地质灾害对超高压输电线路杆塔杆件失效影响分析

TM754; 地质灾害容易导致输电线路杆塔基础发生移动和变形,造成杆塔结构失效甚至损毁,严重影响输电线路的安全稳定运行.针对地质灾害导致的某500 kV杆塔结构受损问题,提出一种基于第四强度理论的判断杆件失效的方法,可准确判断杆件失效部位和失效程度.利用ANSYS软件建立杆塔精细化有限元模型,施加地质灾害下各工况塔基约束条件,基于失效判据对杆塔应力进行分析.结果 表明:塔基沉降量达29 mm时,塔腿上横隔面交叉材屈曲失稳;沉降量达76 mm时,塔腿主材失效.塔基沉降和倾斜对杆塔破坏最为严重,塔基侧滑对杆塔影响较小.根据塔材失效的特点,提出杆塔结构加固及灾害监测与预防的建议,结合工程实际,为地质...

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Published in电测与仪表 Vol. 57; no. 7; pp. 16 - 22
Main Authors 周文峰, 杜志叶, 张力, 修连成, 甘艳, 邹建明
Format Journal Article
LanguageChinese
Published 武汉大学电气与自动化学院,武汉,430072%国家电网公司华中分部,武汉,430077 10.04.2020
Subjects
输电线路
杆塔
地质灾害
有限元分析
结构失效
Online AccessGet full text
ISSN1001-1390
DOI10.19753/j.issn1001-1390.2020.07.003

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Abstract TM754; 地质灾害容易导致输电线路杆塔基础发生移动和变形,造成杆塔结构失效甚至损毁,严重影响输电线路的安全稳定运行.针对地质灾害导致的某500 kV杆塔结构受损问题,提出一种基于第四强度理论的判断杆件失效的方法,可准确判断杆件失效部位和失效程度.利用ANSYS软件建立杆塔精细化有限元模型,施加地质灾害下各工况塔基约束条件,基于失效判据对杆塔应力进行分析.结果 表明:塔基沉降量达29 mm时,塔腿上横隔面交叉材屈曲失稳;沉降量达76 mm时,塔腿主材失效.塔基沉降和倾斜对杆塔破坏最为严重,塔基侧滑对杆塔影响较小.根据塔材失效的特点,提出杆塔结构加固及灾害监测与预防的建议,结合工程实际,为地质灾害下杆塔的稳定性分析及处理提供一定的指导作用.
AbstractList TM754; 地质灾害容易导致输电线路杆塔基础发生移动和变形,造成杆塔结构失效甚至损毁,严重影响输电线路的安全稳定运行.针对地质灾害导致的某500 kV杆塔结构受损问题,提出一种基于第四强度理论的判断杆件失效的方法,可准确判断杆件失效部位和失效程度.利用ANSYS软件建立杆塔精细化有限元模型,施加地质灾害下各工况塔基约束条件,基于失效判据对杆塔应力进行分析.结果 表明:塔基沉降量达29 mm时,塔腿上横隔面交叉材屈曲失稳;沉降量达76 mm时,塔腿主材失效.塔基沉降和倾斜对杆塔破坏最为严重,塔基侧滑对杆塔影响较小.根据塔材失效的特点,提出杆塔结构加固及灾害监测与预防的建议,结合工程实际,为地质灾害下杆塔的稳定性分析及处理提供一定的指导作用.
Author 张力
周文峰
杜志叶
甘艳
修连成
邹建明
AuthorAffiliation 武汉大学电气与自动化学院,武汉,430072%国家电网公司华中分部,武汉,430077
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Zou Jianming
Zhou Wenfeng
Zhang Li
Gan Yan
Xiu Liancheng
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杆塔
地质灾害
有限元分析
结构失效
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Snippet TM754; 地质灾害容易导致输电线路杆塔基础发生移动和变形,造成杆塔结构失效甚至损毁,严重影响输电线路的安全稳定运行.针对地质灾害导致的某500 kV杆塔结构受损问题,提出一...
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Title 地质灾害对超高压输电线路杆塔杆件失效影响分析
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