考虑侧向变形的地基沉降修正研究

Study of the Settlement Correction of the Subbed Soil Considering the Lateral Deformation

以Ansys有限元程序为计算手段,利用沪宁高速公路资料,取得多组不同土质的路基在其他条件相同时,分别考虑侧向变形与不考虑侧向变形时的沉降值,通过对这些数据进行统计分析,得到了一个与填土高度及土体的主要物理指标有关的沉降近似修正公式:Ms=(1.1+0.015H)(0.82+0.176e),并以沪宁高速公路的资料进行验证,证明将修正公式应用于e-lgp法计算是合理、可行的。

According to many settlement data of the subgrade with different quality of soil at all same conditions（considering the lateral deformation and not at the same time） of HuNing expressway, this text did calculation with Ansys. By statistic analyzing these data,we got a approximate modified formula of settlement which has relation to the fill depth and the major physical index of the soil body： Mr = （1.1 ＋ 0. 015H）（0.82 ＋ 0. 176e ）. We identifed the approximate modified formula of settlement with HuNing expressway,and it indicated that it is reasonable and feasible to apply this formula to the e -lgp method.