收稿日期: 2015-12-04
网络出版日期: 2016-10-31
基金资助
国家自然科学基金资助项目(51478255, 51678352); 上海市自然科学基金资助项目(14ZR1416100)；浙江省重点科技创新团队资助项目(2011R50020)
Direct shear behavior of reinforcement soil interface in different geosynthetics
Received date: 2015-12-04
Online published: 2016-10-31
刘飞禹1, 沈春春1, 王军2,3, 王攀1 . 不同土工合成材料加筋土界面的静动力直剪特性[J]. 上海大学学报(自然科学版), 2016 , 22(5) : 637 -647 . DOI: 10.3969/j.issn.1007-2861.2016.01.016
To investigate the reinforcement soil interface cyclic and post-cyclic shear behavior in different geosynthetic materials (woven geotextile, nonwoven geotextile, geomembrane), a series of direct shear tests, cyclic shear tests and post-cyclic direct shear tests were performed through a large-scale direct shear device. Comparison and analysis were made between the results from direct shear tests and post-cyclic direct shear tests. In the direct shear tests, the interface shear stress-displacement curve presented large difference due to different material mechanical properties and structural characteristics. More evident deformation was observed in higher vertical stress. Cyclic shear stress degradation was observed in both woven and nonwoven geotextile-sand interfaces, whereas hardening phenomenon appeared in the geomembrane-sand interface.
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