Deformation behavior of offshore artificial island

近海人工岛变形行为

• 批准号: 10650494
• 负责人: SHIBATA Toru
• 金额: $ 1.34万
• 依托单位: FUKUTAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650494/
• 关键词: Reclaimed Land; Settlement analysis; Strain rate; Temperature; RI-Cone Penetrometer; Modeling of Ground; Compressibility; Aging; 地盤モデル化; 圧縮特性; 沈下予測; 液性限界; ベーン試験; フォールコーン試験

In this research work, (1) analytical case studies of ground settlement on the basis of rheological aspect, (2) measurement of profiles of subsoil using RI-Cone penetrometer and (3) experimental investigation on the relationship between the physical properties and mechanical properties of clays are performed.(1) The compressibility in one-dimensional consolidations of clays is mainly influenced by strain rate (ε) and temperature (T), and several experimental studies on these factors have recently been performed. On the basis of these results, Shibata quantified the combined effect of εand T as follows.If the stress-strain curves obtained by Constant Rate of Strain Oedometer tests at [TィイD21ィエD2 : εィイD21ィエD2] and at [TィイD22ィエD2 : εィイD22ィエD2] coincide, behavior is controlled by a relationship between ε and T as εィイD21ィエD2/εィイD22ィエD2≒(TィイD21ィエD2/TィイD22ィエD2)ィイD11/2ィエD1.(2) Radioisotope cone penetrometer (RI-Cone) has been successfully applied to actual site investigation at various locatio … More ns in the world. In this research work, two types of RI-Cones, Neutron-Moisture Cone penetrometer and Nuclear-Density Cone penetrometer were applied for two clayey deposits and two sandy deposits. For all site, the natural water content and wet density profiles measured with RI-Cones have been compared with the data obtained from laboratory tests carried out for undisturbed samples. On the basis of the fact that they show good agreement for both clay and sand deposits, RI-Cone are found to be versatile tools for subsoil investigation.(3) In this research, the correlation of liquid limit with some mechanical properties of reconstituted remolded clays are investigated. On the basis of the experimental results, compressibility of clays are uniquely related to the normalized void ratio as follows.(e-eィイD2minィエD2)/(wィイD2LィエD2-wィイD2L,minィエD2)=f(p)It was also shown that the normalized void ratio is the useful measure for quantitative evaluation of compressibility of natural sedimentary clay deposit. Less

在这项研究工作中，（1）地面沉降的流变学方面的分析案例研究，（2）使用RI-锥形流变仪的底土剖面测量和（3）粘土的物理性质和力学性质之间的关系的实验研究进行。(1)粘土一维固结压缩性主要受应变速率（ε）和温度（T）的影响，近年来已有一些试验研究对这些因素进行了探讨。在这些结果的基础上，柴田将ε和T的综合影响量化如下。如果通过恒定应变速率密度计测试在[T 'イD21''D2：ε'イD21 '' D2]和[T 'イD22''D2：ε D22 D2]重合，行为由ε和T之间的关系控制，如ε D21 D2/ε D22（T D21 D2/T D22 D2）D11/2 D1。(2)放射性同位素锥形比重计（RI-Cone）已成功地应用于不同地点的实际场地调查。 ...更多信息 在世界上。在这项研究工作中，两种类型的RI锥，中子-水分锥流量计和核密度锥流量计被应用于两个粘土矿床和两个桑迪矿床。对于所有的网站，天然含水量和湿密度剖面测量与RI锥已从实验室测试获得的数据进行了比较，未受干扰的样品。由于RI-Cone在粘土和砂沉积物方面表现出良好的一致性，因此被认为是地基调查的通用工具。(3)本研究探讨重塑黏土之液限与其力学性质之相关性。根据实验结果，粘土的压缩性与归一化孔隙比的唯一关系如下。(e-e归一化孔隙比D_2（min孔隙比D_2）/（w孔隙比D_2 L孔隙比D_2-w孔隙比D_2 L，min孔隙比D_2）=f（p）研究还表明，归一化孔隙比是定量评价天然沉积粘土存款压缩性的有效指标。少

项目成果

柴田徹: "粘土の液性限界の測定法に関する研究"福山大学工学部紀要. 22巻. 31-38 (1998)

柴田彻：“粘土液限测定方法的研究”福山大学工学部通报第 22 卷 31-38（1998 年）。

柴田徹: "練返し再構成粘土の圧密特性"第53回土木工学会年次学術講演会講演概要集. 396-397 (1998)

Toru Shibata：“再生粘土的固结特性”土木工程师学会第 53 届学术年会摘要 396-397（1998）。

T. Shibata: "A study on Measuring Method of the Liquid Limit of Clays"The memoirs of the fuculty of ENG. Fukuyama Univ.. Vol.22, No.1 (in Japanese). 31-38 (1998)

T. Shibata：“粘土液限测量方法的研究”ENG 系回忆录。

A. Nishihara: "Compressibility of Dilluvial Clay in Fukuyama"Proc. 51th Annual Conf. Chugoku Branch of JSCE. (in Jaoanese). 401-402 (1999)

A. Nishihara：“福山洪积粘土的可压缩性”Proc。

柴田徹: "粘土の液性限界について"第50回土木学会中国支部研究発表会概要集. 261-262 (1998)

柴田彻：《论粘土的液限》第50届日本土木工程学会中国分会研究报告摘要集261-262（1998）。