• ISSN 1673-5722
  • CN 11-5429/P

地震滑坡灾害下输电杆塔灾损评估研究

严屹然 刘泽宇 冯杰 徐希源 于振 易立新

严屹然,刘泽宇,冯杰,徐希源,于振,易立新,2023. 地震滑坡灾害下输电杆塔灾损评估研究. 震灾防御技术,18(1):107−117. doi:10.11899/zzfy20230112. doi: 10.11899/zzfy20230112
引用本文: 严屹然,刘泽宇,冯杰,徐希源,于振,易立新,2023. 地震滑坡灾害下输电杆塔灾损评估研究. 震灾防御技术,18(1):107−117. doi:10.11899/zzfy20230112. doi: 10.11899/zzfy20230112
Yan Yiran, Liu Zeyu, Feng Jie, Xu Xiyuan, Yu Zhen, Yi Lixin. Research on Transmission Tower Damage Assessment Caused by Earthquake and Landslide[J]. Technology for Earthquake Disaster Prevention, 2023, 18(1): 107-117. doi: 10.11899/zzfy20230112
Citation: Yan Yiran, Liu Zeyu, Feng Jie, Xu Xiyuan, Yu Zhen, Yi Lixin. Research on Transmission Tower Damage Assessment Caused by Earthquake and Landslide[J]. Technology for Earthquake Disaster Prevention, 2023, 18(1): 107-117. doi: 10.11899/zzfy20230112

地震滑坡灾害下输电杆塔灾损评估研究

doi: 10.11899/zzfy20230112
基金项目: 国家电网有限公司总部管理科技项目(5700-202019185A-0-0-00)
详细信息
    作者简介:

    严屹然,男,生于1994年。博士,工程师。主要从事电力应急与地震灾损评估研究工作。E-mail:yanyiran3072@163.com

    通讯作者:

    冯杰,男,生于1985年。硕士,高级工程师。主要从事电力应急研究工作。E-mail:304361989@qq.com

Research on Transmission Tower Damage Assessment Caused by Earthquake and Landslide

  • 摘要: 为快速评估地震与滑坡灾害对输电杆塔的损毁作用,辅助风险防控措施制定与应急指挥人员决策,研究输电杆塔在地震与滑坡灾害中的损失概率模型。使用蒙特卡洛方法模拟地震震级与震源点坐标,结合峰值地面加速度与脆弱性曲线构建输电杆塔震损概率模型。基于Newmark理论与材料力学原理,构建地震诱发滑坡概率模型及杆塔滑坡冲击损毁概率模型。对我国西南部某区域输电杆塔进行地震与滑坡灾损分析,得到研究区域内各输电杆塔震损概率及滑坡冲击损毁概率。研究结果表明,输电杆塔损毁概率随震级的增大而增大,震级相同时输电杆塔损毁概率主要取决于震中距。滑坡体高度及杆塔与坡脚距离是影响杆塔损毁概率的主要因素,较高处的滑坡体下落时将重力势能转化为动能,进而冲击作用于杆塔,而较小的杆塔与坡脚距离将导致摩擦损耗较小。对于损毁概率较高的杆塔,应采取避让、迁移等措施,降低滑坡灾害的影响。
  • 图  1  Newmark滑块位移法计算原理

    Figure  1.  Principle of Newmark sliding displacement method

    图  2  工作流程

    Figure  2.  Working flowchart

    图  3  电网结构拓扑图

    Figure  3.  Schematic diagram of power grid topology structure

    图  4  不同震级PGA-震中距曲线

    Figure  4.  PGA-epicentral distance curve for different magnitude earthquakes

    图  5  不同等级地震对杆塔损毁效果

    Figure  5.  Damage effects of different levels of earthquakes on poles and towers

    图  6  地震诱发滑坡概率

    Figure  6.  Probability of landslide caused by earthquake

    表  1  杆塔主要参数

    Table  1.   Tower parameters

    杆塔材质弹性模量/(kN·mm−2相关线路
    钢/Q3452007#-8#
    200
    200
    200
    钢/Q235206
    钢/Q2352067#-10#
    206
    206
    206
    206
    钢/Q345200
    200
    钢/Q3452008#-10#
    200
    200
    下载: 导出CSV

    表  2  滑坡冲击作用下杆塔参数与损毁概率

    Table  2.   Tower parameters and damage probability under landslide impact

    杆塔岩土组成滑坡体高度/m杆塔与坡脚距离/m杆塔损毁概率
    碎石块堆积体58.6412.050.46
    61.617.8400.61
    22.3313.200.07
    60.6615.840.55
    47.219.0300.23
    黏土碎石25.286.4200.13
    17.549.1100.06
    16.1511.5200.04
    20.885.5700.10
    16.2611.0100.03
    17.2212.5100.05
    23.368.5300.11
    碎石块堆积体56.327.7600.52
    44.755.4500.38
    73.069.8300.40
    下载: 导出CSV
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  • 收稿日期:  2022-03-29
  • 刊出日期:  2023-03-31

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