Research on the Bearing Capacity of Double Row Steel Sheet Pile Reinforcement Depth of the Based on Soil between Piles

Abstract

With the complex force characteristics of double row steel sheet pile retaining structure. Through the PLAXIS 3D finite element model is established, the soil with HS-Small constitutive model, the cement soil reinforcement of double row steel sheet pile support retaining structure of pile soil, the simulation and analysis of the soil between piles reinforcement depth of double row steel sheet piles by the force and displacement. Analysis shows that with the increase of reinforcement depth:1） before and after the peak displacement of two rows of steel sheet pile becomes smaller; 2）outside row of pile axial force variation trend of different;3） outside row of steel sheet pile peak shear force and bending moment increases first and then decreases; 4）the peak reached maximum value when the reinforcement depth have different; 5）internal row pile internal force of absolute value was significantly larger than that of the outer row of piles, should according to the actual needs of the project using the appropriate reinforcement depth.