Development of Element tests for elucidating mechanical behavior of granular materials subjected to cyclic moving loads
开发元素测试来阐明颗粒材料在循环移动载荷作用下的机械行为
基本信息
- 批准号:15560420
- 负责人:
- 金额:$ 2.24万
- 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:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This study examines the mechanical behavior of granular materials subjected to cyclic moving loads, for example gravel roadbed and railroad ballast, and both a new testing method and new analytical procedures to examine the effects of the rotation of principal stress axes on cyclic plastic deformation of granular materials are proposed. The following conclusions can be obtained ;1.Cyclic plastic deformation obtained through moving loading tests is much larger than those obtained through fixed-place cyclic loading tests when other experimental conditions are the same. Accordingly, the difference in loading methods has a significant influence on the cyclic plastic deformation of granular materials.2.Residual strain obtained through cyclic loading triaxial tests with constant amplitude of deviator stress while controlling confining pressure constant is very small compared with the macro residual strain calculated from force-displacement relationships in moving loading tests, while that of … More cyclic torsional simple shear tests using a newly developed "Multi-ring shear apparatus" is almost equivalent to moving loading tests. Therefore, the multi-ring shear test is appropriate for an element test to simulate the actual stress states inside substructures under traffic loads. Moreover, it was revealed that the rotation of principal stress axes has a significant effect on cyclic deformation characteristics of granular materials.3.Two analytical procedures for simulating the mechanical behavior of granular materials subjected to cyclic moving loads were proposed. One is linear elastic FE analysis considering the material properties of cumulative strain derived from element test results of granular materials, which can roughly estimate the residual settlement of granular substructures due to cyclic loading. The other is discontinuous analysis which elements imitate the shape of real gram particles well because it was revealed that the element shape is one of the dominant factors to determine the mechanical behavior of granular assemblage in discontinuous analysis. Less
本研究考察了颗粒材料在循环移动荷载作用下的力学行为,例如砾石路基和铁路道砟,并提出了一种新的测试方法和新的分析方法来研究主应力轴旋转对颗粒材料循环塑性变形的影响。可以得到以下结论:1。在其他试验条件相同的情况下,通过移动加载试验获得的循环塑性变形量远大于通过固定位置循环加载试验获得的循环塑性变形量。因此,加载方式的不同对颗粒材料的循环塑性变形有显著的影响。在控制围压不变的情况下,采用偏应力恒定幅值的循环加载三轴试验得到的残余应变,与移动加载试验中根据力-位移关系计算的宏观残余应变相比,是非常小的,而采用新研制的“多环剪切仪”进行的多环扭转单剪试验得到的残余应变几乎与移动加载试验相当。因此,多环剪切试验适合作为模拟交通荷载作用下子结构内部实际应力状态的单元试验。此外,主应力轴的旋转对颗粒材料的循环变形特性有显著影响。提出了模拟颗粒材料在循环移动荷载作用下力学行为的两种解析方法。一种是考虑颗粒材料单元试验结果累积应变材料特性的线弹性有限元分析,可以粗略估计循环荷载作用下颗粒子结构的残余沉降。另一种是不连续分析,该分析较好地模拟了真实颗粒的形状,揭示了在不连续分析中,元素形状是决定颗粒组合力学行为的主要因素之一。少
项目成果
期刊论文数量(23)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
多重式リングせん断試験機による砕石の繰返し変形挙動に及ぼす主応力回転の影響の検討
利用多环剪切试验机研究主应力旋转对碎石重复变形行为的影响
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:杉山圭大;石川達也;三浦清一;関根悦夫
- 通讯作者:関根悦夫
石川 達也, 関根 悦夫, 河野 昭子, 三浦 清一: "An Estimation Method of Residual Settlement in Ballasted Track under Repeated Moving Loads"Proceedings of CBS04. (未定). (2004)
Tatsuya Ishikawa、Etsuo Sekine、Akiko Kono、Seiichi Miura:“重复移动荷载下有碴轨道残余沉降的估算方法”CBS04 论文集(待定)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
An Estimation Method of Residual Settlement in Ballasted Track under Repeated Moving Loads
重复移动荷载作用下有碴轨道残余沉降的估算方法
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Gorgulu;U.;Chouw;N.;石川達也
- 通讯作者:石川達也
各種離散化解析手法による模型バラスト軌道の繰返し塑性変形挙動解析
使用各种离散化分析方法分析模型道碴轨迹的重复塑性变形行为
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:HIROYUKI KUWAMOTO;石川達也
- 通讯作者:石川達也
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ISHIKAWA Tatsuya其他文献
ESTIMATION OF OCCURANCE OF SLOPE DISASTER RISKS ASSOCIATED WITH CLIMATE CHANGE CONSIDERING RAINFALL AND SNOWMELT PROCESSES
考虑降雨和融雪过程的与气候变化相关的斜坡灾害风险的发生估计
- DOI:
10.2208/jscejhe.78.2_i_91 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
KATAYOSE Riku;NAKATSUGAWA Makoto;ISHIKAWA Tatsuya - 通讯作者:
ISHIKAWA Tatsuya
FDTD法およびアンサンブルカルマンフィルタを用いたコンクリート内部の比誘電率分布推定
使用 FDTD 方法和集成卡尔曼滤波器估计混凝土内部相对介电常数分布
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
KATAYOSE Riku;NAKATSUGAWA Makoto;ISHIKAWA Tatsuya;Hideki Nagatsuka and N. Balakrishnan;山本佳士,久保洸太,藤森竣平,園田潤 - 通讯作者:
山本佳士,久保洸太,藤森竣平,園田潤
EXPERIMENTAL PREDICTION OF PERMEABILITY OF FREEZE-THAWED FINE-GRAINED SOIL
冻融细粒土渗透性的实验预测
- DOI:
10.2208/journalofjsce.6.1_156 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
HIROSE Go;ITO Yuzuru;ISHIKAWA Tatsuya;AKAGAWA Satoshi - 通讯作者:
AKAGAWA Satoshi
Fabrication of the Flexible Dual-Gate OFET Based Organic Pressure Sensor
基于柔性双栅极 OFET 的有机压力传感器的制造
- DOI:
10.1587/transele.2018oms0013 - 发表时间:
2019 - 期刊:
- 影响因子:0.5
- 作者:
ISHIKAWA Tatsuya;SAKAI Heisuke;MURATA Hideyuki - 通讯作者:
MURATA Hideyuki
Efficient Likelihood-Based Inference for the Generalized Pareto Distribution
广义帕累托分布的基于似然的有效推理
- DOI:
10.1007/s10463-020-00782-z - 发表时间:
2021 - 期刊:
- 影响因子:1
- 作者:
KATAYOSE Riku;NAKATSUGAWA Makoto;ISHIKAWA Tatsuya;Hideki Nagatsuka and N. Balakrishnan - 通讯作者:
Hideki Nagatsuka and N. Balakrishnan
ISHIKAWA Tatsuya的其他文献
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{{ truncateString('ISHIKAWA Tatsuya', 18)}}的其他基金
Wide-area risk assessment of cold-regions geodisasters under climate change by multi-physical and multi-scale analysis
气候变化背景下寒区地质灾害广域多物理多尺度风险评估
- 批准号:
16H02360 - 财政年份:2016
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Modeling of surface flow and infiltration branching characteristics due to snow melting and rainfall considering snow cover and vegetation change
考虑积雪和植被变化,对融雪和降雨引起的地表流和渗透分支特征进行建模
- 批准号:
15K14026 - 财政年份:2015
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Development of analytical procedure using phenomenalistic mathematical model for phase change-dependent geotechnical hazards in snowy cold regions
使用现象数学模型开发雪寒地区相变相关岩土灾害的分析程序
- 批准号:
24651204 - 财政年份:2012
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
A study on systematization of new geotechnical hazards in snowy cold regions caused by climate change and its hazard assessment
气候变化引起的雪寒地区新岩土灾害系统化研究及危害评价
- 批准号:
23360201 - 财政年份:2011
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Sophistication of evaluation method for the long-term performance of granular base course subjected to freeze-thaw history in cold regions
寒冷地区冻融历史颗粒基层长期性能评价方法的复杂度
- 批准号:
20360206 - 财政年份:2008
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on Elucidation and Prediction of Mechanical Behavior of Saturated/Unsaturated Granular Base Subjected to Cyclic Moving Loads.
循环移动载荷作用下饱和/不饱和颗粒基底力学行为的阐明和预测研究。
- 批准号:
18560479 - 财政年份:2006
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study on the genetic mechanism underlying "hypocalcemic myopathy" using an animal model
利用动物模型研究“低钙血症肌病”的遗传机制
- 批准号:
10670746 - 财政年份:1998
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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