[1]袁玉卿刘凤利王选仓.旧水泥路面沥青加辅层间防裂抗拉强度指标研究[J].郑州大学学报(工学版),2015,36(02):28-32.[doi:10.3969/ j.issn.1671 -6833.2015.02.007]
　YUAN Yu-qing,LIU Feng-li,WANG Xuan-cang.Research on Tensile Strength Index of Anti-cracking Interlayerbetween Old Cement Pavement and Asphalt Overlay[J].Journal of Zhengzhou University (Engineering Science),2015,36(02):28-32.[doi:10.3969/ j.issn.1671 -6833.2015.02.007]
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旧水泥路面沥青加辅层间防裂抗拉强度指标研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36卷
期数:
2015年02期
页码:
28-32
栏目:
出版日期:
2015-04-30

文章信息/Info

Title:
Research on Tensile Strength Index of Anti-cracking Interlayerbetween Old Cement Pavement and Asphalt Overlay
作者:
袁玉卿1刘凤利2王选仓3
1 .河南大学土木建筑学院,河南开封475004;2.长安大学公路学院,陕西西安710064
Author(s):
YUAN Yu-qing1; LIU Feng-li1; WANG Xuan-cang1
1.School of Civil Engineering and Architecture,Henan University,Kaifeng 475004,China; 2.School of Highway,Chang’anUniversity,Xi’an 710064,China
关键词:
道路工程; 层间抗裂; 加铺层; 旧水泥路面; 抗拉强度; APP油毡
Keywords:
road engineering;  anti-cracking interlayer;  overlay;  old cement pavement; tensile strength; APPmodified bituminous linoleum
分类号:
U416.2
DOI:
10.3969/ j.issn.1671 -6833.2015.02.007
文献标志码:
A
摘要:
为了研究旧水泥路面沥青加铺层间防裂抗拉强度指标,基于APP油毡层间防裂建立模型,进行了力学分析、理论推导,数值模拟,推导出了层间抗拉强度的实用计算式,推荐了强度指标值.结果表明:在小变形的前提下,挠度值与缝宽度、延伸率成正比;防裂夹层所受到的拉力,与缝宽度、路面压力成正比,与延伸率成反比;防裂夹层的拉伸模量在Ⅰ 000 MPa时经济技术效果最好,最大主应力、等效应力及最大剪应力分别为0.59 MPa ,1.02 MPa,0.51 MPa.考虑油毡的通用试验方法及抗拉强度的表示方法,油毡的抗拉强度应不小于300 N/50 mm.
Abstract:
To explore tensile strength index of anti-cracking interlayer between old cement pavement and as-phalt overlay,based on the special model of APP modified bituminous linoleum reinforced the structure,me-chanical analysis,theoretical derivation and numerical simulation were put forward. Then,practical calcula-tion formula of tensile strength of anti-cracking layer was also deduced. Finally,strength index was recommen-ded. In the premise of small deformation,deflection value is proportional to crack width and elongation.Pul-ling force of anti-cracking sandwich is proportional to crack width and pavement pressure, and inverse to elon-gation. The anti-cracking interlayer with 1000 MPa modulus can obtain the best economic technology effect,when the maximum principal stress,equivalent stress and maximum shear stress are 0.59,1.02 and 0. 51MPa,respectively. In consideration of the general test methods and expression,the tensile strength of APP li-noleum should be not less than 300 N/50 mm.

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