Study on Earth Pressure Behind Separated Barrel Structural Wall

Abstract

With the development of port shipping industry in China, barrel foundation structure is gradually applied in port engineering, especially in the case of large water depth and soft soil foundation under the sea. With the less scene workload, simple construction and short construction period, the structure has broad application prospects. The earth pressure distribution of barrel wall surface of double barrel structure is complex, so reasonably determining the barrel structure wall earth pressure calculation has a great significance for the stability of the structure. Through the numerical analysis of finite element method, establish the upper and lower barrel separation type barrel foundation finite element model, and conduct the finite element analysis of the model of barrel structure. Considering the influence of different backfill earth parameters on the earth pressure behind the wall, the corresponding earth pressure distribution curve is obtained, which is compared with the theoretical value and the reference used in Lianyungang project. The analysis results show that the barrel foundation with rubble machine tool connecting upper and lower barrels can be used in engineering, and the method of multiplying the theoretical value of earth pressure by the correction coefficient can be used to simplify the calculation. The correction coefficients of earth pressure under different soil conditions are given, which can be used as a reference for the design of barrel structures.