摘要
边坡滑坡问题对输电杆塔的稳定性具有重要影响,特别是在复杂地形和多变气候条件下,边坡滑动严重影响输电杆塔基础的稳定性,进而严重威胁电力供应的安全性。通过数值模拟方法研究了不同降雨条件下杆塔-桩-边坡系统的稳定性。在考虑典型风荷载的条件下,探讨了不同降雨强度下系统的力学响应规律,揭示了降雨诱发边坡失稳与杆塔基础失效的耦合机制。计算结果研究表明,降雨能够显著降低边坡的稳定性,同时引起杆塔结构内力的重分布。杆塔-桩-边坡系统的位移和变形特性随降雨强度发生显著变化。研究结果对基于降雨预警的稳定性评估方法和工程优化具有指导意义。
The stability of transmission tower is significantly influenced by slope landslide issues,particularly under complex terrain and variable climatic conditions where slope movement critically compromises foundation integrity,thereby posing substantial threats to power supply reliability.The stability of a tower-pile-slope systems under different rainfall conditions is investigated through numerical simulation methods.By incorporating typical wind load condition,the research explores the mechanical response patterns of the system under varying rainfall intensities,revealing the coupling mechanism between rainfall-induced slope instability and foundation failure.The calculation results demonstrate that rainfall substantially reduces slope stability while inducing internal force redistribution within tower structures.Both displacement and deformation characteristics of the tower-foundation-slope system exhibit significant variations corresponding to rainfall intensity variations.These findings provide critical insights for developing rainfall-warning-based stability assessment methodologies.
作者
赵炜
郑晓虎
秦兴元
李康
李廷言
董波
陈聪
ZHAO Wei;ZHENG Xiaohu;QIN Xingyuan;LI Kang;LI Yanyan;DONG Bo;CHEN Cong(Bijie Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Bijie 551700,Guizhou Province,China;School of Energy and Power Engineering,Dalian Institute of Technology,Dalian 116024,Liaoning Province,China)
出处
《吉林建筑大学学报》
2025年第6期21-27,共7页
Journal of Jilin Jianzhu University
基金
国家自然科学基金(52076032)。
关键词
输电杆塔
边坡稳定性
强度折减法
降雨强度
数值模拟
transmission tower
slope stability
strength reduction method
rainfall intensity
numerical simulation
