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

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

严屹然^{1, 2,},
刘泽宇^{1, 2},
冯杰^{1, 2, ,},
徐希源^{1, 2},
于振^{1, 2},
易立新³

1.
国网智能电网研究院有限公司, 北京 102209
2.
电力网络安全防护与监测技术实验室, 北京 102209
3.
南开大学, 环境科学与工程学院, 天津 300071

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

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- 文章访问数: 336
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出版历程
- 收稿日期: 2022-03-29
- 刊出日期: 2023-03-31

Research on Transmission Tower Damage Assessment Caused by Earthquake and Landslide

Yan Yiran^{1, 2
,},
Liu Zeyu^{1, 2},
Feng Jie^{1, 2
, ,},
Xu Xiyuan^{1, 2},
Yu Zhen^{1, 2},
Yi Lixin³

1.
State Grid Smart Grid Research Institution Co., Ltd, Beijing 102209, China
2.
State Grid Laboratory of Power Cybersecurity Protection and Monitoring Technology, Beijing 102209, China
3.
Nankai University, School of Environmental Science and Engineering, Tianjin 300071, China

摘要

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。
- 输电杆塔 /
- 灾损评估 /
- 脆弱性曲线 /
- Newmark理论 /
- 蒙特卡洛方法
Abstract: In order to evaluate the damage effect of earthquake and landslide disasters on transmission towers, assisting in the formulation of risk prevention and control measures and the decision-making of emergency commanders, this paper studies the loss probability model of transmission towers in earthquake and landslide disasters. The Monte Carlo method is used to simulate the earthquake magnitude and focal point coordinates, and combined with the peak ground acceleration (PGA) and vulnerability curve, the seismic loss probability model of transmission tower is constructed; Based on Newmark theory and the principle of material mechanics, the probability model of earthquake induced landslide and the impact damage probability model of tower landslide are constructed. The earthquake and landslide disaster damage analysis of transmission towers in a region in Southwest China is carried out, and the earthquake damage probability and landslide impact damage probability of transmission towers in the study area are obtained. The results show that the damage probability of transmission tower increases obviously with the increase of earthquake magnitude, and the damage probability of transmission tower mainly depends on the epicenter distance. The height of the landslide mass and the distance between the tower and the slope toe are the main factors affecting the damage probability of the tower. The falling of the landslide mass at a higher height will convert the greater gravitational potential energy into kinetic energy and then impact the tower, while the shorter distance between the tower and the slope toe will also lead to less friction loss. For the towers with high damage probability, effective planning such as avoidance and relocation should be adopted to reduce the impact of landslide disaster on the transmission grid.
- Power transmission tower /
- Damage evaluation /
- Fragility curve /
- Newmark theory /
- Monte-Carlo method

HTML全文

图 1 Newmark滑块位移法计算原理

Figure 1. Principle of Newmark sliding displacement method

下载: 全尺寸图片幻灯片

图 2 工作流程

Figure 2. Working flowchart

下载: 全尺寸图片幻灯片

图 3 电网结构拓扑图

Figure 3. Schematic diagram of power grid topology structure

下载: 全尺寸图片幻灯片

图 4 不同震级PGA-震中距曲线

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

图 6 地震诱发滑坡概率

Figure 6. Probability of landslide caused by earthquake

下载: 全尺寸图片幻灯片

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
①	钢/Q345	200	7#-8#
②		200
③		200
④		200
⑤	钢/Q235	206
⑥	钢/Q235	206	7#-10#
⑦		206
⑧		206
⑨		206
⑩		206
⑪	钢/Q345	200
⑫	钢/Q345	200
⑬	钢/Q345	200	8#-10#
⑭		200
⑮		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
①	碎石块堆积体	58.64	12.05	0.46
②		61.61	7.840	0.61
③		22.33	13.20	0.07
④		60.66	15.84	0.55
⑤		47.21	9.030	0.23
⑥	黏土碎石	25.28	6.420	0.13
⑦		17.54	9.110	0.06
⑧		16.15	11.520	0.04
⑨		20.88	5.570	0.10
⑩		16.26	11.010	0.03
⑪		17.22	12.510	0.05
⑫		23.36	8.530	0.11
⑬	碎石块堆积体	56.32	7.760	0.52
⑭		44.75	5.450	0.38
⑮		73.06	9.830	0.40

下载: 导出CSV

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