摘要
针对预应力锚索在长期运行条件下产生腐蚀、断口等缺陷的问题,基于应变体监测技术,通过对中部、左侧、右侧缺陷锚索的张拉试验和数值模拟试验,提出了一种确定锚索缺陷位置的理论方法。试验结果表明缺陷位置与应变之间存在关系,且数值模拟试验与物理试验结果、趋势基本相同;通过15组不同缺陷位置数值模拟试验拟合建立了锚索应变与缺陷位置的关系,为确定锚索缺陷位置提供了一种可行途径,也为预应力锚固工程的长期安全运行提供了技术支撑。
Aiming at the problems of defects suchas corrosion and fracture of prestressed anchor cables under long-term operation,a theoretical method to determine the defect location of anchor cables is proposed based on the strain monitoring technology and the numerical simulation tests on the middle,left and right defective anchor cables.The experimental results show that there is a relationship between the defect location and the strain,and the results and trends of the numerical simulation and physical tests are basically the same.The relationship between the cable strain and the defect location is established through 15 groups of numerical simulation tests on different defect locations.It provides a feasible way to determine the defect location of cables and also a technical support for long-term safe operation of prestressed anchorage engineering.
作者
王国岗
陈亚鹏
李金航
安新赞
赵文超
WANG Guogang;CHEN Yapeng;LI Jinhang;AN xinzan;ZHAO Wenchao(Beifang Investigation,Design&Research Co.,Ltd.,Tianjin 300222,China;School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Institute of Geotechnical Engineering,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Anyang University,Anyang 366000,China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2023年第S01期240-243,共4页
Chinese Journal of Geotechnical Engineering
基金
国家重点研发计划项目(2018YFC0407000)
中国水科院人才基金项目(GE0199A2021)
中国长江三峡集团有限公司科研项目(JG/19055J)
关键词
预应力锚索
应变监测技术
缺陷检测
数值模拟
prestressed anchor cable
strain monitoring technology
defect detection
numerical simulation
作者简介
王国岗(1988—),男,工程师,主要从事地质信息化方面的工作。E-mail:wang_gg@bidr.com.cn;通信作者:陈亚鹏,E-mail:chen_yp@bidr.com.cn
