For the lime modified carbonate rock soil road subgrade of port highway, after the lime modified carbonate rock filler is used to treat it, the particle discrete unit has the characteristics of sparsity, and the particle gradation is caused by the seepage of soil mass, and with the increase in load, overload load occurs. It is therefore necessary to establish relevant mathematical models to analyze the load variation of lime‐modified carbonate roadbed under boundary conditions. The probability mathematical model of the load overload of lime‐modified carbonate fill was studied, and a feasibility analysis model of lime‐modified carbonate soil used in port city highway subgrade filling was put forward based on the discrete hysteretic characteristic curve method. The load characteristics of lime‐modified carbonate soil were analyzed within the limited area distribution range of adjacent two holes. The load energy transfer model of lime‐modified carbonate packing in foundation soil was analyzed in PFC3D software. The foundation stress reinforcement method was used to improve the carbonate soil foundation construction and, combined with the seepage model of the radial consolidation of the foundation, a filling feasibility analysis of the urban highway subgrade of lime‐modified carbonate soil port was carried out. The simulation results show that this method can effectively realize the load overload analysis of lime‐modified carbonate packing, improve the load capacity of subgrade filler for port city highway, and improve the load property of highway subgrade of port city. Keep the soil particles in close contact. This study provides a feasible basis for future highway construction and the application of lime‐modified carbonate.

中文翻译：

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石灰改性碳酸盐土用于高速公路路基填筑的可行性

对于港口高速公路的石灰改性碳酸盐岩土路基，采用石灰改性碳酸盐岩填料进行处理后，颗粒离散单元具有稀疏性的特征，颗粒的级分是由土体的渗流引起的，随着负荷的增加，发生过载负荷。因此，有必要建立相关的数学模型来分析边界条件下石灰改性碳酸盐路基的荷载变化。研究了石灰改性碳酸盐填料超载的概率数学模型，并基于离散滞后特性曲线法，提出了港口城市公路路基填料用石灰改性碳酸盐土的可行性分析模型。在相邻两个孔的有限面积分布范围内分析了石灰改性碳酸盐土壤的荷载特性。在PFC3D软件中分析了石灰改性的碳酸盐填料在地基土中的载荷能传递模型。采用地基应力加固法改善碳酸盐土壤基础施工，结合地基径向固结的渗流模型，对石灰改性碳酸盐土壤港口城市公路路基进行填筑可行性分析。仿真结果表明，该方法可以有效地实现石灰改性碳酸盐填料的载荷超载分析，提高港口城市公路路基填料的承载能力，提高港口城市公路路基的荷载性能。保持土壤颗粒紧密接触。该研究为将来的公路建设和石灰改性碳酸盐的应用提供了可行的基础。