西南交通大学学报2017，Vol.52Issue(3)：482-488,7.DOI:10.3969/j.issn.0258-2724.2017.03.007
不同网孔形状格栅加筋土界面特性试验研究
Experimental Study of Interface Behavior of Geogrids with Different Aperture Shapes
摘要
Abstract
In order to investigate the effect of aperture shape on the geogrid-soil interface behavior,tensile tests were conducted using two kinds of geogrids with triangular apertures and rectangular apertures,which are of similar aperture size and mechanical properties.The effect of aperture shape on the geogrid-soil interface behavior under different normal pressures and pullout test directions were analyzed in terms of the pullout resistance,shear strength of geogrid-soil interface,apparent friction coefficient and geogrid rib deformation.The results show that the geogrid with triangular apertures plays a better role than the geogrid with rectangular apertures in restraining the lateral displacement of soil.For the geogrid with triangular apertures,the peak values of friction angle in cases TX_0 and TX_90 were 48.2° and 38.2°,respectively,while the peak value of friction angle in case SS20 case was only 35.9°.The flexural deformation of different degrees was observed in the horizontal and diagonal ribs of the geogrid with triangular apertures during the pullout test,while the ribs of the geogrid with rectangular apertures mainly presented a tensile deformation.关键词
拉拔试验/网孔形状/筋土界面特性/土工格栅Key words
pullout test/aperture shape/geogrid-soil interface behavior/geogrids分类
建筑与水利引用本文复制引用
郑俊杰,周燕君,曹文昭,赖汉江,杨友彬..不同网孔形状格栅加筋土界面特性试验研究[J].西南交通大学学报,2017,52(3):482-488,7.基金项目
国家自然科学基金资助项目(51278216,51478201) （51278216,51478201）
