考虑横观各向同性疲劳损伤的沥青路面数值模型

刘俊卿; 李倩; 王保实

doi:10.3969/j.issn.0258-2724.2016.04.010

考虑横观各向同性疲劳损伤的沥青路面数值模型

doi: 10.3969/j.issn.0258-2724.2016.04.010

基金项目:

国家自然科学基金资助项目(51178387)

陕西省教育厅自然科学专项基金资助项目(14JK1414)

详细信息

作者简介:
刘俊卿(1957-),男,教授,博导,研究方向为路面力学研究,电话:13991319036,E-mail:liujunqingjd@126.com

计量
- 文章访问数: 548
- HTML全文浏览量: 62
- PDF下载量: 208
- 被引次数: 0
出版历程
- 收稿日期: 2015-06-29
- 刊出日期: 2016-08-25

Numerical Model of Asphalt Pavement Considering Transversely Isotropic Fatigue Damage

摘要

摘要: 为研究车辆荷载作用下沥青路面的疲劳损伤问题,假定路面结构内受拉区的疲劳损伤横观各向同性,推导了沥青路面考虑横观各向同性疲劳损伤的本构方程.采用FORTRAN语言开发了材料子程序UMAT,结合有限元分析软件ABAQUS,得到了沥青路面的横观各向同性疲劳损伤数值分析模型.通过对该模型在不同荷载下的疲劳寿命分析,建立了荷载-疲劳寿命曲线,与试验结果进行对比,验证了模型的可靠性,并分析了损伤度及水平拉应力在路面结构内的分布规律.研究结果表明:疲劳损伤主要分布在基层底面双轮中心线附近,该位置最先产生疲劳裂纹,随着荷载作用次数增加,受损区水平拉应力在减小的同时,分布规律也发生了很大的改变,其最大值位置沿道路竖向从基层底面向上移动,沿道路横向从双轮中心线位置往两侧移动;本文方法得到的路面疲劳寿命与试验结果吻合较好,相对误差在4.57%~9.82%之间.
- 道路工程 /
- 沥青路面 /
- 横观各向同性 /
- 疲劳损伤 /
- 数值分析
Abstract: In order to study the fatigue damage in asphalt pavement, the damage that occurred in the tensile zone of pavement structure was assumed as being transversely isotropic. Based on this assumption, the asphalt pavement constitutive equation considering the transversely isotropic fatigue damage was derived. Then, using FORTRAN language to develop a material subroutine and a load subroutine, an ABAQUS finite element model of asphalt pavement was established based on the transversely isotropic fatigue damage theory. By analyzing the fatigue life of the model under different loads, the load-fatigue life curve was established in comparison with the test results to verify the reliability of the model. The distribution of damage degree and horizontal tensile stress in the pavement structure were studied by the finite element model. The results indicate that the fatigue damage mainly distributes at the base bottom near the middle line between the double wheels, where the fatigue crack appears first. With the load cycles increasing, the horizontal tensile stress decreases gradually, and its distribution in pavement structure changes. Its maximum position moves upward from the base bottom and transversely to the two sides from the middle line. The pavement life calculated by the proposed model is in good agreement with the experimental results, and the relative error is between 4.57% and 9.82%.
- road engineering /
- asphalt pavement /
- transversely isotropic /
- fatigue damage /
- numerical analysis

HTML全文

参考文献(15)

唐雪松,蒋持平,郑健龙. 沥青混合料疲劳过程的损伤力学分析[J]. 应用力学学报,2000,17(4):92-99.TANG Xuesong, JIANG Chiping, ZHENG Jianlong. Damage mechanical analysis for fatigue failure process of bituminous mixtures[J]. Chinese Journal of Applied Mechanics, 2000, 17(4):92-99.

葛折圣,黄晓明. 运用损伤力学理论预测沥青混合料的疲劳性能[J]. 交通运输工程学报,2003,3(1):40-42.GE Zhesheng, HUANG Xiaoming. Prediction of asphalt mixtures fatigue properties using damage mechanics[J]. Journal of Traffic and Transportation Engineering, 2003, 3(1):40-42.

CARPENTER S H, GHUZLAN K, SHEN S. Fatigue endurance limit for highway and airport pavements[J]. Transportation Research Record, 2003, 18(32):131-138.

CASTRO M, SANCHEZ J A. Estimation of asphalt concrete fatigue curves:a damage theory approach[J]. Construction and Building Materials, 2008, 22(6):1232-1238.

SI Zhiming, LITTLE D N, LYTTON R L. Characterization of microdamage and healing of asphalt concrete mixtures[J]. Journal of Materials in Civil Engineering, 2002, 14(6):461-470.

孙志林,黄晓明. 沥青路面线性疲劳损伤特性及应力状态演变规律[J]. 公路交通科技,2012,29(5):1-5.SUN Zhiling, HUANG Xiaoming. Linear fatigue damage characteristics and stress evolution regularity of asphalt pavement[J]. Journal of Highway and Transportation Research and Development, 2012, 29(5):1-5.

孙志林,卓斌,廖中平. 沥青路面非线性疲劳损伤特性及应力状态演变规律[J]. 中南大学学报:自然科学版,2014,45(2):576-580.SUN Zhilin, ZHUO Bin, LIAO Zhongping. Nonlinear fatigue damage characteristics and stress evolution law of asphalt pavement[J]. Journal of Central South University:Science and Technology, 2014, 45(2):576-580.

陈俊. 路面工程[M]. 北京:清华大学出版社,2013:25-159.

LEMAITRE J. A continuous damage mechanics model for ductile materials[J]. Journal of Engineering Materials and Technology, 1985, 107:83-89.

CHOW C L, WANG J. An anisotropic theory elasticity for continuum damage mechanics[J]. Engineering Fracture Mechanics, 1987, 33:3-10.

郑健龙,吕松涛. 沥青混合料非线性疲劳损伤模型[J]. 中国公路学报,2009,22(5):21-28.ZHENG Jianlong, LV Songtao. Nonlinear fatigue damage model for asphalt mixtures[J]. China Journal of Highway and Transport, 2009, 22(5):21-28.

杨斌,陈拴发,王秉纲,等. 级配碎石裂缝缓解层防裂机理及足尺疲劳试验[J]. 公路交通科技,2006,23(12):37-40.YANG Bin, CHEN Shuanfa, WANG Binggang, et al. Anti-cracking mechanisms of graded crushed stone cracking relief layer and the full-scale fatigue experiments[J]. Journal of Highway and Transportation Research and Development, 2006, 23(12):37-40.

周志刚,袁秀湘. 加筋沥青路面APA试验及其非线性疲劳损伤分析[J]. 工程力学,2012,29(9):166-176.ZHOU Zhigang, YUAN Xiuxiang. APA test and nonlinear fatigue damage analysis of the reinforced asphalt pavement[J]. Engineering Mechanics, 2012, 29(9):166-176.

朱洪洲. 柔性基层沥青路面疲劳性能及设计方法研究[D]. 南京:东南大学,2004.

黄宝涛,袁鑫,于蕾,等. 行车速度对沥青路面疲劳损伤性能影响的数字试验[J]. 长安大学学报:自然科学版,2013,33(3):14-20.HUANG Baotao, YUAN Xin, YU Lei, et al. Influence of running speed on fatigue-damage performance of asphalt pavement based on numerical test[J]. Journal of Chang'an University:Natural Science Edition, 2013, 33(3):14-20.

施引文献

附加材料(0)

访问统计

点击查看大图

计量

文章访问数: 548
HTML全文浏览量: 62
PDF下载量: 208
被引次数: 0

考虑横观各向同性疲劳损伤的沥青路面数值模型

doi: 10.3969/j.issn.0258-2724.2016.04.010

作者简介: 刘俊卿(1957-),男,教授,博导,研究方向为路面力学研究,电话:13991319036,E-mail:liujunqingjd@126.com

计量

出版历程

Numerical Model of Asphalt Pavement Considering Transversely Isotropic Fatigue Damage

计量

出版历程

目录

作者简介:
刘俊卿(1957-),男,教授,博导,研究方向为路面力学研究,电话:13991319036,E-mail:liujunqingjd@126.com