阿志河悬索桥塔梁纵向连接方式与参数分析

摘要

为确定阿志河大桥合理的纵向连接方式,综合考虑各静动力分项作用效应及其组合,对纵向弹性约束和限位阻尼约束2种约束体系的参数进行研究.结果表明:对于阿志河大桥而言漂浮体系不是一种理想的结构体系;在静力反应中,弹性约束体系与限位阻尼约束体系都能有效减小梁端水平位移及塔底弯矩;在地震反应中,考虑到限位阻尼体系有更好的消能作用,推荐使用限位阻尼约束体系.%In order to determine the reasonable longitudinal connection mode of the Azhi river bridge,the parameters of the two constraint systems of longitudinal elastic constraint and limiting damping constraint were comprehensively studied by considering the static and dynamic effects and the combination of action effects.The results show that the floating system is not an ideal structural system for the Azhi river bridge.In the static respons e, the elastic constraint system and the limit damping constraint system can effectively reduce the horizontal displac ement and the bending moment at the bottom of tower.In the seismic response,considering the limit damping constraint sys tem has better energy dissipation function,it is recommended to use the limit damping constraint system.