Study on the Constitutive Relations for the Quasi- overconsolidated Soils, Especially, Long-Term Consolidation

准超固结土特别是长期固结土本构关系研究

• 批准号: 61460164
• 负责人: AKAI Koichi
• 金额: $ 2.37万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61460164/
• 关键词: Secondary compression; Time-hardening; Cementation; 擬似過圧密; シキソトロピー; 力学試験; 応力ひずみ関係; 二次圧縮速度; Pc

First, a study on the physico-chemical characteristics of the natural soils (Osaka seabed aluvial and deluvial marine clays, and sediment of Lake Biwa) using SEM and some kinds of physical testing equipments was carried ot. Also used were the artificial cemented clays which have similar characteristics to the natural cemented clays. From the results, we were able to discuss the effect of geological cementation on the soil structure.Secondly, not only the isotropic consolidated-undrained compression tests but some kinds of consolidation tests were performed in the laboratory with the artificially cemented clays. From the results was discussed the long-term consolidation of the quasi-overconsolidated soils from the view points of the secondary compression and the cementation. Also investigated was the behavior of the cemented clays. Moreover, the movement of soil particles and formation ofshear bands during shear were observed, using the special direct shear test equipment in SEM.Finally, We discuss the possibility of establishing the constitutive relations of the quasi-overconsolidated clays taking the time-hardening factor into consideration.

首先，使用SEM和某些物理测试设备进行了关于天然土壤（大阪海床和Deluvial海洋粘土）以及Biwa湖沉积物的物理化学特征的研究。还使用的是人工胶结粘土，其特征与天然胶结粘土相似。从结果来看，我们能够讨论地质胶结化对土壤结构的影响。首先，不仅在各向同性的巩固液压测试中，而且在实验室中使用人工胶结的粘土进行了某些类型的固结测试。从结果中讨论了从次级压缩和胶结的视点从准超固结的土壤中的长期合并。还研究了粘土的行为。此外，使用SEM中的特殊直接剪切测试设备观察到土壤颗粒的运动和剪切带的形成。在本文中，我们讨论了建立准固化的粘土的构成关系的可能性，将时间固定因子考虑到时间上。

项目成果

Masashi Kamon et al.: Gihodo. Soil Mechanics I Soil Classifications and Physico-chemical Characters, 271 (1988)

Masashi Kamon 等人：Gihodo。

Yuzo OHNISHI et al.: "A Study on the Analysis of Ground with Double Porosity Model (in Japanese)" Proceedings of JSCE.

Yuzo OHNISHI 等人：“双孔隙模型地基分析研究（日文）”JSCE 论文集。

Koichi AKAI: "Properties of the Seabed Ground in Senshyu and Problems of Designs of the Offshore Structure" Symposium on the Sea-beg Ground (in Japanese). 181-186 (1987)

Koichi AKAI：“仙州海底地面的特性和近海结构的设计问题”海乞地面研讨会（日语）。

赤井浩一, 嘉門雅史 他: 京大防災研究所年報. 29B-2. 83-93 (1986)

Koichi Akai、Masashi Kamon 等：京都大学防灾研究所年度报告 29B-2 (1986)。

Koichi AKAI and Ikuo SANO et al.: "Performance of Land Reclamation for Sewage Treatment Plant Coastal Soft Clay with In-Situ Measurement" Proc.Int. Conf. Engng. Problems on Regional Soils.

Koichi AKAI 和 Ikuo SANO 等人：“污水处理厂沿海软粘土土地复垦性能与原位测量”Proc.Int。