高压输电塔线体系的地震响应研究  

Seismic Responses of High-voltage Transmission Tower-line System

作　　者：汪江[1] 陈喆[2] 周臻[2] 朱虹[2] 

机构地区：[1]安徽省电力科学研究院,安徽合肥230601 [2]东南大学土木工程学院,江苏南京210096

出　　处：《土木工程与管理学报》2011年第3期282-284,293,共4页Journal of Civil Engineering and Management

摘　　要：高压输电塔的塔线耦合作用显著,抗震分析时需采用三维有限元方法。本文以2E2-SZ2型220kV输电塔为例建立ANSYS三维有限元模型。通过模态分析,得到单塔和塔线体系的振动特征。在横向地震荷载作用下,对输电塔位移、基底反力及主材内力计算分析,讨论了地震作用对输电塔线体系的影响,提出一些有益结论。The coupling effect of tower and line on the high-voltage transmission tower is prominent,3D finite-element method is needed for seismic analysis.A 3D finite-element model was build based on the 220kV 2E2-SZ2 transmission tower by the software of ANSYS in this paper.Vibration characteristics of single tower and t ower-line system obtained through modal analysis.The displacements of tower,t he foundation reaction and the internal force of main member are calculated in l ateral seismic loads.In addition,this paper discusses seismic load effects on the transmission tower-line system and some useful results are derived.

关 键 词：输电塔 塔线体系 模态分析 时程分析 

分 类 号：TU311.3[建筑科学—结构工程]