沥青路面裂纹扩展数值模拟及影响因素分析

重庆交通大学学报（自然科学版） ›› 2006, Vol. 25 ›› Issue (3): 36-39.

沥青路面裂纹扩展数值模拟及影响因素分析

毛成^1,2，邱延峻¹，李云鹏³

1.西南交通大学土木工程学院，四川成都 610031；2.四川省交通厅公路规划勘察设计研究院，四川成都 610041； 3.石油大学(北京)机电工程学院，北京 10224

收稿日期:2005-04-25 修回日期:2015-05-18 出版日期:2006-06-15 发布日期:2015-05-18
作者简介:毛成(1973—)，男，四川荥经人，博士，从事路面工程设计与研究工作

Numerical simulafion of asphalt pavement crack propagation and analysis of influence factors

MAO Cheng^1,2， QIU Yan-jun¹ ， LI Yun-peng³

1.School Civil Engineering，Southwest Jiaotong University，Sichuan Chengdu 610031，China ；2.Sichuan Province Communications Depanment Highway Planning Suwey Design and Research Insitute, Sichuan Chengdu 610041, China; 3.School of Mechanical and Electrical Engineering,University of Petroleum,Beijing; 102249, China

Received:2005-04-25 Revised:2015-05-18 Online:2006-06-15 Published:2015-05-18

摘要/Abstract

摘要： 应用线弹性断裂力学理论结合同时考虑交通与温度载荷的有限元方法来研究沥青路面裂纹扩展路径．采用1／4等参奇异性单元模拟裂纹尖端的应力奇异性，运用窗口移动技术模拟裂纹扩展路径，并发展了沥青路面裂纹扩展模拟程序．应用该程序模拟了不同荷载作用位置下路面结构中表面和基层底面裂纹的扩展情况，同时研究了路面结构层模量组合对沥青路面裂纹扩展的影响．模拟表明，该方法能较好地模拟裂纹扩展行为，有助于更好地了解沥青路面的开裂行为

关键词: 沥青路面, 裂纹扩展路径, 应力强度因子, 温度应力, 数值模拟, 弹性模量

Abstract: In order to study asphalt pavement crack propagation paths,the linear elastic fracture mechanics(LEFM) theory and finite element method(FEM) that incorporate traffic load and temperature stress are used in this paper.Using quarter point collapsed singular isoparametric element, the stress singularity at the vicinity of crack tip is simulated.The crack propagation paths are simulated by using window moviing; tech- nique(WMT).Based on these,an asphalt pavement crack propagation paths simulation(APCPPS2D)program is developed.Under the various load location cases, the crack propagation behavior of surface crack and base bottom crack are simulated using APCPPS2D.The influences of layer modulus combination on pavement cracking are studied.The simulation results indicate that this method can simulate crack propagation paths and help to understand crack behavior of asphalt pavement in a better way.

Key words: asphalt pavement, crack propagatoin path, stress intensity factor, temperature stress, numenical simulation, elastic modulus

中图分类号:

U416.21

毛成，邱延峻，李云鹏. 沥青路面裂纹扩展数值模拟及影响因素分析[J]. 重庆交通大学学报（自然科学版）, 2006, 25(3): 36-39.

MAO Cheng， QIU Yan-jun ， LI Yun-peng. Numerical simulafion of asphalt pavement crack propagation and analysis of influence factors[J]. Journal of Chongqing Jiaotong University(Natural Science), 2006, 25(3): 36-39.

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