THEORY FOR VEHICLE-BRIDGE COUPLING VIBRATION OF STEEL-CONCRETE COMPOSITE GIRDERS WITH HPC PRECAST PANELS
This article simplifies a vehicle to an in-plane three-axis vehicle model with five degrees of freedom.Aiming at simulating the dynamic characteristics of the steel-concrete composite girder (SCCG) with high-performance concrete (HPC) precast panels connected by group studs, the differential equations of vehicle and girder vibration are established by considering mass, stiffness and damping of the different vehicle axles and road surface roughness of the vehicle-bridge coupling model.The theoretical method of analyzing the SCCG with HPC precast panels is proposed by considering compatibility conditions between wheels and panels.At the same time, combining a theoretical model of the vehicle with a FEM numerical model of the SCCG with slippage between steel beams and HPC precast panels, the corresponding analysis application software is programmed on Matlab and ANSYS platform.Compared with the existing results gained by the coupling vehicle-bridge vibration effects of a simply supported beam bridge without slippage, the correctness and validity of the proposed method is verified.On this basis, comparison of dynamic responses of a simply supported SCCG with and without slippage is made, and the results indicate that the vertical deflection and the principal stress with slip effect are increased by 6.83% and 4.44% than that without slip effect.So, when calculating the dynamic response of SCCG with HPC precast panels connected by group studs, slip effects between concrete panels and steel girders are not negligible.
Bridge engineering Steel-concrete composite girders High-performance concrete precast panels Bridge and vehicle coupling vibration Analysis
Yiqiang Xiang Zheng Qiu Sheng Zhu Bishnu Gupt Gautam
College of Civil Engineering and Architecture, Zhejiang University, China ,Cyrus Tang Center for Sen College of Civil Engineering and Architecture, Zhejiang University, China
国际会议
福州
英文
624-640
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）