摘要
为更加合理地模拟地下结构多台阵振动台试验中场地的连续性,作者所在课题组研制了用于长线性地下结构振动台试验的连续体模型箱装置,该装置是由端部刚性箱、软连接箱及中间刚性箱组成的空间结构体系。运用有限元软件ABAQUS对其进行三维数值模拟,模态分析论证了可不与模型土发生共振的连续箱体构造的合理性,三维数值试验分析了该连续体模型箱在一致、非一致地震激励作用下的"边界效应"及工作中的稳定性。数值试验结果表明,所设计的连续体模型箱性能良好,为本次试验获得成功打下了坚实的基础。
In order to simulate a more reasonable site table test, a continuum model box used in long-term continuum model box is a spatial continuity of underground structures in multiple array shaking underground structural shaking table test is developed. This structure system composed of terminal rigid box, soft connecting box and interme- diate rigid box. The box three-dimensional model is simulated by using the finite element software ABAQUS , its ra- tionality is proved by using ABAQUS modal analysis that the proposed shape and structure of the continuum model box can avoid resonance with the model soil, A 3-D numerical simulation of the test is carried out to analyze the model box＂ border effect＂ and verify the continuum model box work stability under uniform and non-uniform seismic excitations. The numerical test results demonstrate that the performance of the continuum model box is very good. It lays a firm foundation for the success of the test.
出处
《地震工程与工程振动》
CSCD
北大核心
2013年第2期200-208,共9页
Earthquake Engineering and Engineering Dynamics
基金
国家重点基础研究发展计划(2011CB013600)
国家自然科学基金重点项目(51278017)
关键词
连续体模型箱
振动台试验
长线性地下结构
continuum model box
shaking table test
long-term underground structure
