【作者】 李爽； 刘向阳； 单思镝； 谢礼立；

【Author】 Li Shuang;Liu Xiangyang;Shan Sidi;Xie Lili;Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education,Harbin Institute of Technology;

【机构】 哈尔滨工业大学结构工程灾变与控制教育部重点实验室；

【摘要】 通过地震振动台模型试验的缩尺模型来评判原型结构的抗震性能,原型与模型结构相似过程的合理性将起着决定性的作用。本研究主要针对钢筋混凝土框架结构在振动台模型试验中原型与模型结构在弹塑性变形阶段的非线性相似性进行。首先,选择典型框架结构并确定其使用材料、构件尺寸等属性,利用目前振动台模型试验中模型设计的常规方法确定相似常数以及模型结构的材料、尺寸等条件。根据振动台试验中输入地震动选择的一般方法以及所使用的原型与模型结构选择了3条的地震动记录,并确定了地震动的输入顺序。其次,根据实际振动台模型试验的地震动输入方式,以数值计算方式模拟试验过程,将选择的地震动对确定的原型与模型结构分别作用,研究结构在罕遇地震水平下的结构弹塑性反应,分析原型与模型结构的相似性。最后,选择多条地震动记录,利用IDA(Increment Dynamic Analysis)方法对结构进行易损性分析。通过对原型与模型结构的抗震性能分析,分析原型与模型结构的相似性。更多还原

【Abstract】 Shaking table model test can better reproduce the seismic excitation and structural earthquake response processes.The rationality of similarity between the prototype and scaled models will play a decisive role in the shaking table test.This paper mainly focuses on similarity of the reinforced concrete frame structure in elastic — plastic deformation stage in shaking table test between prototype and model structures.First,a typical frame structure is chosen and the materials,component size and other attributes are determined.A common method used in shaking table test is adopted to determine the similarity of the model parameters and three input ground motions are selected.Secondly,the actual shaking table test procedure is simulated by numerical analysis method,and the rationality of the similarity is studied under specific earthquake intensities.Finally,a number of ground motion records are selected,the structural fragility analysis is conducted by using the IDA(Increment Dynamic Analysis) method.Through the seismic performance of the prototype and model structures,the similarity of the prototype and model structure is discussed.更多还原