基于小波函数的IDA分析在RC框架结构中的应用  

Application of IDA analysis based on wavelet function in RC framework structure

作　　者：王子英 王博远 薛廿禧 肖凯 Wang Ziying;Wang Boyuan;Xue Nianxi;Xiao Kai

机构地区：[1]天津市房屋质量安全鉴定检测中心有限公司,天津300060 [2]天津城建大学国际工程学院,天津300384 [3]天津城建大学土木工程学院,天津300384

出　　处：《重庆建筑》2023年第8期42-44,共3页Chongqing Architecture

摘　　要：针对某实际框架结构的抗震性能评估问题,利用OpenSees建立结构有限元模型,以谱加速度为地震动强度指标,层间位移角最大值为结构损伤指标,通过基于小波函数的拟合方法合成目标反应谱的地震动加速度时程,并对结构进行增量动力分析。结果表明,在相同条件下,基于小波函数所仿真出来的IDA曲线离散性显著降低,随着拟合精度的提高,三个分位数曲线更加集中,结构的IDA分析也更为有效。研究结果为提高框架结构的抗震性能提供了有效途径。For the seismic performance evaluation of some frame structure,OpenSees is used to establish the structural finite element model,the spectral acceleration is chosen as the strength measure of seismic ground motion and the maximum interlayer displacement angle as the structural damage measure,the ground motion acceleration time history of the target response spectrum is synthesized by the fitting method based on wavelet function,and the incremental dynamic analysis of structure is performed.The results show that under the same conditions,the dispersion of IDA curves simulated based on the wavelet function is significantly reduced,and with the improvement of fitting accuracy,the three quantile curves are more concentrated,and the IDA analysis of the structure is more effective.The research results provide an effective way to improve the seismic performance of frame structure.

关 键 词：增量动力分析 反应谱 RC框架结构 地震动合成 抗震性能 

分 类 号：TU352.1[建筑科学—结构工程]