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基于梅河高速公路程江至华城段K20+638及K20+500处桥台加筋土台背处理方案,采用大尺寸直剪模型试验分析了土工格栅、土工格室加筋土以及土工格室加筋水泥稳定土接触面上的剪切变形特性,其剪应力-剪切应变曲线呈明显的非线性关系,采用邓肯-张双曲线模型能很好地反映土体的非线性特征,通过试验得到了土工格栅、土工格室加筋土界面的邓肯-张E-B模型参数,为今后土工格栅、格室加筋土桥台设计提供参考。
Based on the scheme of abutment reinforced earth abutments with K20 + 638 and K20 +500 abutments in Chengjiang-Chenghua section of Meihe Expressway, the geogrid, geocell reinforced earth and geocell reinforced The shear-stress-shear strain curve of the cement stabilized soil contact surface shows a significant nonlinear relationship. The Duncan-Chang hyperbolic curve model can well reflect the nonlinear characteristics of the soil. The experimental results show that Geogrid, geocell reinforced earth interface Duncan - Zhang EB model parameters for the future geogrid, cell room reinforced earth abutment design provides a reference.