独塔等跨自锚式悬索桥动力特性研究

Study of dynamic characteristics of self anchored suspension bridge with single-tower and equal-span

以某独塔等跨自锚式悬索桥为依托工程,其桥跨布置为(50+350+350+50)m,利用Midas Civil有限元分析软件建立全桥三维模型,通过计算分析该桥梁不同结构体系下的动力特性,并对悬索桥四大主要构件(桥塔、主梁、主缆、吊杆)采取不同刚度倍率下的动力特性进行对比,为同类型桥梁的建设提供依据。

Based on a self-anchored suspension bridge with single tower and other spans,the bridge span arrangement is(50+350+350+50)m,and the threedimensional model of the whole bridge is established by using Midas Civil finite element analysis software.The self-vibration force characteristics of the bridge under different structural systems are calculated and analyzed,and the dynamic characteristics of the four main components of the suspension bridge(tower,main beam,main cable and suspender)under different stiffness ratios are compared.Through the analysis of its dynamic characteristics,provide the basis for the construction of the same type of bridge.