移动荷载作用下桥头搭板动力响应分析

将桥头搭板视作粘弹性地基上四边简支的各向同性矩形板，用变分法对移动车辆荷载作用下搭板的动力响应进行了分析，并讨论了荷载的载重、荷载的横向位置、车速以及搭板的长度、宽度、厚度对板顶位移和板底最大弯拉应力的影响。

Dynamic Response Analysis of Approach Slab under Moving Loads

Simplifying the approach slab as an elastic isotropy rectangular plate simply supported along its four edges and lying on the Winkler viscoelastic foundation, the dynamic response of the approach slab un der moving vehicle were analyzed by calculus variation. Moreover, this paper discussed the influences on the distance at the top of the plate and the maximum bending tensile stress at the bottom of the plate of some pa rameters such as load weight, transverse distribution of the vehicle, speed, and the length, width and thick ness of the approach slab. The results could provide theoretical foundation for the structural design of the ap proach slab under moving load.