摘要
为研究分阶公路边坡在开挖施工和支护结构作用下的位移变化特征及稳定性分析。以贵州某县道上的实际公路边坡为例,结合公路边坡的详细地质勘察资料,分析了边坡在2018年5月–2018年11月监测期内水平和垂直位移及其变形速率的监测数据。结果表明:1)公路边坡在(2018年5月–2018年6月)监测期内位移增长最明显,水平位移最大值为33.4mm,垂直位移最大值为–28.64mm,变形速率随时间的增大呈先增大后减小;2)公路边坡的位移随时间的增加而增大,但水平位移的累积量始终大于垂直位移的最大累积量;3)边坡走向、地质结构、岩层倾向、岩土体性质、支护结构等因素影响公路边坡变形特征的主要因素;4)在2018年7月后,公路边坡位移增加不明显趋于水平变化,变形速率趋于0。
In order to study the displacement characteristics and stability analysis of graded highway slope under the action of excavation construction and support structure.Taking the actual highway slope on a county road in Guizhou as an example,combined with the detailed geological survey data of highway slope,the monitoring data of horizontal and vertical displacement and deformation rate of slope during the monitoring period from May 2018 to November 2018 are analyzed.The results show that:1)the highway slope is in(may 2018~June 2018)During the monitoring period,the maximum horizontal displacement is 33.4 mm,and the vertical displacement is–28.64 mm,and the deformation rate increases first and then decreases with the increase of time;2)the displacement of highway slope increases with the increase of time,but the accumulation of horizontal displacement is always greater than the maximum of vertical displacement;3)slope trend,geological structure,rock tendency,rock and soil properties;4)after July 2018,the displacement increase of highway slope is not obvious,and the deformation rate is 0.
作者
彭德秀
穆锐
PENG Dexiu;MU Rui(GuiZhou Communications Polytechnic,Guiyang 551400,China;Department of Military Installations,Army Logistics University of PLA,Chongqing 401331,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期2141-2146,共6页
Building Structure
基金
国家自然科学基金资助项目(51868009)
关键词
公路边坡
监测
位移
变形特征
稳定性分析
highway slope
monitoring
displacement
deformation characteristics
stability analysis
