黄土地区高填方段挡土墙变形区的数值模拟研究

Numerical Simulation Study on Deformation Zone of Retaining Wall in High Fill Section in Loess Area

采用工程地质调查、钻探、取样分析以及室内数值模拟等方法,对某黄土高填方挡土墙变形进行了研究,查明了典型黄土高填方变形区线性挡土墙变形方式,揭示了填方场地的变形规律,将抗拉与抗剪作为挡土墙破坏判据,分析总结了挡土墙的力学特征与变形规律。通过对挡土墙与填方土体的相互作用分析,指出了高填方挡土墙破坏机理,并根据高填方场地挡土墙受力与变形特点,对挡土墙设计提出了相关建议。

This paper studies the deformation of the high-fill retaining wall by means of engineering geology investigation, misering, sampling analysis and indoor numerical simulation to determine deformation mode of linear retaining wall in typical loess high-fill deformation zone and the deformation laws of the filled site. This paper analyzes and summarizes the mechanics characteristics and deformation law of retaining wall by taking the tensile and shearing resistance as a criterion for retaining wall＇s damage. By analyzing the interaction between the retaining wall and the backfill, the failure mechanism of high-fill retaining wall is pointed out. This paper proposes relevant suggestions on retaining wall design in accordance with the mechanical and deformation characteristic of retaining wall at high-fill site.