摘要
通过对1/2大比例模型的试验与仿真分析,研究了结构-箱基础-土体系的动力反应.将实测基频结果与基于刚性地基的仿真分析结果对比,发现实测结果小于有限元结果;但将实测基频结果与考虑相互作用的仿真分析结果对比,发现实测结果与仿真分析结果吻合,这说明土-箱基础-结构相互作用改变了结构体系的动力特性,使结构体系的自振周期延长,同时也验证了仿真分析的有效性.
This paper studied the dynamic response of the structure-box foundation-soil system through test and Finite Element（FE） analysis of 1/2 large scale model. By comparing the basic frequencies of test and FE analysis, it was found that the test results were smaller than the results of FIE analysis based on the theory of rigid foundation, but the test results were similar to the results of FE analysis, considering the dynamic interaction of the structure-box foundation-soil system, which indicated that the interaction changed the dynamic characteristics and increased the natural period of the system. The similitude also validated the FE analysis.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第1期1-4,共4页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(50278033)
关键词
动力
箱基础
基频
牵引释放
dynamic
box foundation
basic frequency
draw and release
