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| 基于三维有限元的超薄白色罩面结构设计方法 | |
| 引用本文： | 崔鹏,张莉,李宇峙,孙立军. 基于三维有限元的超薄白色罩面结构设计方法[J]. 同济大学学报(自然科学版), 2006, 34(12): 1637-1642 |
| 作者姓名： | 崔鹏 张莉 李宇峙 孙立军 |
| 作者单位： | 1. 同济大学,道路与交通工程教育部重点实验室,上海,200092 2. 同济大学,经济与管理学院,上海,200092 3. 长沙理工大学,道路工程交通部重点实验室,湖南,长沙,410076 |
| 摘 要： | 通过有限元分析及试验，探讨了超薄白色罩面（UTW）的结构设计方法．采用ANSYS软件建立有限元模型，以正交各向异性接触模型模拟层间接触状况．分析确定了最不利荷位，对板底拉应力和层间剪应力的影响因素进行了分析，计算了不同板尺寸下的温度应力．基于基层顶面当量回弹模量和旧沥青层模量，给出结构强度综合系数的计算公式，得出结构强度综合系数小于等于17时的板厚设计图表，可用于超薄白色罩面的路面设计。 |
| 关 键 词： | 道路工程 超薄白色罩面 有限元 结构强度综合系数 接触模型 |
| 文章编号： | 0253-374X（2006）12-1637-06 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-04-11 |
Ultra-Thin Whitetopping Pavement Structural Design Method Based on 3D Finite Element |
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| CUI Peng,ZHANG Li,LI Yuzhi,SUN Lijun. Ultra-Thin Whitetopping Pavement Structural Design Method Based on 3D Finite Element[J]. Journal of Tongji University(Natural Science), 2006, 34(12): 1637-1642 | |
| Authors: | CUI Peng ZHANG Li LI Yuzhi SUN Lijun |
| Affiliation: | 1. Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University,Shanghai 200092,China; 2. School of Economics and Management, Tongji University, Shanghai 200092,China; 3. Key Laboratory of Road and Traffic Engineering of the Ministry of Communications, Changsha University of Science and Technology, Changsha 410076,China |
| Abstract: | Ultra-thin whitetopping(UTW) pavement structural design method is discussed in this paper on the basis of Finite Element analysis and test.ANASYS was adopted in building FE models and an orthotropic contact model was adopted to simulate the interface contact condition.The critical(loading) position is determined,and the factors influencing the tensile stress of panel and interface shearing stress are analyzed.The temperature stress in different panel dimensions is also calculated.Based on modulus of resilience of top base and module of existing asphalt,a complex factor of structure strength is put forward as R_j=E~(1/3)_t lg E_a,and a thickness design chart when R_j is less than 17 is obtained,which can be used for UTW pavement design. |
| Keywords: | road engineering ultra-thin whitetopping finite element complex factor of structural strength contact model |
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