2024 Volume 10 Issue 48 Pages 1798-1803
In order to clarify the soil-pipe-joint interactions of steel pipe sheet piles (SPSP) under large deformation conditions, the current study conducted reproduction analysis of air and soiled (with ground model) lateral loading tests. The proposed method uses a hybrid element that consists of beam and solid element to exhibit the stiffness of the joint part and pipe part. A spring element connects the beam element of the joint part to model the mechanical behaviors of joint part that including compression, tension, vertical and horizontal shearing. The properties of pipe & joint, joint mechanical behaviors, and soils are determined by mechanical calculation, element tests, and triaxial compressive tests, respectively. It was found that in air condition, the stiffness of lateral load of SPSPs depends on the mechanical state of pipe part. In soils, the stiffness of lateral load of SPSPs was also influenced by the vertical shear failure of joint. The SPSP models in both air and soils follows a behavior that resistance mode shifted from grouped state to
independent state due to the vertical shear failure of joint. Improving the strength and resistance ability of the joint part against vertical shearing displacement is a reasonable approach to enhance the lateral bearing capacity of SPSPs with large deformation.
