摘要
研究轨道交通高架桥系统引起的地基振动响应及有效的减振措施.首先通过高架桥Timoshenko梁模型的离散算法,计算多个移动荷载作用下柱支座处的反力,然后把这个力作为柱和下部结构有限元模型的输入力,从而得到地基的振动响应,同时对比分析明沟隔振、减振措施的效果.
In railway system, the upper viaduct is modeled with 'Timoshenko beam', while the column and the lower parts are modeled with finite element method. By the discrete calculation, the support counterforce of 'Timoshenko beam' subjected to a few moving loads is worked out. Then each counterforce is used as an input force in the finite element models. As a result, the dynamic response of ground with and without open drain can be calculated and compared.
