【摘要】 为研究CFG桩对大型油罐软弱地基的加固机制,利用FLAC3D模拟分析CFG桩复合地基倾斜、沉降和加固特性,并采用单一变量法分析不同参数对CFG桩复合地基沉降的影响。结果表明:CFG桩复合地基能够有效地限制罐体的平面倾斜、非平面倾斜、平面沉降和非平面沉降,并有效地限制上部荷载的作用范围和地基隆起的产生;水平位移的最大值出现在地基底面处;CFG桩复合地基中,桩长和桩间距是控制竖向沉降和加固效果的主要因素。更多还原

【Abstract】 To study the soft foundation reinforcing of the large oil tank,the inclination,settlement and reinforcement characteristics of CFG pile composite foundation were studied by FLAC3D.The effects of different parameters on the settlement of CFG pile composite foundation were studied using single variable method.The results show that CFG pile composite foundation can effectively restrict the plane tilt,non-plane tilt,plane settlement and non-plane settlement of tanks,and it can effectively reduce sphere of action of upper loads and restrict ground swell.The maximum horizontal displacement is at the bottom surface of the foundation.Pile length and spacing are the main factors controling the vertical settlement and reinforcement effect.更多还原