风荷作用下的输电塔结构倒塌破坏分析

摘要

Transmission tower line system, as the carrier of high load power transmission, is a kind of important lifeline engineering. With the continuous improvement of people's living standard and the rapid development of national economic construction, its security has gotten more and more attention. In this paper, the ABAQUS finite element software is used to analyze the collapse of the transmission tower line system based on the explicit finite element method and the life and death element method. The analytical method shows that the proposed method can simulate the collapse behavior and collapse path of transmission tower line system under wind load and help the designers to strengthen the transmission tower structure based on the structure of the damage process.%输电塔-线体系作为高负荷电能的输送载体，是一种重要的生命线工程。随着人民生活水平的不断提高和国家经济建设的快速发展，其安全性越来越受到广泛的关注。本文采用ABAQUS有限元软件，并基于显式有限单元法与生死单元法对输电塔线体系进行倒塌破坏分析。分析方法表明：本文提出的方法不仅可以清晰有效地模拟输电塔-线体系在风荷载作用下的倒塌行为和倒塌路径，而且有助于设计者可以依据结构的破坏过程对输电塔结构进行加固等。