MECHANICAL ANALYSIS AND EVALUATION OF GRANULAR MATERIALS IN PAVEMENT STRUCTURES

路面结构中颗粒材料的力学分析和评估

• 批准号: 12555130
• 负责人: NISHIZAWA Tatsuo
• 金额: $ 4.1万
• 依托单位: ISHIKAWA NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555130/
• 关键词: PAVEMENT; GRANULAR MATERIAL; BASE COUSE; CONSTITUTIVE LOW; THREE DIMENSIONAL FINITE ELEMENT METHOD; STRUCTURAL DESIGN; PHOTO ELASTIC TEST

Granular material layers have not been considered to have high structural quality in pavement structures. The object of this project is to develop new analysis and evaluation methods of granular materials in pavement structure. For this purpose, the investigators have been divided into five groups and conducted their studies in collaboration among these groups. Outcomes of each group are as follows. Name(s) in parenthesis is(are) investigator(s) :Group A. Modeling granular base course (Nishizawa) : A program package for structural analysis of pavement based on three dimensional finite element analysis, Pave3D was developed. Extended SMP Criterion Modified Cam-clay model, which was developed by Group B, was incorporated into the Pave3D. Using the model, effects of permanent deformation of granular subbase in a concrete pavement was investigated. It was found that the permanent deformation of base course significantly increases concrete stresses.Group B. Modeling mechanical behavior of g … More ranular material (Koyanagawa, and Takeuchi) : Existence of permanent deformation of base course under concrete slab was confirmed from a repetitive loading experiment. Then to apply the Extended SMP Criterion Modified Cam-clay model to granular materials, triaxial compression test was conducted on a granular base course material and parameters required for the model were identified.Group C. Micro-mechanics of granular material (Murai) : Visualization of stress transfer path in granular material under compressive and shear tests was tried using the two dimensional photo-elastic test. From the results, effect of gradation on stress transfer path was investigated.Group D. Improvement of construction of granular base course (Hachiya) : New base course material was developed using reclaimed asphalt concrete stabilized with cement. Also, effects of water content, compaction degree and thickness on construction were investigated. The results revealed that the effect of water content is very small if compaction is sufficient.Group E. Structural evaluation of granular base course (Kamiura) : In order to precisely evaluate mechanical property of granular base course, applicability of compact FWD and PS layer inspection method were examined. It was found that both methods can be used for the evaluation and the difference between those two methods is very small. Less

颗粒层在裂解中具有高结构，为此目的，他们的研究中的研究是在这些群体中的合作。尺寸有限的元素，pave3d是使用pave3d的延长的cam-clay模型。 。鉴定了模型。GROUPC.颗粒材料的微力学（Murai）：在颗粒材料压缩和剪切测试中的应力转移路径的可视化是从Dimenstic测试中进行的。研究了。GroupD。非常小的ISF组合。集团E.结构评估基础课程（Kamiura）：为了精确评估LAR基础的机械性，紧凑型FWD和PS层检查方法的适用性。小

项目成果

T.Nishizawa, et al.: "Effects of Plastic Deformation of Granular Base on Performance of Concrete Pavement Slab"5^<th> International CROW-Workshop on Fundamental Modeling of Design and Performance of Concrete. (In printing).

T.Nishizawa 等人：“粒状基层塑性变形对混凝土路面板性能的影响”第 5 届国际 CROW 混凝土设计和性能基础建模研讨会。

Y. Takeuchi: "Permanent Deformation of Base Course under Concrete Pavement and Its Effect to Fatigue Failure"Proc. of 7th International Conference on Concrete Pavements. 195-208

Y. Takeuchi：“混凝土路面下基层的永久变形及其对疲劳破坏的影响”Proc。

Y.Takeuchi et al.: "Permanent Deformation of Base Course under Concrete Pavement and Its Effect to Fatigue Failure"Proc. of 7th International Conference on Concrete Pavements. 195-208 (2001)

Y.Takeuchi 等：“混凝土路面下基层的永久变形及其对疲劳破坏的影响”Proc。

竹内 康 他: "コンクリート舗装における路盤K値と弾性係数の換算式に関する実験的研究"土木学会論文集. 669. 17-25 (2001)

Yasushi Takeuchi等：“混凝土路面底基层K值与弹性模量换算公式的实验研究”日本土木工程学会学报669. 17-25 (2001)。

Y. Takeuchi, et al.: "Experimental Study of K-value and Elastic Modulus of Base Course in Concrete Pavement"Journal of Materials, Concrete Structures and Pavements, JSCE. No.669. 17-25 (2001)

Y. Takeuchi等人：“混凝土路面基层K值和弹性模量的实验研究”材料、混凝土结构和路面杂志，JSCE。