Permanent deformation characteristics and deterioration of permeability function of porous multi-layered ground

多孔多层地基永久变形特征及渗透函数恶化

• 批准号: 22560495
• 负责人: YOSHIDA Nobuyuki
• 金额: $ 2.33万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560495/
• 关键词: 積層地盤; アスファルト舗装; ポーラス; 塑性変形; 透水係数; 排水性; 三軸試験; 模型実験

With the focus on the accumulative plastic deformation (rut) and permeability of porous multi-layered ground, an attempt was made to grasp the rut progress and deterioration of permeability function due to traffic loadsfrom the levels of an element and a multi-layered structure. As the main findings, the relationships of the number of load applications with accumulative plastic deformation and permeability were obtained for a crusher-run and sandy subgrade soil from the repeated triaxial compression tests accompanied by falling-head permeability test. The equations of predicting the accumulative plastic deformation and permeability deteriorationwere also proposed. From the moving wheel load tests on porous multi-layered model ground, were elucidated the mechanisms of the progress of rut, the deterioration of load transfer capability and the deterioration of permeability function with the increase of the number of wheel loads.

以多孔多层地基的累积塑性变形（车辙）和渗透性为重点，尝试从单元和多层结构的层面掌握车辙的进展以及交通荷载引起的渗透功能的恶化。主要研究结果是，通过反复三轴压缩试验和落头渗透性试验，获得了破碎机运行和砂质路基土的荷载施加次数与累积塑性变形和渗透性的关系。还提出了累积塑性变形和渗透率恶化的预测方程。通过多孔多层模型地基的动轮荷载试验，阐明了随着轮荷数量的增加车辙进展、荷载传递能力恶化和渗透功能恶化的机理。

项目成果

アスファルト混合物の室内水浸劣化方法の標準化に関する基礎検討

沥青混合料室内水浸老化方法标准化基础研究

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HMS路盤材の疲労破壊基準式に及ぼす養生期間および載荷条件の影響について

养护周期和加载条件对HMS路基材料疲劳破坏准则公式的影响

• 发表时间: 2011
• 作者: 古谷卓也・田中大樹・吉田信之

繰返しねじりせん断に伴う累積変形に基づくアスファルト混合物の耐久性評価の試み

尝试根据反复扭转剪切引起的累积变形来评估沥青混合料的耐久性

• 发表时间: 2010
• 作者: 泓 敦大・小野さゆり・足立 健・吉田信之

Comparison of Mechanical Characteristics of Slag Base-course Materials Produced by Various Iron and Steel Manufacturers in Japan

日本各钢铁厂家生产的矿渣基层材料力学特性比较

• 发表时间: 2010
• 作者: N.Yoshida; H.Kimura; T.Miyahara
• 通讯作者: T.Miyahara

繰返しねじりせん断による密粒度アスファルト混合物の耐久性評価について

反复扭转剪切密实沥青混合料耐久性评价

• 发表时间: 2011
• 作者: 吉田信之;足立健;泓敦弘
• 通讯作者: 泓敦弘