【摘要】 钢筋混凝土立筒仓动力特性参数是评估筒仓结构抗震性能和损伤状态的基础参数。本文以钢筋混凝土立筒仓为试验对象,开展了基于环境激励的现场实仓模态试验研究,得到了该实仓结构的前四阶固有频率、振型和阻尼比;利用模态分析验证了实测结果的有效性和试验方法的可行性,为在役立筒仓结构的损伤识别奠定基础。更多还原

【Abstract】 The dynamic performance of the reinforced concrete silo is an fundamental parameter to evaluate the seismic behavior and damage condition.In order to obtain the actual silo’s dynamic parameter,the modal test in-situ on the single silo under environment drive is performed and the silo’s first four natural frequencies,model shapes and damping ratios are obtained.Based on the modal analysis,the test result is verified and the test method is feasible which lays foundation the damage identification of the silo structure in service.更多还原