Abstract
This paper starts from the mechanism of the coupled effect of consolidation and creep of soft soil, regarding the effect of time, adopting time hardening and Druker-Prager yield criterion coupled creep model, studies the variation law of the excess pore water pressure of soil with time after foundation pit excavation through numerical simulation. The results show that unloading of foundation pit excavation will produce negative excess pore water pressure in the pit bottom and surrounding soil, and the maximum pore water pressure (absolute value) will occur in the center of the foundation pit; after the the excavation completion of the foundation pit, the pore water pressure is continuously dissipated, and the pore pressure of the soil before the pit is dissipated faster, while the soil behind the pit is relatively slow. The excess pore water pressure after dissipation is basically the same as the ultra-static pore pressure when the excavation is completed; due to the impermeability of the underground continuous wall, the pore pressure boundary is very complicated, resulting in a sudden change of the excess pore water pressure behind the wall front wall.
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.
