| 旧沥青路面加铺温度及耦合应力分析 |
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| 引用本文： | 江毅,华建湘,颜可珍,黄立葵.旧沥青路面加铺温度及耦合应力分析[J].中南公路工程,2010(1):1-4,8. |
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| 作者姓名： | 江毅 华建湘 颜可珍 黄立葵 |
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| 作者单位： | 湖南省衡岳高速公路建设开发有限公司;湖南大学土木工程学院; |
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| 基金项目： | 国家自然科学基金资助(50808077); 中国博士后科学基金资助(20070411113) |
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| 摘 要： | 基于旧沥青路面加铺沥青面层的结构特点，利用有限元法对不同降温条件的加铺路面温度及耦合应力进行了分析，研究不同降温幅度、起始温度、加铺厚度时的变化规律，并着重计算了旧路裂缝对耦合应力的影响。计算结果表明：耦合使拉应力变小，但可能导致剪应力变大；降温速度与起始温度对加铺层耦合应力影响显著；增加加铺厚度在一定程度上可以缓解加铺层耦合应力；设计和施工中应该考虑旧路裂缝对加铺层的影响。
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| 关 键 词： | 沥青加铺层 有限元法 温度应力 耦合应力 |
Analysis of Thermal and Coupled-filed Stresses of Overlay on the Old Asphalt Pavements |
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| JIANG Yi,HUA Jianxiang,YAN Kezhen,HUANG Likui.Analysis of Thermal and Coupled-filed Stresses of Overlay on the Old Asphalt Pavements[J].Central South Highway Engineering,2010(1):1-4,8. |
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| Authors: | JIANG Yi HUA Jianxiang YAN Kezhen HUANG Likui |
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| Institution: | JIANG Yi1,HUA Jianxiang1,YAN Kezhen2,HUANG Likui2(1.Hunan Hengyue Free Construction , Development Corporation Ltd,Hengyang,Hunan,421900,China,2.College of Civil Engineering,Hunan University,Changsha,Hunan 410082,China) |
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| Abstract: | In order to simulate the thermal and coupled-field stress responses of overlay on old asphalt pavements,a model under different cooling conditions is built,and then the model were analyzed by using finite element software.In the analysis process,the influence of cooling range,initial temperature,thickness of overlay were represented.And then the influence of cracks which existence in old pavement were emphatically analyzed.The results indicate that,coupled-field can decrease tensile stress but may increase ... |
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| Keywords: | Asphalt overlay finite element method Thermal stress Coupled stress |
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