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通过对西北黄土地区地基承载力及其主要影响因素分布规律的研究,进行了黄土地区地基承载力的分区,确定了黄土地基处理的原则和选取方法。在此基础上,建立了基于G IS的黄土地区公路地基承载力评价系统。该系统利用G IS的数据分析和属性数据管理功能,在收集的大量实测载荷试验数据和相应物理力学指标的基础上,建立了各区域承载力统计回归关系式与样本点的动态数据连接库,实现了对黄土地区公路地基承载力的有效评价。同时,利用地基处理的分析软件,结合公路路基的设计情况,提出了对黄土地基的处理建议,为公路部门的地基承载力评价和黄土地基处理提供了决策依据。
Through the study of the bearing capacity of foundation and the distribution of its main influencing factors in the loess region of Northwest China, the bearing capacity of subsoil of loess area is studied. The principle and selection method of loess foundation treatment are determined. Based on this, a GIS-based evaluation system of roadbed bearing capacity in loess area is established. The system uses GIS data analysis and attribute data management functions. Based on a large amount of measured load test data and corresponding physical and mechanical indicators collected, this system establishes the dynamic data connection library of the statistical regression relationship and sample points of bearing capacity of each area, The effective evaluation of bearing capacity of highway subgrade in the loess area has been realized. At the same time, based on the analysis software of foundation treatment and the design of highway subgrade, the suggestions for the treatment of loess foundation are put forward, which provide the decision-making basis for the evaluation of subsoil bearing capacity and the treatment of loess ground in the highway department.