CFG桩网结构地基加固处理路基变形规律研究

以武广客运专线典型路基断面为例,对路基沉降变形进行监测,结合实测沉降曲线对沉降规律进行探索,并利用曲线拟合法对路基沉降进行预测.预测结果表明:CFG桩复合地基剩余沉降最大值5.6 mm;双曲线法预测的沉降曲线与实测数据比较接近;路基的工后沉降与填土高度存在一定的相关性.

Study of the Laws of the Treatment of the Deformation and the Consolidation of the Sub-Grade of the Railway with the CFG Pile Network Structures

With the typical cross-section of the sub-grade of the Wu-Guang Passengers-oriented Railway as a practical example,the deformation and the settlement of the sub-grade is monitored,upon the basis of which the laws of settlement of the sub-grade is explored in the paper,with the real measured results of the settlement curves taken into account and compared.By means of the curve-fitting method,the settlement of the sub-grade is predicted.The results of the prediction show that the maximum remaining settlement value of the sub-grade consolidated with the CFG pile-network structures is 5.6 mm;the settlement values measured by the hyperbolic method are found quite close to the real measured values,and the post-construction subsidence and the depth of fill are found interrelated.