长短腿输电塔的风振响应分析  

ANALYSIS OF WIND-INDUCED DYNAMIC RESPONSE OF ELECTRIC TRANSMISSION TOWERS WITH UNEQUAL LEGS

作　　者：贾玉琢[1] 汤彪[1] 

机构地区：[1]东北电力大学建筑工程学院,长春132012

出　　处：《工业建筑》2010年第S1期413-416,426,共5页Industrial Construction

摘　　要：以等长腿输电塔与长短腿输电塔为研究对象,依据谐波叠加法利用MATLAB软件生成作用在输电塔上的风速时程,在0°风荷载作用下,利用有限元软件ANSYS对输电塔的位移、支座反力以及主材内力进行计算。分析高低腿输电塔在0°风荷载下的动力响应。结果表明:短腿的存在对于输电塔的位移、支座反力及塔柱主材的轴力都会产生比较大的影响,这种影响随着高度的增加而逐渐减小。Taking electric transmission towers as research object.Using MATLAB,the time histories of wind velocity are simulated with the harmonic superposition method.The displacements of tower,the support reaction and the axial force of the tower are calculated with ANSYS under the wind load.The results show that the existence of the short legs has a greater effect on the displacements of tower,the support reaction and the axial force of tower.But,the effect will be less with the increasing of the height of tower.

关 键 词：长短腿输电塔 谐波叠加法 有限元 风速时程 风振反应 

分 类 号：TU311.3[建筑科学—结构工程] TU347