摘要
废弃轮胎橡胶颗粒按不同掺量与吹填软土均匀混合,配置成混合土样,进行不同固结压力下的直接剪切试验,得到相应的剪应力与剪切位移的关系,分析了废弃轮胎橡胶颗粒掺量对吹填软土抗剪强度的影响,提出不同掺合比下供参考的抗剪强度指标。结果表明：随着废弃轮胎橡胶颗粒掺量的增加,吹填软土-橡胶颗粒混合土的内摩擦角呈现先减小后增大的趋势;而黏聚力呈现先增大后减小的趋势。但抗剪强度的总趋势是随橡胶颗粒掺量增加而增大,剪切位移达到3-5mm之后,剪切强度基本保持不变。
Simple shear tests under different concretion pressures were conducted on the mixed soil samples of soft dredger fill and scrap tire chips according to different proportions and the corresponding relations between shear stress and shear displacement were drawn. Based on this, the effects of scrap tire chips on the shear strength of soft dredger fill were analyzed and referential shear strength index for different blend ratios was proposed. Test results show that with the increase of scrap tire chips, the internal friction angle of the mixed soil first decreases and then increases, while the cohesion of the mixed soil first increases and then decreases. However, the shear strength tends to increase with the increase of scrap tire chips and it remains unchanged after the shear displacement reaches 3-5 mm.
出处
《山东科技大学学报（自然科学版）》
CAS
2015年第4期102-106,共5页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51379118)
山东科技大学科研创新团队资助(2012KYTD104)
