Abstract
Vehicle–pavement coupling systems may produce strong vertical random vibration due to the road surface unevenness and then further induce random vibration of adjacent buildings. It is usually difficult to numerical analyze efficiently as the model precision and calculation scale of complicated random analysis. In this article, a longitudinal infinite Kirchhoff plate with Kelvin foundation is employed to model the pavement system, and by proving the symplectic orthogonal characteristic for the damped chain substructure, the infinitely long road surface is regarded as a periodic chain-type substructure, the model is accurate, and computation scale is reduced. Models of a half vehicle and an adjacent building are coupled to the plate to produce a unified finite element model. The plate element stiffness matrix is formulated in the coordinate moving with the load, a typical model of road substructure is built, and the two-dimensional moving element method of vertical coupling random vibration is formulated, and then the time-varying non-stationary random vibration may be transformed into time-invariant stationary system. Using the pseudo-excitation method, vertical dynamic responses of the unified model of vibration source, supporting structure, and vibrated structure are analyzed. The computation efficiency of this method is numerically justified and some vibration influence rules of vehicle to building are drawn.
Highlights
Complex urban transportation may have harmful influences on the surrounding residents and buildings, principally the environmental random vibrations induced by vehicle–pavement–structure coupling
Vehicle–pavement coupling vibrations induced by road surface irregularity are essentially random
This kind of coupled random vibration can induce the secondary vibrations of adjacent buildings by impact load spreading through the pavement structure, foundation, and the surrounding strata
Summary
Complex urban transportation may have harmful influences on the surrounding residents and buildings, principally the environmental random vibrations induced by vehicle–pavement–structure coupling. Keywords Environmental vibration, chain substructure, pseudo-excitation method, moving element method, adjacent building
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