STUDY ON THE THREE-DIMENSIONAL SOIL MODEL AND ITS DYNAMIC RESPONSE UNDER IMPACT LOAD

被引：0

作者：

Fang, Zhen ^{[1
]}

Zhang, Nan ^{[1
]}

Xia, He ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China

来源：

KEY TECHNOLOGIES OF RAILWAY ENGINEERING - HIGH SPEED RAILWAY, HEAVY HAUL RAILWAY AND URBAN RAIL TRANSIT | 2010年

关键词：

impact load; incompatible element; element stiffness matrix; three-dimensional soil model; dynamic calculation; BRICK program; PROPAGATION;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In order to research on the influence of environmental vibration induced by rail transportation, the foundation soil around rail is taken as the research object and train loads can be considered as a series points vibration sources. Like Duhamel integral, analysis of single impact is the basic work of the whole study on sustained train loads. It is focused on the method of calculation, and the three-dimensional finite element soil model is adopted just as an example. Stiffness matrix of three-dimensional incompatible element with 8 nodes is deduced and applied in BRICK dynamic calculation program. Response of soil under single impact load is analyzed and vibration wave propagation and attenuation law is verified by results. The method by BRICK is feasible and provides a kind of way for research on assessment about environmental vibration induced by train loads and reduction on shock and noise.

引用

页码：550 / 554

页数：5

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