森林工程2025，Vol.41Issue(3)：646-656,11.DOI:10.7525/j.issn.1006-8023.2025.03.021
大兴安岭林区杆塔基础病害特征及防治措施
Distress Characteristics and Countermeasures of Poles and Tower Foundations in the Da Xing′anling Forest Region
摘要
Abstract
The failure of structures or components in permafrost caused by foundation diseases poses a certain threat to the ecological security of forest region.Based on field investigations of foundations of power foundations along the section Jagdaqi-Mo'he of Beijing-Mo'he national highway and China-Russia crude oil pipelines(CRCOPs)near the forest region in permafrost in Northeastern China,the main distress characteristics and countermeasures of the foundations were ana-lyzed and summarized,and improved countermeasures were proposed.The results from field surveys showed that trans-mission line towers foundations suffered from frost jacking accounted for 18.1%,including uniform frost jacking(8.5%)and nonuniform frost jacking(9.6%),while foundations with thaw settlement occupied only 3.7%.Fissures(2.7%),spalling(2.7%),cracks(4.3%),erosion(5.9%),tilt(3.7%),and fracture(0.5%)occurred on the concrete foun-dation surface.The influences of nonuniform frost jacking and tilting had great influence on the safety of the tower.The concrete protective caps were more severely damaged by frost action,exhibiting fissures(15.4%),spalling(8.5%),cracks(15.4%),and erosion(58%).Similarly,the tilting and collapse of utility poles were primarily caused by frost jacking and crack.Based on the above damages,it is suggested to build long-term monitoring systems for tracking the structures in permafrost regions,improve and optimize the existing mitigative measures.The findings provide some refer-ences for the design,construction,and damage prevention of infrastructures in permafrost regions,aiming to mitigate the impact of engineering on the ecological environment of natural forest region.关键词
大兴安岭林区/多年冻土区/基础/病害调查/防治措施Key words
Da Xing'anling/forest region/permafrost regions/pole and tower/transmission line/foundations/distress investigation/mitigative measures分类
建筑与水利引用本文复制引用
林峻岑,张航,李国玉,苏安双,高凯,曹亚鹏,陈敦,王旭,王淼..大兴安岭林区杆塔基础病害特征及防治措施[J].森林工程,2025,41(3):646-656,11.基金项目
国家电网有限公司科技项目(5200-202230098A-1-1-ZN). （5200-202230098A-1-1-ZN）
