相对密实度对沈阳砾砂峰值强度影响

发布时间：2018-06-19 04:24

本文选题：沈阳砾砂 + 相对密实度　；参考：《辽宁工程技术大学学报(自然科学版)》2017年06期

【摘要】：为研究土体扰动过程中相对密实度与峰值强度的关系,针对沈阳地区砾砂,分别对不同相对密实度重塑样进行不同围压下的三轴固结排水剪切试验,得到砾砂Duncan-Chang模型的相关参数.随后,探讨了沈阳地区砾砂的峰值强度受相对密实度D_r的影响规律,并应用数学手段对过程参数M与D_r的关系进行拟合.结果表明:过程参数M与相对密实度D_r之间大致呈线性关系,以此建立砾砂峰值强度与相对密实度D_r的联系;而过程参数受到相对密实度D_r的影响很小,可近似认为l不随D_r变化.
[Abstract]:In order to study the relationship between the relative density and the peak strength during the soil disturbance, the three axis consolidation and drainage shear test under different confining pressure for different relative density remolding samples in Shenyang area was carried out to obtain the relative parameters of the gravel sand Duncan-Chang model. Then, the peak strength of the gravel sand in Shenyang area was investigated by relative density. The relationship between the process parameters M and D_r is fitted by mathematical means. The results show that the relationship between the process parameter M and the relative density D_r is approximately linear, so as to establish the relation between the peak strength of the gravel sand and the relative density D_r, and the process parameters have little influence on the density of the density D_r, which can be approximately considered not to be L. Change with D_r.
【作者单位】：中国建筑东北设计研究院有限公司;
【基金】：国家自然科学基金(51204029)
【分类号】：O344.1

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