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为了研究桥台路基结构的数值模拟计算方法,该文在考虑土的固结和土体的非线性应力应变关系的基础上,利用非线性有限元数值方法对土工织物加筋柔性台背路基的受力性状和破坏机理进行了分析。分析结果表明,将铺有土工合成材料的桥台路堤,看作由土体、土工合成材料、土体-土工合成材料界面组成的、独立的平面应变三层连续体系,进行数值计算是行之有效的。计算显示,加筋可以明显使台背位移分布趋于均匀化,显著减轻由于台背密实度不足造成路堤的差异沉降。现场监测表明,该文采用的数值模拟方法与实际工程具有一致性。
In order to study the numerical simulation method of the abutment subgrade structure, based on the nonlinear relationship between soil consolidation and soil nonlinear stress-strain relationship, the nonlinear finite element method Mechanical properties and failure mechanism were analyzed. The results show that the abutment embankment with geosynthetics is regarded as an independent plane strain three-layer continuous system composed of soil, geosynthetics and soil-geosynthetics interface. Effective. The calculation shows that the reinforcement can obviously make the displacement distribution of the back of the bench become more uniform, and the differential settlement of the embankment due to the insufficient density of the back of the bench can be significantly alleviated. On-site monitoring shows that the numerical simulation method used in this paper is consistent with the actual project.