Study on the collapse failure of transmission tower-line system under downburst

被引：0
|
作者：
Bi W.-Z. [1 ]
Tian L. [1 ]
机构：
[1] School of Civil Engineering, Shandong University, Jinan
来源：
Gongcheng Lixue/Engineering Mechanics | 2022年 / 39卷
关键词：
Collapse failure; Downburst; Finite element simulation; Response history analysis; Transmission tower-line system;
D O I：
10.6052/j.issn.1000-4750.2021.05.S012
中图分类号：
学科分类号：
摘要：
The short-term destructive strong wind formed by the downburst near the ground will pose a greater threat to building structures, especially to wind-sensitive structures such as transmission tower-line systems. Based on practical engineering, a new finite element model for the transmission tower-line system is established. The deterministic-stochastic hybrid model is used to simulate the generation of the downburst wind field. Based on the Tian-Ma-Qu material model, the progressive collapse process of the structure under the downburst is conducted. The research results demonstrate that: the transmission tower under the downburst performs its significant local deformation in a short time, the buckling of many diagonal members and several main members is the governing reason for the entire collapse of the tower. The segment 6 of the tower is considered the weakest position, to which should be particularly paid attention in the design of the structural resistance to downburst. Copyright ©2022 Engineering Mechanics. All rights reserved.
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页码：78 / 83
页数：5
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