| As a new retaining system, the soil is more and more widely used in our country. It is a kind of economic, reliable technology and is convenient in construction. But the method of its design analysis is not perfect yet, and the study on its reliability, deformation and displacement is also very poor.Based on the past researches, the paper analyzes the entire stability of the soil nail further, especially its inner stability. Various methods of stability analysis in and outside China are compared and appraised, then, the advantage and disadvantage of the various methods is summed up.Since traditional certainty methods have some instinct limitations, on the basis of author's design practice of many years, this paper comprehensively considers the uncertainty of the friction strength value between the nail and soil owing to construction. The force analysis, entire stability, inner stability and outer stability of the soil-nail retaining structure is analyzed in reliability, and then the convenient design method of soil-nail retaining is obtained. Furthermore, this paper also elicits some disciplinary conclusions by studying the design and construction of a concrete project. So it can offer some reference and evidence to the design, construction and monitoring of the soil-nail retaining system. |
