Research on Transverse Damping System of Large Span Three-tower Self-anchored Suspension Bridge
Taking a suspension bridge under construction as the engineering background,a three-dimensional finite element model of the whole bridge is established by using the large-scale finite element calculation software SAP2000.The damping characteristics of the lateral combined damping system of sliding bearing+steel damper are studied.The appropriate steel damper parameters are selected for numerical simulation analysis.Compared with the lateral fixed constraint system,the lateral combined damping system given in this paper can significantly reduce the seismic demand of each pier and tower foundation,and can reduce the shear force and bending moment of the key sections of each pier and tower to different degrees,and can effectively control the relative displacement of piers and beams.Therefore,the transverse combined constraint system proposed in this paper is more reasonable,which can provide reference for the shock absorption of the same type of bridge.
suspension bridgemetallic dampertransverse combination damping systemfinite element analysis
NETL
NSTL
万方数据
