论文部分内容阅读
目的探讨初始含水率对重塑黏性土压缩性状的影响,建立土结构性对天然沉积黏性土力学性状影响的定量评价基准.方法设计加工了适用于高初始含水率重塑黏性土固结试验的轻型固结仪,针对具有不同初始含水率的连云港黏性土重塑样进行了大量的一维固结试验.结果对连云港黏性土而言,当固结压力低于约25 kPa时,采用孔隙指数不能将不同压缩曲线归一化;而超过25 kPa后,各压缩曲线均可以较好的进行归一化至重塑土的固有压缩曲线上,且固有压缩参数e1*00、Cc*与w0/wL之间存在良好的线性关系.结论得到了一簇对应不同初始含水率连云港重塑土样的压缩曲线,初始含水率高的重塑样压缩曲线位于含水率低的压缩曲线之上,表明初始含水率对重塑土压缩性状有着显著影响.
Aim To investigate the effect of initial water content on the compressive properties of the remolded clay and to establish a quantitative evaluation criterion of the effect of soil structure on the mechanical properties of the natural sedimentary clay.Methods The method was designed and applied to rebuild cohesive soil with high initial moisture content Results of the Lianyungang cohesive soil, the consolidation pressure of less than about 25 kPa for Lianyungang clay cohesive soil samples, , The different compressive curves can not be normalized by using the pore index. When the compressive stress exceeds 25 kPa, the compression curves can be normalized to the intrinsic compression curve of the remolded soil well, and the intrinsic compression parameters e1 * 00, Cc * and w0 / wL have a good linear relationship.Conclusion A cluster of compressive curves corresponding to Lianyungang remodeling soil samples with different initial water cut-offs is obtained.The compression curves of remolded samples with high initial moisture content are located in the compression curves with low moisture content Above, indicating that the initial moisture content has a significant impact on the compression properties of remodeled soil.