咸阳某小区CFG桩复合地基的有限元模拟

Finite Element Analysis of CFG Columns for a Residential Community in Xianyang

目前,CFG桩复合地基已广泛应用于多层、高层、超高层以及工业厂房等工程的地基处理中,并取得了非常好的工程成效和经济效益,但其相关的理论及设计方法还有待进一步完善,因此开展CFG复合地基相关理论及工作性状研究工作无疑具有重要的工程应用价值。从具体工程实例入手,利用ABAQUS软件进行了CFG桩复合地基在轴对称竖向荷载作用下的三维有限元模拟,并与现场静载荷试验结果进行对比,分析了二者偏差的原因。

The Cement-Fly Ash-Gravel（CFG）columns are widely used as the composite foundations in the building industry：multiple,high raised and super high raised buildings and industrial factories.Although this technique is proved to be cost effective with good engineering results,the theoretical aspects of the CFG method and its design methodology are still to be completed.It has a significant practical importance to conduct research work in the performance of the CFG columns.A three-dimensional finite element model of single column under axial symmetric loading condition by using ABAQUS is established and the results are compared with the in-situ static loading test results.The deviations between the simulated and the observed results are also discussed.