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

颗粒材料层尚未被认为在路面结构中具有很高的结构质量。该项目的目的是在人行道结构中开发新的分析和评估方法。为此，研究人员已分为五组，并在这些小组之间进行了研究。每个组的结果如下。括号中的名称为（是）研究员：组A组。建模颗粒基础课程（Nishizawa）：基于三维有限元分析的路面结构分析的程序包，开发了PAVE3D。由B组开发的扩展SMP修改后的CAM-CLAY模型已纳入PAVE3D。使用该模型，研究了混凝土路面上颗粒状子基数永久变形的影响。发现基础过程的永久变形显着增加了混凝土应力。集团B.建模G的机械行为……更多随机材料（koyanagawa和takeuchi）：从重复的负载实验中证实了混凝土板下基地过程的永久变形。 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.从结果中，研究了渐变对应力转移路径的影响。集团D.改进颗粒基础课程的构建（Hachiya）：使用用水泥稳定的再生沥青混凝土开发了新的基础课程材料。此外，还研究了水含量，压实程度和厚度对建筑的影响。结果表明，如果压实足够，则水含量的影响很小。集团E.颗粒基础课程的结构评估（Kamiura）：为了精确评估颗粒基础课程的机械性能，紧凑型FWD和PS层层检查方法的适用性。发现两种方法都可以用于评估，并且这两种方法之间的差异很小。较少的

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。

Shishen Wu, et al.: "Full Usage of Reclaimed Asphalt Concretes as Bases"Journal of Pavement Engineering, JSCE. Vol.6. 84-93 (2001)

吴世深，等：“再生沥青混凝土基层的充分利用”，日本建筑工程学报，路面工程学报。

T. Nishizawa: "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 Pavements.

T. Nishizawa：“颗粒基层塑性变形对混凝土路面板性能的影响”5^<Th>国际 CROW 混凝土路面设计和性能基础建模研讨会。