Microstructural changes in soft quick clay at failure
Microstructural changes in soft quick clay at failure
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DOI：
10.1139/t70-001
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发表时间：
1970-02
影响因子：
3.6
通讯作者：
R. Pusch
中科院分区：
文献类型：
--
作者：
R. Pusch
在海相上进行了一系列的无侧限压缩试验，提取了快速粘土和小试件进行了微结构研究。自然微结构模式的特征是由颗粒链接连接的小集合体组成的网络。随着剪切变形量的增加，链段相继断裂，形成磁区状颗粒群。在宏观剪切区，剪切力倾向于使骨料定向和变形，骨料在剪切过程中表现为一定应力水平的刚体。剩余强度的概念可以对应于其中大部分链路已经断裂而聚集体仍然完好无损的状态。
A series of unconfined compression tests has been made on a marine, quick clay and small specimens were extracted for microstructural investigation. The natural microstructural pattern was characterized by a network of small aggregates connected by links of particles. The links broke down successively at increasing shear deformation and formed domain-like groups of particles. In the macroscopic shear zone the shear forces tended to orient and deform the aggregates.The aggregates behaved as rigid bodies to a certain stress level during the shear process. The concept of residual strength may correspond to the state where the majority of the links have been broken while the aggregates are still intact.