考虑路基侧向变形的沉降计算方法

Calculation Method of the Embankment Settlement in Consideration of the Lateral Deformation

路基侧向变形的计算,以及侧向变形对路基沉降的影响,鲜有理论上的分析和计算,大都基于数值模拟或模型分析。为了深入研究路基侧向变形,通过对Boussinesq的集中力下弹性半无限体的侧向变形解进行积分,推导出无限长线性荷载、条形均布荷载、条形三角形分布荷载以及梯形荷载下,地基的侧向变形理论解析解,通过实测数据验证了解析解的准确性,并提出考虑地基侧向变形的路基沉降计算方法,提高了沉降计算精度。

There were rarely the theoretical analysis and calculation for the ground lateral deforma-tion,and how the lateral deformation affects on the embankment settlement,which mostly studied by nu-merical analysis or model-based analysis.For deeply researching the ground lateral deformation,theoreti-cal analysis and calculation were carried on.By integrated the Boussinesq’s lateral deformation solution of elastic semi-infinite which loaded on concentrated force,the lateral deformation theory analytic solution was deduced when the ground was loaded on infinite linear load,trip uniformly distributed load,strip tri-angular distributed load and strip trapezoidal load.The accuracy of theoretical analytical solution was ver-ified by compared with measured value,and calculation method of the railway embankment settlement in consideration of the lateral deformation was proposed,which can improve the accuracy of the settlement calculation.