摘要
以一种简化的方法研究高架轻轨列车对桥梁的动力冲击作用与周围地基的振动效应，首先建立了二维的车─桥系统动力相互作用模型，通过模拟分析求得列车运行时作用在桥墩上的列车振动荷载，然后再采用＂桥墩─基础─地基＂的二维共同作用模型，计算通过桥墩并垂直于线路的横断面上的地基和地面的振动特性。并以一实际高架轻轨系统为实例，研究了平基和桩基两种情况下高架轻轨列车对周围地基振动的影响。
In this paper,a simplified method is proposed to study the dynamic impacts of a moving light-rail train on viaduct bridge and the vibration effects of the surrounding bases. The 2-D dynamic model of train-bridge'system is established,by which the dynamic loads on the piers by the moving train are obtained.The 2-D dynamic model of pier-foundation-base'system is then adopted to analyse the vibration responses of the surrounding bases and the foundations. By a real example,the influences are studied of the train-bridge system on surrounding bases in shallow and pile foundations.
出处
《北方交通大学学报》
CSCD
北大核心
1994年第1期1-8,共8页
Journal of Northern Jiaotong University
关键词
轻轨列车
高架桥
地基
动力响应
ss:light-rail train
viaduct bridge
base
dynamic system response
