摘要
利用有限元软件对钢筋混凝土柱承式单仓模型进行模态分析,得到用于指导测点布置的数值计算结果;通过对柱承式立筒仓模型进行环境激励模态试验,获得了模型结构的前几阶模态参数及其特点;通过对模态参数进行模态验证、振动台试验和有限元对比分析,验证了试验结果合理及试验方法可行,为开展实仓结构的现场模态试验奠定基础。
The modal analysis of the single silo model supported by RC columns is carry out by the finite element software in order to obtain the numerical calculation result which will guide the layout of test spot; The modal experiment based on environment drive is utilized to explore the first four step modal parameters of the silo model and their characteristics ; The modal validation based on modal parameters is performed. Furthermore, the results from the modal experiment are compared with those from the shaking table test and the simulation by finite element method The experiment results are rational and the experiment method is feasible which lays foundation for the spot modal experiment of the silo structure.
出处
《建筑科学》
北大核心
2012年第7期19-22,18,共5页
Building Science
基金
国家自然科学基金项目(51178164)
河南省重点科技攻关计划资助项目(112102210003)
河南工业大学科研基金重点项目(09XZD003)
关键词
筒仓模型
环境激励
模态试验
有限元
silo model
environment drive
modal experiment
finite element
