摘要
以500 kV榕江大跨越输电线路工程为背景,基于所建立的输电塔—线体系空间有限元模型,利用时程分析方法研究输电塔—线体系在行波输入下的地震反应,选用3种行波波速对输电塔—线体系进行分析,并与一致激励的地震反应进行比较,结果发现一致激励并不能得到大跨越输电塔的最大不利反应,而受行波波速的影响很大,因此准确估计行波波速对实际工程非常重要。
Taking the 500 kV Rongjiang long-span transmission line project as an example; seismic response of trans- mission tower-line system with the input of traveling wave was studied by using analysis method of time history based on a built space finite element model of the transmission tower-line system. Three types of traveling waves velocity were choosed for the investigation of seismic response of transmission tower-line system and compared with the seismic response under uniform excitations, revealing that the response of transmission tower-line system under uniform exci- tations is not critical, but influenced greatly by the traveling wave velocity, which is very important to get accurate estimation of traveling wave velocity in practical projects.
出处
《华东电力》
北大核心
2010年第1期87-90,共4页
East China Electric Power
关键词
输电塔-线体系
行波效应
视波速
一致激励
地震反应
transmission tower-line system
traveling wave effect
apparent wave velocity
uniform excitations
seismic response
作者简介
邓凌君（1985-），男，硕士研究生，从事输电线路塔线体系的抗震研究。
