Abstract

Info

Title:: Research on Characteristics of Cable-beam Vibration of Railway Cable-stayed Bridge Under Train Load

Author(s):: WANG Tao; SHEN Rui-li; School of Civil Engineering, Southwest Jiaotong University

Keywords:: cable-stayed bridge; cable; cable-beam vibration; finite element method; train; load

Abstract:: In order to investigate cable-beam vibration in large span railway cable-stayed bridge, the cable dynamic element of finite element was developed based on the nonlinear vibration theory of cable. This element was an ordinary link element when static analysis, it could calculate the partial natural frequency of the cable in cable-stayed bridge in dynamic characteristic analysis. Meanwhile, the interaction between cables nonlinear vibration and the global bridge vibration in dynamic time history analysis was calculated. A computing program was developed, and the finite element model of a large span railway cable-stayed bridge was built, the stayed cables were simulated by cable dynamic element. Finally, the characteristic of cable-beam vibration when train passing the cable-stayed bridge was investigated by the program. The results show that for large span railway cable-stayed bridge, cable-beam vibration cannot cause large vibration of the cable when train passing the cable-stayed bridge in the range of design speed.