沿海软土地区桩基础受力与变形特性分析

Analysis of Stress and Deformation Characteristics of Pile Foundation in Coastal Soft Soil Area

文中利用数值仿真模型分析不同断面处桩的竖向位移、侧向位移、轴力以及剪力随桩体深度增加的变化规律。结果表明,随着桩深的增加,62号断面左侧桩竖向位移无变化;63号和64号断面左侧桩的竖向位移呈线性增加的变化规律,埋深每增加1 m,竖向位移分别增加0.0002、0.00019 m;左侧桩的剪力表现为先缓慢增加(0~15 m)、再剧烈增加(15~17.5 m)、最后降低(17.5~21.6 m)的变化规律;中间桩桩身剪力表现为先增加后降低再稳定的变化规律。

The variation of vertical displacement,lateral displacement,axial force and shear force of piles at different sections with the depth of piles is analyzed by means of numerical simulation model.The results show that the vertical displacement of pile on the left side of section 62 does not change with the increase of pile depth.The vertical displacement of piles on the left side of section No.63 and 64 shows a linear increase rule,and the burial depth increases 1 m,the vertical displacement increases 0.0002 m and 0.00019 m espectively.The shear force of the pile on the left side increases first(0~15 m),then increases(15~17.5 m)and finally decreases(17.5~21.6 m).The shear force of the middle pile increases first,then decreases and then stabilizes.