加筋风积沙挡墙工作机理的离心模型试验

采用能够完全满足模型相似律的离心模型试验方法,基于整体刚性面板加筋土挡墙结构,研究加筋风积沙挡墙的变形、加筋材料的应变分布等加筋风积沙挡墙的工作机理。试验分析结果表明:在一定范围内,加筋层竖向间距越小,加筋效果越好;加筋材料合理铺设方式应为从回填区底部至上部使加筋材料长度由短变长;同一加筋层拉应变呈中部大、两端小的分布形式。此外,在进行加筋风积沙挡墙的内部稳定性验算时,应注意加筋材料被拔出的可能性。

Centrifuge Modeling Test to Working Mechanism of Reinforced Aeolian Sand Retaining Wall

Centrifuge modeling test method satisfying with modeling similar law thoroughly was used.Based on reinforced soil retaining wall structure of whole rigid panel,deformation of reinforced aeolian sand retaining wall,strain distribution of geosynthetics and working mechanism of reinforced aeolian sand retaining wall were researched.It is shown that in a specific range,the closer of upright interval of reinforced layer,the better of effect;reasonable form of laying on geosynthetics is from short below to long on top in filling area;strain in a geosynthetics is big in central and small in two sides.Moreover, possibility of pulling out geosynthetics should be noticed in checking interior stability of reinforced aeolian sand retaining wall.