土袋技术加固膨胀土边坡数值模拟研究

英文篇名：Study on mechanism and numerical simulation of strengthening expansive soil with soil bags
中文刊名：江西理工大学学报
英文刊名：Journal of Jiangxi University of Science and Technology
作者：江学辉 ; 吴珺华 ; 彭明 ; 梅国雄
英文作者：JIANG Xue-hui1 ; WU Jun-hua1 ; PENG Ming2 ; MEI Guo-xiong1 ; 3(1.College of Civil Engineering and Architecture ; Nanchang Hangkong University ; Nanchang 330063 ; China ; 2.Jiangxi Transportation Research Institute ; Nanchang 330063 ; China ; 3.College of Civil Engineering ; Nanjing University of Technology ; Nanjing 210098 ; China)
中文关键词：土袋 ; 边坡稳定 ; FLAC3D ; 膨胀土
英文关键词：soil bag ; slope stability ; FLAC3D ; expansive soil
出版日期：2013-02-15
机构：南昌航空大学土木建筑学院;江西省交通科学研究院;南京工业大学土木工程学院;
年：2013
期：01
出版单位：江西理工大学学报

摘要

为提高膨胀土边坡的稳定性,采用了土袋技术加固方法.利用FLAC3D软件,基于强度折减法,对边坡稳定性进行分析.结果表明,未经处理的膨胀土边坡,安全系数很低,滑移量大,边坡处于失稳状态,若采用土袋技术加固膨胀土边坡,边坡整体稳定性得到较大提高,滑移量大大减小,滑弧形态由浅层滑动过渡到深层滑动,边坡处于稳定状态,考虑土袋与土袋之间的接触,与不考虑土袋之间的接触效果相比,最大水平位移明显减小,安全系数增大,处理前与处理后膨胀土边坡滑动破坏位置没有发生变化,就在坡脚附近,说明土袋技术可用于加固膨胀土边坡.
In order to improve the stability of expansive soil slope,the method of soil bag technology is adopted.The stability analysis could be carried out with FLAC3D based on strength reduction theory.The results of the study show that the safety factor is decreased and the maximum horizontal displacement is increased in comparison with expansive soil slope by soil bag technology.The slip shape is transformed into deep slip from superficial slip and the expansive soil slope by soil bag technology will be in stability.The maximum horizontal displacement is decreased and safety factor is increased compared with the situation when contact of the soil bags is not considered.When it is at foot of the expansive soil slope,the sliding failure of the expansive soil slope's position has not changed when expansive soil slope is handled with soil bag technology and without the technology.The method of strengthening expansive soil slope by soil bag technology is feasible.

引文

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