摘要
通过测试高层建筑结构在自然环境激励下的动态响应信号,进行动力参数识别,可以验证理论计算结果的准确性,为建筑结构安全评估及损伤识别提供依据,为结构抗震计算和设计提供重要指标。针对某办公楼首先采用脉动法进行动力测试,获得了其固有频率和振型。最后,运用有限元方法对该结构进行模态分析和抗震计算,结果表明:实测动力特性结果与计算结果符合较好,结构抗震承载力满足要求,利用该检测方法可以较好的把握结构的整体性能。
Through testing the dynamic response signals of high-rise buildings under the excitation of the natural environment vibration,the dynamic behaviors is identified,the accuracy of theoretical calculation results can be verified,which provide basis for structural damage detection and assessment of the safety and key indicators for the seismic analyses of structures and design.Firstly,the vibration tests of an office building with pulsating method are completed for getting the natural frequencies and modes.Then,the modal analysis and seismic calculation of the building by using the finite element method are accomplished.The results show that the testing results agree well with theoretical analysis,and the structure has a good capacity to meet earthquake fortification,therefore,the detect method can get a better overall structural performance.
出处
《世界地震工程》
CSCD
北大核心
2010年第3期169-174,共6页
World Earthquake Engineering
基金
江苏省建设厅科研基金项目(JS200116)
关键词
动力测试
安全评估
抗震计算
整体性能
vibration test
safety assessment
seismic calculation
overall performance
