风荷载作用下输电塔风振响应分析

Wind vibration response analysis under the action of wind load transmission tower

输电塔是广泛应用于生命线工程的一种高柔结构,受到风荷载反应尤其敏感,易产生较大动力响应。本文采用ANSYS软件建立结构三维有限元模型,用MATLAB生成输电塔迎风面上的风荷载时程曲线做为动力输入,对两种不同类型的输电塔结构进行了风振响应分析,得到位移、速度、加速度的时程曲线,从而通过时程响应分析了解正常工作安全适用度的要求以及对结构的影响。

Transmission tower is widely used in lifeline engineering a high soft structure,wind load is easy to produce large dynamic response,especially sensitive.This paper is to sap2000 software based on the structure of 3 d finite element model.MATLAB generation transmission tower on the wind load time-histories curve as a power input,to two different types of transmission tower structure of the wind vibration response analysis by displacement,acceleration,velocity,time history curve,and through the time history response analysis to understand the normal work safety and applicable degree requirements and to the influence degree of the structure.