Abstract：Based on the theory of vehicle-track coupled dynamics, a 3-D dynamic model for a train-track of steel spring floating slab coupled system was established under the connection action of shear hinges of floating slab. The floating slab was assumed to be an elastic thin plate. Vertical and lateral constraint actions of shear hinges on floating slab were considered simultaneously to analyze effects of shear hinges on dynamic behavior of a train-track coupled system under conditions of straight railway line and curve one. The results showed that shear hinges of floating slab can obviously improve wheel-rail interaction and release impacts of wheel and rail’s lateral and vertical forces during train passing gaps between two adjacent floating slabs; subway train vibration can be improved by shear hinges to a certain extent, effects of shear hinges on wheel-pair vibration are the maximum, those on frame vibration are the second, and those on car body are the minimum; under the condition of straight railway line, shear hinges can obviously improve forces exerted on fasteners at both ends of floating slab, and under the condition of curve one, shear hinges have smaller effects on fasteners’ lateral forces while they can more obviously improve floating slab’s lateral displacements and rotary angles in horizontal plane as well as lateral forces of steel springs.
收稿日期: 2017-12-28
出版日期: 2019-05-28
引用本文:
杨建近，朱胜阳，翟婉明. 浮置板剪力铰对列车-轨道耦合系统动力学行为的影响[J]. 振动与冲击, 2019, 38(11): 1-8.
YANG Jianjin, ZHU Shengyang, ZHAI Wanming. Effects of shear hinges of floating slab on dynamic behavior of a train-track coupled system. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(11): 1-8.
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