北京建筑大学学报2025，Vol.41Issue(6)：77-87,11.DOI:10.19740/j.2096-9872.2025.06.09
地震动脉冲及平扭耦合作用下不同长宽比结构的动力响应分析
Analysis of Dynamic response of different length-to-width ratios structures under pulse-type and Translational-Torsional coupled Ground Motion
摘要
Abstract
Three seismic-resistant steel frame models with different length-to-width ratios are established using finite element software,and the modeling accuracy is verified based on shaking table test data.Near-fault ground motions with and without velocity pulses are selected,and the translational component is obtained.The torsional component is derived using the frequency domain method and input along the long edge direction of the structural model.The effects of pulse-type and translational-torsional coupled ground motions were analyzed,focusing on the structural responses,including floor acceleration,inter-story drift angle,and floor torsional angle.The results show that compared to translational ground motions without velocity pulses,the inclusion of pulse-type translational ground motions increases the structural response,and the coupling effect of pulse-type translational and torsional ground motions further amplifies the structural response.To ensure the safety of building structures,it is recommended to adopt an envelope design that simultaneously considers the seismic pulse effect and translational-torsional coupling effects.关键词
速度脉冲/平扭耦合/长宽比/动力响应Key words
velocity pulse/translational-torsional coupled/length-to-width ratio/dynamic response分类
建筑与水利引用本文复制引用
HAN Miao,GENG Xiang,ZHOU Zhou,YANG Jiechuan..地震动脉冲及平扭耦合作用下不同长宽比结构的动力响应分析[J].北京建筑大学学报,2025,41(6):77-87,11.基金项目
国家自然科学基金项目(52408502) （52408502）
国家重点研发计划项目(2019YFC1509505). （2019YFC1509505）
