摘要
基于强度折减法建立土洞模型进行计算,发现对于不同的计算条件,得到的土洞破坏模式基本相似,都是沿着土洞边缘产生滑移破裂,与调查结果一致。在总应力形式下,使用极限分析和强度折减法计算得到的安全系数基本一致,表明强度折减法具有可靠性。但在有效应力形式下,使用强度折减法将得到偏大的安全系数。
The strength reduction method is used in this paper to establish the soil cave model. It is found that for different calculation conditions,the failure modes of the soil holes are basically similar,and all of them are slipping along the edge of soil hole,which is consistent with the investigation results. In the total stress form,the safety factor calculated by the limit analysis and the strength reduction method is basically the same,indicating that the strength reduction method is reliable. But in the effective stress form,using the strength reduction method will get a large safety factor.
出处
《内蒙古公路与运输》
2016年第6期9-12,共4页
Highways & Transportation in Inner Mongolia
关键词
土洞
强度折减法
安全系数
稳定性
soil cave
strength reduction method
safety factor
stability
