基于离心模型试验的土工格室柔性挡墙破坏机理研究

   1,杨永峰2

1.西安公路研究院,陕西 西安710065

(2.中国有色金属工业西安勘察设计研究院,陕西 西安710054)

  要:土工格室柔性挡墙作为一种新型支挡结构,具有结构轻、施工简便、造价低廉、生态保护和美化景观等优势,在公路边坡防护中具有广阔的应用前景。本文建立了土工格室柔性挡墙离心模型,通过离心模型试验研究了土工格室柔性挡墙的破坏机理,讨论分析了高宽比变化、坡度变化、填土面作用荷载、二级挡墙和加筋等因素对于挡墙破坏模式的影响。研究成果对于工程实践和理论研究具有一定的参考价值。

关键词:土工格室柔性挡墙;破坏机理;变形规律;离心模型试验

中图分类号:U419        文献标识码:A

 

Centrifugal model study on the failure mechanism of geocell flexible retaining wall

JIANG Li1,  YANG yong-feng2

1.Xi’an Highway Research Institute,Xi’an 710065,China;

2. Xi’an Engineering Investigation and Design Research Institute of China National Nonferrous Metals Industry, Xi’an 710054,China)

Abstract: Due to its advantages of light structure, simple construction, low cost, ecological protection and landscape beautification, the geocell flexible retaining wall, as a new type of retaining structure, has a broad application prospect in the road slope protection In this paper, the model of geocell flexible retaining wall was established and a series of centrifuge model tests were conducted to investigate its failure mechanism On the basis of the analysis of the test results, the effect of such factors as the height width ratio, slope gradient, surcharge, subsection and the reinforcement on the failure mode of the geocell flexible retaining wall were studied and discussed.The research results were referable for the engineering practices and scientific research.

Keywords: flexible geocell reinforced retaining wall; failure mechanism; deformation law; centrifugal model test