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，利用扫描电镜和各种物理测试设备对天然土壤（大阪海底冲积土和洪积海相粘土以及琵琶湖沉积物）的物理化学特性进行了研究。还使用了与天然胶结粘土具有相似特性的人造胶结粘土。由此,我们可以讨论地质胶结对土体结构的影响。其次,在实验室中不仅进行了各向同性固结不排水压缩试验,而且还对人工胶结粘土进行了多种固结试验。根据结果​​从二次压缩和胶结的角度讨论了准超固结土的长期固结。还研究了胶结粘土的行为。此外，利用扫描电镜专用的直剪试验设备，观察了剪切过程中土颗粒的运动和剪切带的形成。最后，讨论了建立考虑时硬因子的准超固结粘土本构关系的可能性。考虑。

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）。

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。

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)。