山西某高速公路软基稳定性分析及处理

The Stability Analysis and Its Treatment on the Soft Foundation of an Expressway in Shanxi

山西汾河平原区软土有其不同于一般海相、湖相软土的特点[1]。基于极限平衡理论,针对依托工程京昆与青兰国家高速公路山西境临汾联络线软基处理工程,通过分析软基的物质成分、软土的有关力学参数,以现场实测数据为依据,建立有效的有限元数值模型。在此基础上,与实际监控量测数据进行对比分析,对比得出结构安全,经济合理的处治方案,达到了加固软基的目的,为以后山西汾河平原区软土地基处理工程中地基处理方案的选择提供了参考。

The soft soils in Fenhe Plain Region of Shanxi have the features different from those of ordinary marine and lacustrine soft soils. Based on Limit Equilibrium Theory and relying on soft foundation treatments of Linfen Tie Line in Shanxi of Jingkun Expressway and Qinglan Expressway, this paper established the effective finite element numerical model by analyzing the material composition and relevant mechanical parameters of the soft soils on the basis of the field test data. On this basis, contrastive analysis was done with the actual monitoring and measurement data to obtain disposal methods with structure safety and economic rationality, which achieved the goal of strengthening soft foundation and provided reference for selection of foundation treatment schemes regarding the soft soil foundation treatment projects in Fenhe Plain Region of Shanxi in future.