摘要
根据某双塔三跨悬索桥的设计方案,利用结构分析软件SAP 2000建立该桥的有限元模型,并通过数值分析研究其抗震性能。通过对结果的分析,发现该桥自振频率较低,可以有效抑制S形竖向变形,同时,在地震作用下,该桥易产生较大的内力和位移,在设计中可以适当加入阻尼器削弱地震作用效果。
According to the design of a bridge with twin towers and three span suspensions,the finite element model of the bridge was established by using structural analysis software SAP 2000 and seismic performance was studied through numerical analysis. Based on the results of the analysis,we found a low natural frequency of the bridge,which can be effectively suppressed S-shaped vertical deformation,while under the earthquake,the bridge is easy to produce large internal forces and displacements in the design and dampers can be added appropriately to weaken the effect of the earthquake.
出处
《河南城建学院学报》
CAS
2015年第6期27-30,共4页
Journal of Henan University of Urban Construction
基金
南阳师范学院青年项目(15026)
关键词
悬索桥
有限元
抗震
自振特性
suspension bridge
finite element
earthquake
vibration characteristics
