Abstract
Pile-soil interaction is considered to be one of the most important problems in the study of the mechanical behaviour of pile foundation. In this paper, the lateral friction resistance and pile-soil relative displacement of bridge piles in deep soft soils are monitored for an extended period by using concrete strain gauges that are embedded in the test pile. Field test results show that both the pile lateral frictional resistance and pile-soil relative displacement increase along with time, while the pile-soil interaction demonstrates a time effect. Therefore, an elastic-viscoplastic constitutive model must be established to better simulate the time-dependent mechanical behaviour of the pile-soil contact. Based on the Goodman model, we developed an elastic-viscoplastic interface constitutive model of the pile-soil interface into the FRIC subroutine through ABAQUS software, which is one of the most commonly used finite element analysis softwares in the world, to simulate a well-recorded pile test in deep soft soils. The calculated pile lateral frictional resistance and pile-soil relative displacement are close to the measured values, and the ability of the interface model to describe the changes in the shear stress-strain of the pile-soil interface along with time is validated.
Highlights
Pile-soil interaction is one of the most difficult problems in the field of geotechnical engineering
The numerical simulation of the mechanical behavior of the pile-soil interaction focuses on two aspects, namely, the interface element and the interface constitutive model or the relationship between the shearing stress and shear deformation of the pile-soil interface
We found out the rule of
Summary
Pile-soil interaction is one of the most difficult problems in the field of geotechnical engineering. The numerical simulation of the mechanical behavior of the pile-soil interaction focuses on two aspects, namely, the interface element and the interface constitutive model or the relationship between the shearing stress and shear deformation of the pile-soil interface. It is very necessary to establish a pile-soil interface constitutive model to better simulate the time-dependent mechanical behaviour of the pile-soil contact. Based on the time-dependent rule of the pile-soil interaction, a pile-soil interface elastic-viscoplastic constitutive model is proposed and developed into the FRIC subroutine in ABAQUS. The proposed model can be used to better simulate the pile foundation engineering problems by the finite element method
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
