权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

STUDY ON THE STRUCTURAL DESIGN OF PRECAST CONCRETE PAVEMENT

预制混凝土路面结构设计研究

基本信息

批准号：
08650540
负责人：
NISHIZAWA Tatuo
金额：
$ 1.09万
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 (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650540/
关键词：
PRECAST CONCRETE PAVEMENT MECHANICAL BEHAVIOR FATIGUE ANALYSIS LOAD TRANSFER ACROSS JOINT THERMAL STRESS OVERLAY PLATE FEM プレキャストコンクリート舗装ダウエルバ-

项目摘要

In our previous studies, a plate finite element method (FEM) for estimating stresses and deflections in precast concrete pavement slab has been developed based on the linear elastic plate on Winkler foundation model. Using this method, the following researches were conducted :1 Applicability of precast concrete pavement (PRCP) with doweled joints to tunnel roads was investigated. The effects of subbase and dowel bars at transverse joints on the mechanistic behaviors of PRCP were examined. The thermal stresses in PRCP were also discussed. Fatigue and faulting analyzes were conducted to compare the fatigue damage and amount of faulting of PRCP with those of normal concrete pavement (NCP). From the results of the analyzes, it was found that increasing flexural strength of concrete and modulus of subbase reaction is required to ensure long term perfoumance of PRCP.2 Applicability of thin concrete overlay to the rehabilitation of old asphalt pavement was investigated with small model experiments and FEM analysis. As the results, the characterisics of slab temperature and underlying existing asphalt pavement, the effects of the pavement temperature on the interface shear stress and bending stress and fatigue damage are revealed.3 This model was extended in order to handle the overlayd pavements

在我们的前期研究中，基于Winkler地基上的线弹性板模型，发展了一种计算预制混凝土路面板应力和挠度的板有限元法。采用该方法进行了以下研究工作：1研究了带销缝预制混凝土路面在隧道路面中的适用性。研究了底基层和横缝传力杆对PRCP受力性能的影响。并对PRCP的热应力进行了讨论。通过疲劳分析和断裂分析，比较了普通混凝土路面和普通混凝土路面的疲劳损伤和断裂量。分析结果表明，为了确保PRCP的长期性能，需要提高混凝土的抗弯强度和底基层反应模量。2通过小型模型实验和有限元分析，研究了薄混凝土加铺层对旧沥青路面修复的适用性。结果表明，在不同温度下，沥青混凝土路面板的温度变化规律与下卧层沥青混凝土路面板的温度变化规律基本一致，路面板的温度变化对沥青混凝土路面板的剪应力、弯应力和疲劳损伤的影响规律基本一致