包裹式加筋土挡墙的变形特性及影响因素研究

 通过离心模型试验和FLAC2D数值模拟，研究软土地基包裹式加筋土挡墙的变形特性及其影响因素。离心模型试验表明，包裹式加筋土挡墙工后的侧向变形较小，包裹式的加筋墙面起到了传统面板的作用。采用基于离心模型试验的FLAC2D数值模拟，通过改变筋材的长度、布置间距(竖向)和刚度，探讨三者对挡墙变形特性的影响，结果表明，筋材的布置间距对挡墙变形的影响最显著，在实际工程中3个参数都应该控制在一定范围内。研究结果可为相关工程提供一定的参考及建议。

DEFORMATION CHARACTERISTICS AND INFLUENCE FACTORS OF WRAP REINFORCED RETAINING WALL

The deformation and the influence factors of the wrap reinforced retaining wall located on the soft soil foundation was carried out by the method of centrifugal model test and numerical simulation with FLAC2D. The centrifuge model test showed that the lateral deformation of the wrapped reinforced retaining wall was small and the wrapped reinforced retaining wall acted as a traditional panel. The effects of length and vertical spacing and stiffness of geosynthetics on the deformation of the retaining wall were analyzed in the numerical simulation with FLAC2D and the centrifugal model tests respectively. The results of the numerical and experimental study showed that the vertical spacing of geosynthetics is the most significant factor influencing the deformation of the retaining wall，and these three parameters should be controlled in a certain scale in the actual projects.