高烈度地区地震对塔线体系的影响研究

Research of Seismic Effect on the Transmission Line System in High Intensity Area

输电塔线体系属于大跨度空间结构,由行波效应、部分相干效应和局部场地效应等因素综合作用,导致不同位置的输电塔地震响应不同,多维多点地震激励是其震害的主要原因之一,研究输电塔线体系在多维多点地震作用下的响应规律具有重要的现实意义。本文采用大质量分析法实现了输电塔线体系多维多点的地震作用模拟计算,并将计算结果与单塔结构的时程分析结果对比分析。

The transmission line system is a long-span spatial structure,and the seismic ground motion is different,which is influenced by traveling wave effect,partial coherence effect and local field effect.Multi-point seismic excitation is one of the main causes of seismic damage for the transmission tower system,so it is important to study its response law under multi-point seismic.In this paper,the large mass method is used to solve the multi-point seismic simulation,and the multi-point seismic calculation calculation result is compared with the time history analysis results of single tower structure.