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为深入研究路基侧向变形,从理论上对其进行了分析和计算。目前国内外研究路基侧向变形,以及其对沉降的影响及计算修正等,大都基于数值模拟分析或模型分析,对于路基侧向变形量的计算及其与路基沉降的相关关系,鲜有理论上的分析和计算。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我、条形均布荷载、条形三角形分布荷载以及条形梯形荷载下的侧向变形理论解析解。对海南东环客运专线试验路堤侧向变形实测数据、数值分析计算结果、理论解析计算值三者进行对比,验证了解析解的准确性,为进一步考虑侧向变形对路基沉降进行修正提供依据。
In order to deeply study the lateral deformation of subgrade, it is theoretically analyzed and calculated. At present, the research on lateral deformation of subgrade at home and abroad, its influence on settlement and its correction are mostly based on numerical simulation or model analysis. For the calculation of subgrade lateral deformation and its correlation with subgrade settlement, Analysis and calculation. By integrating the lateral deformation solutions of the elastic semi-infinite body under the concentrated force of Boussinesq, the theoretical analysis of the lateral deformation under infinite linear load I, strip uniform load, strip triangular load distribution and strip shape trapezoidal load is derived solution. The experimental data of lateral deformation of the test embankment of Donghuan Passenger Dedicated Line in Hainan Province are compared with the results of numerical analysis and theoretical analysis. The accuracy of the analytical solution is verified and the basis for further considering the lateral deformation is given.