,Concrete block pavements in urban and local roads:Analysis of stress-strain condition and proposal

来源 :交通运输工程学报(英文版) | 被引量 : 0次 | 上传用户:gaiwenru
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Although the construction of block pavements has grown fast in the last decades,there isstill a need for simple tools that could be applied to design them.This paper analyzed andverified concrete block pavements for urban and local roads composed of rectangularconcrete pavers with plane side surfaces (no interlocking effect).The examined blockswere laid on a bedding sand layer,a cement treated base layer and a granular unboundfoundation layer.The commercial finite element (FE) software ANSYScalculate the response of the pavement when subjected to different loading,construction configurations.Three wheel positions,five blocks pattes,three bedding sand thicknesses and joints gaps have been considered to evaluate stress-strain condition on pavement materials.Fatigue and rutting verification was performed respectively for bound and unbound pavement materials using analytical curves available in the literature.At the end of this study,a proposal for a catalogue is presented.It has nine pavement sets,because it takes into account three values of subgrade capacity (30,90,and 150 MPa of resilient modulus) and three levels of traffic (400,000,1,500,000,and 4,000,000 passages of commercial vehicles during the service life).The obtained results provide an inexpensive procedure for the preliminary design of concrete block pavements.
其他文献
For the typical color defects of polysilicon wafers,i.e.,edge discoloration,color inaccuracy and color non-uniformity,a new integrated machine vision detection method is proposed based on an HSV color
现代设计在中国只有不到二十年的发展时间。受诸多因素影响,中国的平面设计教学从内容形式到教学方法都过于单调,传统工艺美术型的设计教育已无法适应社会的发展和市场的需求
【中图分类号】G434;H319 【文献标识码】B 【文章编号】2095-3089(2017)36-0017-01  在移动互联网络时代下,如何改革大学英语教学,提升课堂内外大学英语的学习效率,本文做了深入的探讨和研究。  互联网+与外语教学研究结合,通过学习方式的改变,发挥信息时代夸时空,大信息量,交互性和个性化学习的优势,实现自主学习,合作学习,探究学习,发展学生的信息素养,培养学生自主,高效
期刊
The present study deals with the quantification of skid resistance seasonal variation in asphalt pavements.Consequently,skid resistance data were collected twic
The inclusion of recycled asphalt shingles (RAS) in asphalt mixtures has become increasingiy common;however,the underlying design principles vary significantly
在世界经济发展进程中,经济全球化与经济地方化相伴而行,国家部分经济决策权在上移交与国际组织裁定的同时,部分下移至地方政府手中。城市的自主决策权有了很大的提高,政治、
去年,经我编发的两篇消息刊登以后,读者随即来信揭发说,这两篇消息是照着某报纸上的消息套下来的。我们找来某报一看,果然发现它们神形俱似,如出一辙。这当然不是偶然的巧合
我是做了几年的编辑、记者工作之后,于一九六四年开始作要闻版组版编辑的,直到一九八五年离开这个岗位,共做了二十多年的组版工作。实践中我体会到,组版工作绝不是单纯把编
Presently,there is a necessity of increasing the reclaimed asphalt pavement (RAP) content in recycling of asphalt pavements to save material cost,preserve energ
【摘要】初中数学教学时教育阶段的一个转折阶段,不仅要承接小学六年的数学知识,还要让学生逐渐适应教学内容和教学模式。初中的数学和小学的数学不同,难度上进一步提高,为让学生更好地适应这种教学难度,应该让学生在上课的时候更加更加认真,在课后不断的进行知识的总结和巩固,养成良好的学校习惯。文章讲述了初中数学教学中课程的总结习惯和能力培养习惯。  【关键词】初中数学教学;课后总结;能力培养  【基金项目】项