东南大学学报（自然科学版）2025，Vol.55Issue(6)：1564-1571,8.DOI:10.3969/j.issn.1001-0505.2025.06.008
脉冲地震动不同入射角下输电塔-线体系动力响应研究
Study on the response of transmission tower-line system under pulse earthquake excitation at different incidence angles
摘要
Abstract
To address the seismic performance of transmission tower-line systems under near-fault pulse earth-quakes with different incident angles,wavelet analysis was used to identify near-fault pulse motions.Consider-ing the influence of incident angle variations on ground motion amplitude,near-fault pulse earthquakes were classified into seven categories based on the variation angle index maximum,which is suitable for multi-angle ground motion incidence analysis.A refined finite element model of the transmission tower-line system was es-tablished to analyze its seismic response with varying incident angles.The results indicate that,among the 236 extracted near-fault pulse records,the maximum pulse velocities predominantly fall within 0.2 to 0.8 m/s,while the pulse period distribution exhibits skewness.The transmission tower-line system exhibits significantly different responses under varying incident angles.The ground motion category shows notable influence on the response of the transmission tower-line system under multi-directional excitations.Particularly for ground mo-tions with relatively small variation angle index maximum,the maximum differences in acceleration and dis-placement responses reach 3.12 times and 2.38 times respectively.The incident angle variation exerts a more pronounced influence on the response of the transmission tower-line system.关键词
脉冲地震/输电塔-线体系/入射角度/数值模拟Key words
pulse earthquake/transmission tower-line system/incidence angle/numerical simulation分类
建筑与水利引用本文复制引用
付兴,王闯,李宏男,朱宇,邵帅..脉冲地震动不同入射角下输电塔-线体系动力响应研究[J].东南大学学报（自然科学版）,2025,55(6):1564-1571,8.基金项目
国家自然科学基金面上资助项目(52378483). （52378483）
