Numerical simulation of excavation deformation of deep foundation pit and analysis of influencing factors
To reveal the deformation characteristics of the soil nail and pile anchor support structure in deep ex-cavations,taking the deep excavation project of an underground parking lot in Zhengzhou as an example,this study investigates the horizontal displacement,vertical displacement,and deformation patterns of the support structure through field monitoring and numerical simulation.It analyzes the effects of different pile diameters and lengths on the deformation of the support structure.The results show that as excavation progresses,the maximum horizontal displacement of the support piles gradually transitions from the top of the pile to the pile body,exhibiting a"bow-shaped"change pattern.The maximum settlement at the base of the excavation rea-ches 13.5 mm,with the maximum uplift being 33.7 mm.Increasing the pile diameter can effectively control the displacement of the pile body,while increasing the pile length has a relatively weaker effect on controlling the horizontal displacement of the pile body.
soil nail pile anchorexcavation of foundation pitdeep foundation pitnumerical simulation
万方数据
维普
