Basic Research on Temperature- and Time-Depending Constitutive Equations for Cohesive Soils
粘性土随温度和时间变化的本构方程的基础研究
基本信息
- 批准号:10650485
- 负责人:
- 金额:$ 1.66万
- 依托单位:
- 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 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Temperature- and time-depending behavior of cohesive soils in one-dimensional compression conditions was studied vertical-pressure-constant consolidation tests under varying temperature and constant-rate-of-strain (CRS) consolidation tests.The effects of thermal expansion of soil particles were considered in results from tests conducted with varying temperature from 20 to 80℃. The thermal expansion was determined from density-temperature relationships. The validity of the method was evaluated by determining thermal expansion coefficients of a metal from two kinds of tests : to measure the change in length and to use the density-temperature relationships.Raising temperature causes the decrease in void ratio and secondary compression also causes it. A theoretical relationship between the change in temperature and the secondary compression duration both of which will cause an identical decrease in void ratio was derived. The relationship for a cohesive soil was presented with the consider … More ation of the thermal expansion. The account of thermal expansion resulted in a higher degree of thermally promoted consolidation.Constitutive properties of a soil can not be determined from the CRS consolidation test because of assumptions included in the basic theory and the method for determining constitutive relationships. Therefore, in order to examine the effects of compression rate upon the constitutive properties, we have to estimate true properties in certain ways. The following procedures were employed : at first, to make a temporal constitutive model based on the CRS consolidation test and to numerically simulate the behavior in the CRS consolidation with the model ; second, to compare the behavior of numerical simulation with that of the real consolidation test and to modify the model if the difference is observed beyond a certain limit. The numerical simulation was done by the finite-deformation finite-element method. This process could assess the effects of compression rate on the parameters in the constitutive model. Less
研究了一维压缩条件下黏性土的温度随时间变化特性——变温恒压固结试验和恒应变速率固结试验。在20 ~ 80℃温度范围内的试验结果中考虑了土粒热膨胀的影响。热膨胀由密度-温度关系确定。通过测量长度变化和使用密度-温度关系两种测试来确定金属的热膨胀系数,评估了该方法的有效性。温度升高导致孔隙率下降,二次压缩也导致孔隙率下降。导出了温度变化与二次压缩时间之间的理论关系,两者都会导致孔隙率的下降。在考虑了热膨胀的情况下,给出了粘性土的关系。热膨胀导致了更高程度的热促进固结。由于基础理论和确定本构关系的方法中所包含的假设,不能通过CRS固结试验确定土的本构特性。因此,为了检验压缩率对本构性能的影响,我们必须以一定的方式估计真实的性能。采用以下步骤:首先,基于CRS固结试验建立时间本构模型,并利用该模型对CRS固结过程中的行为进行数值模拟;第二,将数值模拟结果与实际固结试验结果进行对比,如果差异超过一定限度,则对模型进行修正。采用有限变形有限元法进行了数值模拟。该过程可以评估压缩率对本构模型参数的影响。少
项目成果
期刊论文数量(31)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Shimizu, M.and Tanaka, J.: "Quantitative evaluation of temperature and time effects in the one-dimensional consolidation behavior of clays (in Japanese)"Proceedings of the 36th Conference on Geotechnical Engineering, Japanese Geotechnical Society. (in pre
Shimizu, M. 和 Tanaka, J.:“粘土一维固结行为中温度和时间效应的定量评估(日语)”日本岩土工程学会第 36 届岩土工程会议论文集。
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清水正喜,田中淳: "粘土粒子の熱膨張率の測定とその精度評価"土木学会中国支部第51回研究発表会講演概要集. 421-422 (1999)
清水正树、田中淳:《粘土颗粒热膨胀系数的测量及其精度评价》日本土木工程学会中国分会第51次研究会议摘要421-422(1999)。
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清水正喜,今村乗仁: "定ひずみ速度圧密試験の圧縮速度依存性に関する研究"土木学会中国支部第51回研究発表会講演概要集. 415-416 (1999)
Masaki Shimizu、Norihito Imamura:“恒应变率固结试验的压缩率依赖性研究”日本土木工程学会中国分会第51届研究会议摘要415-416(1999)。
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Shimizu, M.and Imamura, J.: "A method of estimating the constitutive properties based on constant-rate-of-strain consolidation test and the evaluation of rate effects (in Japanese)"Proceedings of the 36th Conference on Geotechnical Engineering, Japanese G
Shimizu, M. 和 Imamura, J.:“基于恒定应变率固结试验和速率效应评估的本构特性估计方法(日语)”第 36 届岩土工程会议论文集,日本
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Masayoshi SHIMIZU and Joji IMAMURA: "Method of examining data measured in the constant-rate-of-strain consolidation test"Proceedings of the 11th International Offshore and Polar Engineering Conference. Vol.1(印刷中). (2001)
Masayoshi SHIMIZU 和 Joji IMAMURA:“恒速固结试验中测量数据的检查方法”第 11 届国际近海和极地工程会议论文集第 1 卷(2001 年)。
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SHIMIZU Masayoshi其他文献
Post-War Japan as seen by the Philippines : Reconciliation and Oblivion.
菲律宾眼中的战后日本:和解与遗忘。
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:0
- 作者:
K.;Saeki;et. al.;SHIMIZU Masayoshi;NAKANO Satoshi - 通讯作者:
NAKANO Satoshi
On the Demand for 'Resti- tution Reparation' by Haiti.
关于海地的“归还赔偿”要求。
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:0
- 作者:
K.;Saeki;et. al.;SHIMIZU Masayoshi;NAKANO Satoshi;HAMA Tadao - 通讯作者:
HAMA Tadao
France in the Inter-War Age and the Colonies.
两次世界大战期间的法国和殖民地。
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:0
- 作者:
K.;Saeki;et. al.;SHIMIZU Masayoshi;NAKANO Satoshi;HAMA Tadao;HIRANO Chikako - 通讯作者:
HIRANO Chikako
On the Social Role of the Historical Science.
论历史科学的社会作用。
- DOI:
- 发表时间:
2006 - 期刊:
- 影响因子:0
- 作者:
E.;Kuwano;徳永 洋介;SHIMIZU Masayoshi - 通讯作者:
SHIMIZU Masayoshi
A Trend in the Research of the History of the Nuremberg Tribunal.
纽伦堡法庭史研究的一个趋势。
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:0
- 作者:
K.;Saeki;et. al.;SHIMIZU Masayoshi - 通讯作者:
SHIMIZU Masayoshi
SHIMIZU Masayoshi的其他文献
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{{ truncateString('SHIMIZU Masayoshi', 18)}}的其他基金
A Study on the Legal Punishment on Nazi War Criminals in Occupied Germany
德国沦陷区纳粹战犯法律惩治研究
- 批准号:
14510418 - 财政年份:2002
- 资助金额:
$ 1.66万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study on the assessment of shear strength characteristics of non-sedimentary natural soils with the consideration of inhomogeneity and void ratio
考虑不均匀性和孔隙比的非沉积天然土抗剪强度特性评价研究
- 批准号:
13650543 - 财政年份:2001
- 资助金额:
$ 1.66万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Research on the applicability of finite-deformation-consolidation theory to constant-rate-of-strain consolidation tests.
有限变形固结理论在恒应变率固结试验中的适用性研究。
- 批准号:
08650578 - 财政年份:1996
- 资助金额:
$ 1.66万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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