| 沥青路面热-荷载耦合应力数值分析 |
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| 引用本文： | 郭红兵,陈拴发. 沥青路面热-荷载耦合应力数值分析[J]. 长安大学学报(自然科学版), 2010, 0(2) |
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| 作者姓名： | 郭红兵 陈拴发 |
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| 作者单位： | 长安大学公路学院;陕西交通职业技术学院公路工程系;长安大学材料科学与工程学院; |
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| 基金项目： | 国家西部交通建设科技项目(200631800005) |
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| 摘 要： | 针对半刚性基层沥青路面和刚性基层沥青路面结构中普遍存在的反射裂缝问题,提出了采用开级配大粒径沥青碎石混合料(OLSM)作为裂缝缓解层的方法;利用三维有限元法,对设置普通沥青混凝土与开级配大粒径沥青碎石2种类型裂缝缓解层的贫混凝土基层沥青路面结构进行热-荷载耦合应力对比分析,并进行了试验路观测与理论计算分析。结果表明:OLSM的耦合应力明显小于普通沥青混凝土的应力;OLSM中大粒径矿料多、沥青含量少及空隙率大的结构特点有利于消解及吸收裂缝处路面应力,可有效防止或减缓贫混凝土基层沥青路面的反射裂缝,是一种可以缓解反射裂缝的有效材料。
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| 关 键 词： | 道路工程 开级配大粒径沥青碎石混合料 数值分析 热-荷载耦合应力 反射裂缝 路用性能 |
Numerical analysis of temperature-load coupling stress for asphalt pavement |
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| GUO Hong-bing,,CHEN Shuan-fa. Numerical analysis of temperature-load coupling stress for asphalt pavement[J]. JOurnal of Chang’an University:Natural Science Edition, 2010, 0(2) |
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| Authors: | GUO Hong-bing CHEN Shuan-fa |
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| Affiliation: | GUO Hong-bing1,2,CHEN Shuan-fa3(1.School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China,2.Department of Highway Engineering,Shaanxi College of Communications , Technology,Xi'an 710018,3.School of Material Science , Engineering,Xi'an 710061,China) |
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| Abstract: | Aimed at the problem of the reflective cracking in semi-rigid base asphalt pavement and rigid base asphalt pavement structures,a method of using Open-graded Large Stone Asphalt Mixes(OLSM) as the crack alleviating layer is proposed,the 3-D finite element method is used to analyze the temperature-load coupling stress for the crack alleviating layer of ordinary asphalt concrete and OLSM.The result indicates that the temperature-load coupling stress of the latter are less than that of the former.The investigat... |
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| Keywords: | road engineering open-graded large stone asphalt mixes numerical analysis temperature-load coupling stress reflective cracking road performance |
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