混凝土徐变对抗滑桩结构的影响分析

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英文篇名：ANALYSIS OF INFLUENCE OF CONCRETE CREEP ON ANTI-SLIDE PILE STRUCTURE 作者：韩庆洋 ; 陈德斌 ; 付晶 英文作者：HAN Qing-yang;CHENG De-bin;FU Jing;The Second Hydrogeology and Engineering Geological Brigade of Xinjiang Geological and Mineral Bureau; 关键词：混凝土徐变 ; 抗滑桩 ; 应变监测 英文关键词：concrete creep;;anti-slide pile;;strain monitorin 中文刊名：DZHB 英文刊名：Journal of Geological Hazards and Environment Preservation 机构：新疆地矿局第二水文工程地质大队; 出版日期：2019-03-25 出版单位：地质灾害与环境保护 年：2019 期：v.30;No.118 语种：中文; 页：DZHB201901015 页数：4 CN：01 ISSN：51-1467/P 分类号：80-83

摘要

混凝土徐变作用能够增大桩身弯曲变形,占用设计冗余。增大受拉侧混凝土裂缝宽度,降低结构耐久性。由于抗滑桩嵌固段属于隐蔽工程,无法及时发现此类问题,故将会对防治工程造成安全隐患。本文采用在抗滑桩埋设应变计,定期监测桩身应变数值的方法,研究了悬臂式抗滑桩在成桩后至一定时期内的实际受力变形情况。特别是对工程运行初期混凝土徐变作用下的桩身变形情况,进行了分析与总结,最后提出了抗滑桩设计时注意事项。
        The creep of concrete can increase the bending deformation of pile body and occupy redundancy of design. Increase the width of concrete cracks on the tension side and reduce the durability of the structure. Because the embedded section of anti-slide pile is a concealed project, such problems can not be found in time, so it will prevent and control the hidden safety hazards caused by the project. In this paper, the method of laying strain gauge in anti-slide pile and regularly monitoring the strain value of pile body is used to study the actual stress and deformation of cantilever anti-slide pile from pile completion to a certain period of time. Especially, the deformation of pile body under concrete creep in the initial stage of project operation is analyzed and summarized. Finally, the matters needing attention in the design of anti-slide pile are put forward.

引文

[1] 付晶,陈德斌,等.新疆尼勒克县种蜂场大桥南侧滑坡灾害防治工程项目设计书[R].新疆地矿局第二水文工程地质大队,2014.12.
    [2] 付晶,韩庆洋,等.抗滑桩受力参数分析在滑坡防治工程的关键作用研究报告[R].新疆地矿局第二水文工程地质大队,2018.4.
    [3] 中华人民共和国国土资源部.滑坡防治工程设计与施工技术规范(DZ/T0219-2006)[S].2006.