Abstract

Info

Title:: Influence of Outside Load on Deformation Behavior of Foundation Pit Excavation in Soft Soil Area

Author(s):: LI Yu-qi; ZHOU Xuan; XIE Kang-he; Department of Civil Engineering, Shanghai University

Keywords:: foundation pit excavation; deformation; numerical calculation; horizontal displacement; ground settlement; soft soil area

Abstract:: Aimed at building materials, vehicles and other loads usually found near foundation pit excavation, based on Biots 3D consolidation theory, a 3D finite element program with considering fluidsolid coupling was developed. The influences of loading size, loading time and loading area on the horizontal displacement of supporting structure, ground settlement around the excavation and basal heave of the excavation were studied respectively. The results show that loading size has great influence on the horizontal displacement of supporting structure, ground settlement and basal heave; loading time and loading area have great influence on the horizontal displacement of supporting structure and ground settlement, however have little influence on the heave deformation of pit base. Therefore, the influence of load should be considered when designing an excavation.