摘要
在软~流塑状态泥炭质土地质环境下,基坑易发生边坡失稳、坑底隆起、蠕变等工程问题。本研究根据昆明某基坑边坡大变形实例,基于瑞典条分法,利用枚举法搜索最危险圆弧滑面,对滇池区域软~流塑状态泥炭质土中的基坑边坡进行了稳定性分析,结果表明场地周边的施工荷载是导致基坑边坡发生深层滑移破坏的主要诱因。软~流塑态泥炭质土地质环境下的基坑需重视周边附加载荷对基坑稳定性的影响。
In the soft-flowing peat soil geological environment,foundation pit is prone to slope instability,pit bottom uplift,creep and other engineering problems.According to a large deformation example of a foundation pit slope in Kunming and based on Swedish slice method,the most dangerous circular slip surface is searched by enumeration method.The stability of foundation pit slope in soft-flowing peat soil in Dianchi Lake region is analyzed.The results show that the construction load around the site is the main inducing cause of deep slip failure of foundation pit slope.Foundation pit in soft-flowing peat soil geological environment should pay attention to the influence of additional load on the stability of foundation pit.
作者
郭磊
李肖君
李云坤
蒲七
孔维俭
胡利韦
李志坚
王石权
Guo Lei;Li Xiaojun;Li Yunkun;Pu Qi;Kong Weijian;Hu Liwei;Li Zhijian;Wang Shiquan(YCIH No.12 Construction Co.,Ltd.,Kunming,650500;China Nonferrous Metals Industry 14th Metallurgical Construction Company,Kunming,650000)
出处
《建设科技》
2019年第22期88-93,共6页
Construction Science and Technology
关键词
软~流塑状态
泥炭质土
基坑
施工荷载
枚举法
深层滑移破坏
soft-fluid-plastic state
peaty soil
foundation pit
construction load
enumeration method
deep slip failure
