风荷载作用下输电塔-线体系不确定性分析

doi:10.6040/j.issn.1672-3961.0.2020.475

山东大学学报 (工学版) ›› 2021, Vol. 51 ›› Issue (4): 99-105.doi: 10.6040/j.issn.1672-3961.0.2020.475

• • 上一篇

风荷载作用下输电塔-线体系不确定性分析

徐震¹,张涛²,葛向东²,高峰²,张来仪³,张欣³,田利^3*

1. 山东电力工程咨询院有限公司, 山东济南 250013;2. 内蒙古鲁电蒙源电力工程有限公司, 内蒙古呼和浩特 010020;3. 山东大学土建与水利学院, 山东济南 250061

发布日期:2021-08-18
作者简介:徐震(1981— ),男,山东济南人,高级工程师,主要研究方向为输电塔设计. E-mail:172103458@qq.com. *通信作者简介:田利(1982— ),男,山东枣庄人,教授,博士,主要研究方向为结构防灾减灾. E-mail:tianli@sdu.edu.cn
基金资助:
山东大学青年学者未来计划项目(2017WLJH33)

Uncertainty analysis of transmission tower-line system under wind load

XU Zhen¹, ZHANG Tao², GE Xiangdong², GAO Feng², ZHANG Laiyi³, ZHANG Xin³, TIAN Li^3*

1. Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, Shandong, China;
2. Inner Mongolia Ludian Mengyuan Electric Power Engineering Co., Ltd., Huhhot 010020, Inner Mongolia, China;
3. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China

Published:2021-08-18

摘要/Abstract

摘要： 考虑输电塔-线体系结构参数的不确定性并进行倒塌分析,能够更准确地描述整体结构的倒塌过程。分析输电塔-线体系在风荷载作用下的倒塌过程对结构的材料和几何不确定性参数的敏感性;建立输电塔-线体系的倒塌准则,提出整体损伤指标,通过拉丁超立方抽样法建立关于结构参数的不确定模型,统计输电塔倒塌发生的节间及其倒塌概率。结果表明,6个不确定性参数中令结构倒塌临界风速变化幅度最大的是钢材的屈服强度;考虑结构参数不确定性对输电塔-线体系进行风致易损性计算时,结构的倒塌临界风速提高。

关键词: 输电塔-线体系, 不确定性, 风荷载, 倒塌, 整体损伤指标

Abstract: Considering the parameter uncertainty of tower-line architecture and collapse analysis, the collapse process of the whole structure could be described more accurately. The sensitivity of the collapse process of the transmission tower-line system under wind load to the material and geometric uncertain parameters of the structure was analyzed. The collapse criterion of transmission tower-line system was established, and the global damage index(GDI)was proposed. The uncertain model of structural parameters was established by Latin hypercube sampling method, and the internodes and collapse probability of transmission tower collapse were counted. The results showed that the yield strength of steel was the biggest change in the critical wind speed of structural collapse among the six uncertain parameters. When calculating the wind-induced vulnerability of the transmission tower-line system considering the uncertainty of structural parameters, the critical wind speed of structural collapse increased.

Key words: tower-line system, uncertainty, wind load, collapse, global damage index

中图分类号:

TU355.2

徐震,张涛,葛向东,高峰,张来仪,张欣,田利. 风荷载作用下输电塔-线体系不确定性分析[J]. 山东大学学报 (工学版), 2021, 51(4): 99-105.

XU Zhen, ZHANG Tao, GE Xiangdong, GAO Feng, ZHANG Laiyi, ZHANG Xin, TIAN Li. Uncertainty analysis of transmission tower-line system under wind load[J]. Journal of Shandong University(Engineering Science), 2021, 51(4): 99-105.

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风荷载作用下输电塔-线体系不确定性分析

Uncertainty analysis of transmission tower-line system under wind load

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