Determination of maximum pile spacing of anti-slide pile with rectangular section considering soil arching effects

Abstract

The reasonable determination of pile spacing is an important link in the design of anti-slide pile. At present, there are many research results on the calculation method of maximum pile spacing of anti-slide pile. Due to different assumptions, different angles of analysis, and different complexity of the formula, the calculation results are quite different, and the research results have not been widely popularized. In this study, taking into account the whole soil arching as the research object, the formulas for calculating the maximum pile spacing of the anti-slide pile based on the soil arching effect behind piles or between piles are put forward considering the overall mechanical balance condition and strength condition of the soil arching, and its rationality is verified by an engineering example. Through calculation and analysis, it is considered that the soil arching between piles controls the maximum pile spacing of anti-slide pile. Through the comparison and analysis with the previous research, the results showed that the calculation formula in this paper is reasonable, feasible and simple, and is convenient for popularization and application in actual engineering.