公路车辆荷载诱发毗邻建筑垂向振动数值分析

Vertical coupling random vibration is generated between highway traffic load and supporting structure due to road surface height roughness, then induced the corresponding vibration response of adjacent building. Road supporting structure was simulated using Kirchhoff plate on the longitudinal infinite Kelvin foundation, and the 1/2 vehicle model and vibrated building were coupled into a unified finite element numerical model. The infinite long road surface was regarded as periodic chain-type substructure. A typical model of road surface substructure was built and two-dimensional moving element of vertical coupling random vibration was formulated by proving the symplectic orthogonal characteristic of damping chain-type substructure. Based on pseudo excitation method, vertical dynamic response of the unified model of vibration source-supporting structure-vibrated structure was analysed.