anchored suspension bridge
dynamic behavior
seismic response
response spectrum
isolation bearing
