摘要
以甘肃省黄土山区某新建铁路路堑高边坡工程为背景,选取边坡最不利断面为研究对象,基于强度折减法计算原理,对自然状态下的边坡稳定性进行数值模拟研究,在此基础上针对性设计不同加固措施,并分析其对边坡稳定性的影响。自然状态下边坡水平位移自坡脚开始,主要位于坡脚以上的表层土体中;喷射混凝土+锚杆+挡土墙的结构形式对于边坡变形有很好的控制效果;喷射混凝土+锚杆支护形式下边坡安全系数由1.05提升至1.75,采用喷射混凝土+挡土墙+锚杆时边坡安全系数增大为1.87,综合考虑边坡变形和安全性,建议采用锚杆+挡土墙+喷射混凝土的加固措施对黄土路堑高边坡进行加固。
Taking the high cutting slope project of a new railway in Loess mountainous area of Gansu Province as the research background, the most unfavorable section of the slope is selected as the research object, and the slope stability in natural state is studied by using numerical simulation software based on the calculation principle of strength reduction method. On this basis, the effects of different reinforcement measures on slope stability are designed and their impact on slope stability is analysed. In the natural state, the horizontal displacement of the slope starts from the slope toe, and the range of horizontal displacement is mainly located in the surface soil above the slope toe. The structural form of shotcrete + anchor rod + retaining wall is very effective for slope deformation control. The support form of shotcrete + anchor rod increases the slope safety factor from 1.05 to 1.75. When shotcrete + retaining wall + anchor rod is used, the slope safety factor increases to 1.87. Considering the slope deformation and slope safety, it is recommended to adopt the reinforcement measures of anchor rod + retaining wall + shotcrete to strengthen the high slope of loess cutting.
作者
黄毅
武进广
魏海明
王武
杨彤
HUANG Yi;WU Jinguang;WEI Haiming;WANG Wu;YANG Tong(Xi’an Railway Engineering Co.,Ltd.of China Railway seventh Group,Xi’an,Shaanxi 710032,China;China Railway seventh Bureau Group Co.,Ltd.,Zhengzhou,Henan 450016,China;College of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China)
出处
《施工技术（中英文）》
CAS
2023年第4期34-38,共5页
Construction Technology
基金
陕西省重点研发计划项目(2020SF-373)。
