A thermo-mechanical model for pile-soil interface behavior. Issue 7 (October 2021)

• Record Type: Journal Article
• Authors: Wang, Xiaoqiang; Wang, Jingkai; Zhang, Zhichao
• Is Part Of: IOP conference series. Volume 861:Issue 7(2021)
• Publication Date: 2021-10
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/861/7/072145
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: This study proposes a constitutive model of the pile-soil interface based on a thermodynamic approach. Firstly, the thermo-elastic coupled nonlinear hyperelastic relation of the pile-soil interface is derived by defining the interface potential energy function of the pile-soil interface subjected to normal and tangential forces. The plastic interface constitutive relations are then developed using non-equilibrium thermodynamics, based on the energy dissipations caused by the pile-soil interface's shear-induced slipping behavior. The stress- and temperature-dependent pile-soil interface behavior is described using the concept of interface density and the normal elastic thermal expansion coefficient.