沥青路面反算模量与沥青混合料动态模量的关系
|
摘要
为获取沥青路面结构层沥青材料模量参数,合理评价沥青路面结构性能,开展沥青路面反算模量与同温度下室内沥青混合料动态模量的关系研究。采用落锤式弯沉仪(FWD)对4个不同结构的沥青路面试验路进行测试,并通过路面结构埋设的温度传感器同步采集温度,对试验结果进行沥青层模量反算;采用沥青混合料性能试验机(AMPT)对试验路沥青材料进行动态模量试验,根据时温等效原理获取FWD测试的同温度下的沥青混合料模量值,结合沥青路面结构层厚度计算沥青混合料动态模量的当量模量;对沥青层同一温度下的FWD反算模量与动态模量的当量模量进行分析比较,建立回归模型。结果表明,不同路面结构的FWD反算模量与室内动态模量的关系基本一致,其变化趋势不依赖于沥青层厚度的变化;沥青路面FWD的反算模量和室内AMPT的模量呈非线性关系,当模量较小时,FWD反算模量要低于室内模量,随着模量的增加,在10000MPa附近时,二者的模量值是接近的,模量值再继续增大时,FWD反算模量的增加较快,明显大于室内动态模量,室内动态模量的增长趋于平缓。
In order to obtain the modulus parameters of asphalt material in asphalt pavement structure and evaluate the structural performance of asphalt pavement reasonably, the study on the relationship between back-calculated modulus of asphalt pavement and the dynamic modulus of indoor asphalt mixture at the same temperature was conducted. Falling weight deflectometer(FWD) was used to test four asphalt pavement test roads with different structures, and the temperature sensors embedded in the pavement structure were used to collect the temperature synchronously. The modulus of asphalt layer was back calculated by test results. Asphalt mixture performance tester(AMPT) were applied to testing the dynamic modulus of asphalt material in test road,and the modulus values of asphalt mixture in FWD test at the same temperature were obtained according to the time-temperature equivalence principle. In consideration of the thickness of asphalt pavement structural layer, the equivalent modulus of dynamic modulus of asphalt mixture was calculated. FWD back-calculated modulus and the equivalent modulus of dynamic modulus of asphalt layer at the same temperature are analyzed and compared,and a regression model was established. The results show that the relationships between FWD back-calculated modulus of different pavement structures and indoor dynamic modulus are basically identical, the variation trend of the relationships is independent of the thickness of the asphalt layer. FWD back-calculated modulus of asphalt pavement has nonlinear relation with the modulus of asphalt mixture of indoor AMPT. When the modulus values are low, the back-calculated modulus of FWD is lower than that of indoor modulus. With the increase of modulus, the two modulus values are close around 10000MPa. With further increase of modulus, the back-calculated modulus of FWD increases faster than the indoor modulus, while the increase of indoor dynamic modulus tends to be mild.
In order to obtain the modulus parameters of asphalt material in asphalt pavement structure and evaluate the structural performance of asphalt pavement reasonably, the study on the relationship between back-calculated modulus of asphalt pavement and the dynamic modulus of indoor asphalt mixture at the same temperature was conducted. Falling weight deflectometer(FWD) was used to test four asphalt pavement test roads with different structures, and the temperature sensors embedded in the pavement structure were used to collect the temperature synchronously. The modulus of asphalt layer was back calculated by test results. Asphalt mixture performance tester(AMPT) were applied to testing the dynamic modulus of asphalt material in test road,and the modulus values of asphalt mixture in FWD test at the same temperature were obtained according to the time-temperature equivalence principle. In consideration of the thickness of asphalt pavement structural layer, the equivalent modulus of dynamic modulus of asphalt mixture was calculated. FWD back-calculated modulus and the equivalent modulus of dynamic modulus of asphalt layer at the same temperature are analyzed and compared,and a regression model was established. The results show that the relationships between FWD back-calculated modulus of different pavement structures and indoor dynamic modulus are basically identical, the variation trend of the relationships is independent of the thickness of the asphalt layer. FWD back-calculated modulus of asphalt pavement has nonlinear relation with the modulus of asphalt mixture of indoor AMPT. When the modulus values are low, the back-calculated modulus of FWD is lower than that of indoor modulus. With the increase of modulus, the two modulus values are close around 10000MPa. With further increase of modulus, the back-calculated modulus of FWD increases faster than the indoor modulus, while the increase of indoor dynamic modulus tends to be mild.
引文
[1]查旭东.路面结构层反算方法综述[J].交通运输工程学报,2002,2(4):1-6(Zha Xudong.Summary of backcalculation methods of pavement layer moduli[J].Journal of Traffic and Transportation Engineering,2002,2(4):1-6(in Chinese))
[2]徐艳玲,唐伯明,谢国栋,等.基于FWD的沥青层反算模量修正系数[J].长安大学学报:自然科学版,2012,32(3):24-29(Xu Yanling,Tang Boming,Xie Guodong,et al.Back calculated modulus correction coefficient for asphalt concrete layer based on FWD[J].Journal of Chang’an University:Natural Science Edition,2012,32(3):24-29(in Chinese))
[3]Wang F,Lytton R L.System identification method for backcalculating pavement layer properties[J].Journal of the Transportation Research Board,1993,1384:1-7
[4]Fwa T F,Tan C Y,Chan W T.Backcalculation analysis of pavement-layer moduli using genetic algorithms[J].Transportation Research Record,1997,1570(1):134-142
[5]查旭东.沥青路面反算模量的温度修正[J].公路,2002(6):51-53(Zha Xudong.Temperature adjustment for back calculation moduli of asphalt pavement[J].Highway,2002(6):51-53(in Chinese))
[6]JTG D50-2017公路沥青路面设计规范[S].北京:人民交通出版社,2017(JTG D50-2017 Specifications for design of highway asphalt pavement[S].Beijing:China Communications Press,2017(in Chinese))
[7]Wei J C,Wang L,Xie G D.Correction factor of in-situ back-calculated modulus and laboratory dynamic modulus for pavement asphalt layer[C]//American Society of Civil Engineers GeoHunan International Conference 2011.Reston:ASCE Geotechnical Special Publication,2011:158-166
[8]庄传仪.基于加速加载响应的柔性基层沥青路面设计指标与参数研究[D].西安:长安大学,2012(Zhuang Chuanyi.Structural design indexes and parameters for flexible base asphalt pavement based on accelerated pavement testing[D].Xi’an:Chang’an University,2012(in Chinese))
[9]杨永顺,王林,高雪池,等.永久性沥青路面设计方法研究[R].济南:山东省交通运输厅公路局,2008(Yang Yongshun,Wang Lin,Gao Xuechi,et al.Research on perpetual pavement design method[R].Jinan:Road Bureau of Traffic Department of Shandong Province,2008(in Chinese))
[10]Timm D H,Newcomb D E.Perpetual pavement design for flexible pavements in the US[J].International Journal of Pavement Engineering,2006,7(2):111-119
[11]韩子东.道路结构温度场研究[D].西安:长安大学,2002(Han Zidong.Study on temperature field of the road structure[D].Xi’an:Chang’an University,2002(in Chinese))
[12]JTG E60-2008公路路基路面现场测试规程[S].北京:人民交通出版社,2008(JTG E60-2008 Field test methods of subgrade and pavement for highway engineering[S].Beijing:China Communication Press,2008(in Chinese))
[13]宋小金,曾梦澜,王林.沥青路面动态弯沉值的温度修正方法研究[J].公路交通科技,2016,33(1):22-26(Song Xiaojin,Zeng Menglan,Wang Lin.A method of temperature correction for asphalt pavement dynamic deflection[J].Journal of Highway and Transportation Research and Development,2016,33(1):22-26(in Chinese))
[14]Zeng M,Huang S C.Characterizing the asphaltaggregate mixtures using rheological properties of asphalt binders[J].Journal of Testing and Evaluation,2006,34(6):471-476
[15]Pellinen T K,Witczak M W.Stress dependent master curve construction for dynamic(complex)modulus[J].Journal of the Association of Asphalt Paving Technologists,2002,71:281-309
[16]Crovetti J,Titi H,Coenen A,et al.Materials characterization and analysis of the marquette interchange HMA perpetual pavement[R].Madison:Midwest Regional University Transportation Center,2008
[17]何曼君,张红东,陈维孝,等.高分子物理[M].第3版.上海:复旦大学出版社,2007(He Manjun,Zhang Hongdong,Chen Weixiao,et al.Polymer physics[M].3rd edition.Shanghai:Fudan University Press,2007(in Chinese))
[18]元松,单景松.基于FWD的柔性路面结构动力响应数值分析[J].长沙交通学院学报,2006,22(2):33-37(Yuan Song,Shan Jingsong.The numerical analysis of dynamic response of flexible pavement based on FWD[J].Journal of Changsha Communications University,2006,22(2):33-37(in Chinese))
[2]徐艳玲,唐伯明,谢国栋,等.基于FWD的沥青层反算模量修正系数[J].长安大学学报:自然科学版,2012,32(3):24-29(Xu Yanling,Tang Boming,Xie Guodong,et al.Back calculated modulus correction coefficient for asphalt concrete layer based on FWD[J].Journal of Chang’an University:Natural Science Edition,2012,32(3):24-29(in Chinese))
[3]Wang F,Lytton R L.System identification method for backcalculating pavement layer properties[J].Journal of the Transportation Research Board,1993,1384:1-7
[4]Fwa T F,Tan C Y,Chan W T.Backcalculation analysis of pavement-layer moduli using genetic algorithms[J].Transportation Research Record,1997,1570(1):134-142
[5]查旭东.沥青路面反算模量的温度修正[J].公路,2002(6):51-53(Zha Xudong.Temperature adjustment for back calculation moduli of asphalt pavement[J].Highway,2002(6):51-53(in Chinese))
[6]JTG D50-2017公路沥青路面设计规范[S].北京:人民交通出版社,2017(JTG D50-2017 Specifications for design of highway asphalt pavement[S].Beijing:China Communications Press,2017(in Chinese))
[7]Wei J C,Wang L,Xie G D.Correction factor of in-situ back-calculated modulus and laboratory dynamic modulus for pavement asphalt layer[C]//American Society of Civil Engineers GeoHunan International Conference 2011.Reston:ASCE Geotechnical Special Publication,2011:158-166
[8]庄传仪.基于加速加载响应的柔性基层沥青路面设计指标与参数研究[D].西安:长安大学,2012(Zhuang Chuanyi.Structural design indexes and parameters for flexible base asphalt pavement based on accelerated pavement testing[D].Xi’an:Chang’an University,2012(in Chinese))
[9]杨永顺,王林,高雪池,等.永久性沥青路面设计方法研究[R].济南:山东省交通运输厅公路局,2008(Yang Yongshun,Wang Lin,Gao Xuechi,et al.Research on perpetual pavement design method[R].Jinan:Road Bureau of Traffic Department of Shandong Province,2008(in Chinese))
[10]Timm D H,Newcomb D E.Perpetual pavement design for flexible pavements in the US[J].International Journal of Pavement Engineering,2006,7(2):111-119
[11]韩子东.道路结构温度场研究[D].西安:长安大学,2002(Han Zidong.Study on temperature field of the road structure[D].Xi’an:Chang’an University,2002(in Chinese))
[12]JTG E60-2008公路路基路面现场测试规程[S].北京:人民交通出版社,2008(JTG E60-2008 Field test methods of subgrade and pavement for highway engineering[S].Beijing:China Communication Press,2008(in Chinese))
[13]宋小金,曾梦澜,王林.沥青路面动态弯沉值的温度修正方法研究[J].公路交通科技,2016,33(1):22-26(Song Xiaojin,Zeng Menglan,Wang Lin.A method of temperature correction for asphalt pavement dynamic deflection[J].Journal of Highway and Transportation Research and Development,2016,33(1):22-26(in Chinese))
[14]Zeng M,Huang S C.Characterizing the asphaltaggregate mixtures using rheological properties of asphalt binders[J].Journal of Testing and Evaluation,2006,34(6):471-476
[15]Pellinen T K,Witczak M W.Stress dependent master curve construction for dynamic(complex)modulus[J].Journal of the Association of Asphalt Paving Technologists,2002,71:281-309
[16]Crovetti J,Titi H,Coenen A,et al.Materials characterization and analysis of the marquette interchange HMA perpetual pavement[R].Madison:Midwest Regional University Transportation Center,2008
[17]何曼君,张红东,陈维孝,等.高分子物理[M].第3版.上海:复旦大学出版社,2007(He Manjun,Zhang Hongdong,Chen Weixiao,et al.Polymer physics[M].3rd edition.Shanghai:Fudan University Press,2007(in Chinese))
[18]元松,单景松.基于FWD的柔性路面结构动力响应数值分析[J].长沙交通学院学报,2006,22(2):33-37(Yuan Song,Shan Jingsong.The numerical analysis of dynamic response of flexible pavement based on FWD[J].Journal of Changsha Communications University,2006,22(2):33-37(in Chinese))
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |