Strength and deformation properties of porous granular material and proposing of ground investigation method with focusing on elast-plastic deformation and crushing of its particle

多孔颗粒材料的强度和变形特性及以颗粒弹塑性变形和破碎为重点的地面调查方法的提出

• 批准号: 23760448
• 负责人: KIKKAWA Naotaka
• 金额: $ 2.25万
• 依托单位: National Institute of Occupational Safety and Health, Japan
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760448/
• 关键词: 軽石; コーン貫入試験; 個別要素法; 画像解析

In order to evaluate the macro-properties from the micro-properties of pumice sand, a series of experimental tests and simulations were performed. As a result, the crushing strength of pumice sand particle was much smaller than that of the other sand particle (e.g. silica sand such as Toyoura sand). The tip resistance of pumice sand during cone penetrating was also much smaller than that of Toyoura sand, it was because of much small particle crushing strength. The normalized tip resistance and ratio of sleeve friction of pumice sand and Toyoura sand were plotted on the Robertson's soil classification figure and both are distinguished easily and it is supposed to judge if the pumice sand layer were existing on a site with the Robertson's soil classification figure.

为了从浮石砂的微观特性来评价其宏观特性，进行了一系列的试验和模拟。结果，浮石砂颗粒的压碎强度远小于其它砂颗粒（例如，诸如丰浦砂的硅砂）的压碎强度。浮石砂在锥贯入过程中的尖端阻力也比丰浦砂小得多，这是因为浮石砂的颗粒破碎强度小得多。将浮岩砂和丰浦砂的归一化端阻力和套筒摩擦比绘制在Robertson土壤分类图上，两者易于区分，可以用Robertson土壤分类图判断场地上是否存在浮岩砂层。

项目成果

Micro-properties of pumice particles using computed tomography

使用计算机断层扫描技术观察浮石颗粒的微观特性

• 发表时间: 2013
• 作者: Kikkawa;N.;Pender;M.J. and Orense;R.P
• 通讯作者: R.P

Comparison of the geotechnical properties of pumice sand from Japan and New Zealand

日本和新西兰浮石砂岩土性能比较

• 发表时间: 2013
• 作者: Kikkawa;N.;Pender;M.J. and Orense;R.P
• 通讯作者: R.P

Observations on microstructure of pumice particles using computed tomography

• DOI: 10.1139/cgj-2012-0365
• 发表时间: 2013-11-01
• 期刊: CANADIAN GEOTECHNICAL JOURNAL
• 影响因子: 3.6
• 作者: Kikkawa, Naotaka;Orense, Rolando P.;Pender, Michael J.
• 通讯作者: Pender, Michael J.

粒子の弾塑性変形と破砕に着目した多孔質粒状体の強度変形特性と地盤調査法の提案

多孔颗粒强度变形特征及以颗粒弹塑性变形和断裂为重点的地面调查方法的提出

• 发表时间: 2012
• 期刊: 平成24年版建設業安全衛生年鑑
• 作者: 吉川直孝;Pender;M.J. and Orense;R.P
• 通讯作者: R.P

軽石の力学特性

浮石的机械性能

• 发表时间: 2012
• 作者: 吉川直孝;伊藤和也;堀智仁;三田地利之,Pender;M.J. and Orense;R.P
• 通讯作者: R.P