碳纤维复合芯导线输电塔体系地震响应

基于碳纤维复合芯导线所具有的优点，运用数值模拟方法建立了碳纤维复合芯导线和传统钢芯铝绞线输电塔体系三维有限元模型，采用时程分析法，考虑了导(地)线的几何非线性，研究了一致激励和非一致激励地震作用下导(地)线输电塔体系的地震响应，得到了两种塔—线体系的塔顶位移和加速度、塔腿应力、导线中点最大位移和加速度、导线轴力的时程曲线。结果表明，碳纤维复合芯导线—输电塔体系与钢芯铝绞线—输电塔体系相比，塔顶最大位移、塔腿应力、导线中点最大位移和加速度均较小，一致激励地震作用与非一致激励地震作用的地震响应相差较大，非一致激励地震作用下比一致激励地震作用下的导线中点和挂点轴力大。

Seismic Response of ACCC Conductor-transmission Tower System

Based on the advantages of carbon fiber composite core wire, numerical simulation method is adopted to establish three-dimensional finite element model of carbon fiber composite core wire and ACSR transmission tower system. Considering grounded geometric nonlinearity, time history analysis method is used to study the seismic response of the ground line transmission tower system under the conditions of uniform excitation and non-uniform excitation. And then two towers-line system overhead displacement and acceleration, tower legs stress, wire midpoint of the displacement and acceleration, conductor axis force-time curve are obtained. Compared with the carbon fiber composite core wire-transmission tower system with ACSR transmission tower system, the results show that the top of the tower displacement, tower leg stress, wire and midpoint maximum displacement and acceleration are smaller; non-uniform excitation wire midpoint hanging point axial force is greater than the uniform excitation; the stress of the wire midpoint of uniform excitation is greater then the non-uniform excitation.