中国电力2012，Vol.45Issue(11)：65-69,5.
输电塔线体系非线性地震反应分析
Nonlinear Dynamic Response Analysis of the Transmission Tower-Line System under Earthquake
侯景鹏 1陈加宝 1雷俊方1
作者信息
- 1. 东北电力大学建筑工程学院,吉林吉林132012
- 折叠
摘要
Abstract
With the 5A-ZM4 cat-head transmission tower as an example, a finite element model of transmission tower-line system consisting of two towers and three lines is established by using ANASYS software. The dynamic characteristics of natural frequencies and vibration modes of the system are calculated and the influencing factors are analyzed. Based on 3 typical seismic records of Tianjin wave, El-Centro wave and Shanghai artificial seismic wave, the peak values of the accelerations are scaled up to consider the nonlinear behaviors and plastic limit of transmission towers. The results show that the largest displacements on top of the tower are mainly concentrated between H/200-/100 (H is the height of tower) in the nonlinear ultimate limit state under earthquake; and that the bars between the second and the third diaphragms of the tower fall first into elastic-plastic limit state and produce large plastic deformation, indicating a strong nonlinear characteristics of the system.关键词
输电塔线体系/动力特性/非线性/弹塑性/地震波Key words
transmission tower-line system/ dynamic characteristics/ nonlinear/ elastic-plastic/ seismic waves分类
信息技术与安全科学引用本文复制引用
侯景鹏,陈加宝,雷俊方..输电塔线体系非线性地震反应分析[J].中国电力,2012,45(11):65-69,5.
