摘要
针对土工格室加筋后的橡胶砂研究的缺乏,对此加筋橡胶砂进行了直剪和固结变形对比试验研究。分别针对橡胶颗粒质量分数为20%和30%的2种配合比的橡胶砂进行了研究,得到了剪应力-剪应变曲线、竖向位移-剪切位移曲线以及固结压力-沉降曲线。试验结果表明:土工格室加筋使得橡胶砂的强度有较大提高,且对粘聚力的提高明显,对摩擦角的影响较小;土工格室加筋能显著降低橡胶砂的剪胀和剪缩变形,能显著减少橡胶砂的竖向压缩变形;橡胶砂的橡胶颗粒含量越大,加筋效应越明显。
As lack of research of geocell reinforced rubber-sand mixture（RSM）, the direct shear and consolidation deformation experiments are conducted on the reinforced RSM. The reinforced RSMs with rubber mass content of 20% and30% respectively are studied, and the shear stress-shear strain curve, the vertical displacement-shear displacement curve and the consolidation pressure-settlement curve are obtained. The result indicates that： the strength of RSM is greatly enhanced by the reinforcement of geocell, specifically the cohesive factor is significantly improved and the friction angle is slightly affected. After the reinforcement by geocell, the shear contraction and dilatancy of RSM decrease significantly,as well as the vertical deformation under consolidation reduces obviously. The effect of reinforcement by geocell increases with the mass content of rubber in RSM.
出处
《湖南工业大学学报》
2014年第2期28-32,51,共6页
Journal of Hunan University of Technology
关键词
橡胶砂
土工格室加筋
抗剪强度
剪胀
rubber sand mixture（RSM）
geocell reinforced
shear strength
dilatation
