塑性混凝土防渗墙土反力系数反演

塑性混凝土防渗墙内力分析及变形规律中的土反力系数通常采用原位试验确定，该法复杂的影响因素和对统计经验的依赖，使得测定值的准确度较差。利用相关理论及现场监测信息进行反演研究，能够给出一种相对准确的土反力系数值的研究思路。以某工程在既有塑性混凝土防渗墙上浇筑钢筋混凝土防渗墙加固改造工程为依托，借助钢筋混凝土防渗墙两侧的填土碾压工程监测信息和工程基础中的m法，对塑性防渗墙两侧土反力系数进行反演分析研究。建立塑性混凝土防渗墙土反力系数的解析方程，给出施工对塑性混凝土防渗墙土反力系数的影响规律，以及有效的反演确定方法及思路，为防渗墙内力及变形规律的准确分析奠定基础。

Inversion analysis of soil resistance factor of plastic concrete cut-off wall

The soil resistance factor in the internal force analysis and deformation law of plastic concrete cut-off wall is widely obtained by local testing. That the test method has the influence of the complex factors and relies on experience makes the poor accuracy of determination value. This paper gives a method of relatively accurate numerical of soil resistance factor using related theory and field monitoring information. Depending on a reinforcement project that ferroconcrete cut-off wall is concreted on the original plastic cut-off wall; the soil resistance factor is inverted by combining the backfill soil monitoring information with method in the engineering foundation. It gives the analytic equation, influence law in the construction and effective thought about inversion, which establishes the foundation of accurately analyzing the internal force and deformation of cut-off wall.