沥青路面FWD标准检测规程与弯沉温度修正研究
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摘要
FWD是二十世纪七十年代末期发展起来的路面无破损弯沉技术,其测速快,精度高,操作方便。FWD检测的完整的弯沉盆信息为分析路面结构层材料性能提供了基础。目前我国公路部门有130多台FWD,由于缺乏相应的技术标准和统一的检测方法,相应造成测试数据的客观性、代表性与准确性得不到有力保证,影响其推广和应用。本文依托西部交通科技建设项目《沥青路面设计指标和参数研究—沥青路面结构性能评价》,通过对比分析国内外的FWD检测方法、实际检测中的经验和对FWD应用单位进行调研,制定了适合我国的FWD标准检测规程。
利用室外足尺试验段温度测试数据,得出不同天气情况(晴天、多云、阴天)的温度场变化规律和温度梯度变化规律。对比国内外现有沥青路面代表温度预估方法,得出Bells3公式适用于我国沥青路面代表温度预估的结论。通过分析不同天气情况(晴天、多云、阴天)下的温度数据,利用统计方法得出沥青路面代表温度简单预估公式。
温度对沥青路面的承载能力和使用性能有显著影响。在高温气候环境下,沥青混凝土路面发生软化现象,造成整体弯沉值变大,模量降低。低温气候环境下,沥青混凝土发生硬化现象,造成整体弯沉值变小,模量提高。因此,FWD实测弯沉值应当修正到标准温度或其它代表温度下的弯沉值。将沥青路面按土基模量、基层模量、基层厚度、面层厚度分为若干亚类,利用BISAR3分析各亚类沥青路面弯沉温度修正系数,分查表法和公式法两种方法得出沥青路面弯沉修正方法,并利用试验路验证了修正公式的准确性。对沥青路面FWD弯沉指标进行分类,对每一种弯沉盆指标进行相关性分析,得出弯沉比指标DRi适合修正沥青路面FWD其它点弯沉的结论。同时,得到了沥青路面FWD其它点弯沉修正公式。
Nondestructive deflection testing using falling weight deflectometer has developed since late seventies of the twentieth century ,which has features of fast testing speed ,high precision and easy operation . The complete deflection basins testing by FWD provide the basis of analyzing pavement layer material properties. Currently there are more than 130 FWDS using by China’s road departments,however ,due to lack of appropriate standards and uniform testing methods ,the objectivity,representativeand accuracy have not an effective guarantee which affect use and promotion of FWDs.This paper,supported by the item of“Study on the Indicators and Parameters-Structural performance evaluation of Asphalt Pavement”,Which sponsored by Western Communications Construction Scientific and Technological Project.By comparing and analyzing FWD testing methods at home and abroad ,plus with the experience of actual FWD detection and visiting the FWD using units ,the FWD standard testing protocol for China is formulated.
By using the data of full-scale test section,the variation trend of temperature field and temperature gradient in different weather condition(sunny,overcast,cloudy) is obtained. Through comparison of exsiting asphalt pavement temperature predicting methods at home and abroad, Bells3 model can be used in China’s asphalt pavement temperature prediction.By analyzing the temperature data using statistical method in different weather condition(sunny,overcast,cloudy),the simple temperature prediction model is established.
Temperature has significant influece for the asphalt pavement.At high temperature,the asphalt concrete softening phenomenon occurs ,resulting in larger overal deflection and smaller modulus.At low temperature,the asphalt concrete hardening phenomenon occurs,resulting in smaller overal deflection and larger modulus.Thus,FWD testing defelction data should be corrected to the standard data at standard temperature or other representative temperature. The asphalt pavement can be devided into several subgroups based on subgrade modulus,base modulus,base thickness and surface layer thickness.The asphalt pavement deflection correction method containing table method and formula method are obtained by using BISAR3 to analyzing various asphalt pavement deflection pavement correction factor.At last,classify the deflection basin indicators,and then do correlation index analysis of each indicators,the conclusion of DRi is more suitable to correct the FWD other point deflection is gained.Meanwhile,the FWD other point deflection correction methods is established.
利用室外足尺试验段温度测试数据,得出不同天气情况(晴天、多云、阴天)的温度场变化规律和温度梯度变化规律。对比国内外现有沥青路面代表温度预估方法,得出Bells3公式适用于我国沥青路面代表温度预估的结论。通过分析不同天气情况(晴天、多云、阴天)下的温度数据,利用统计方法得出沥青路面代表温度简单预估公式。
温度对沥青路面的承载能力和使用性能有显著影响。在高温气候环境下,沥青混凝土路面发生软化现象,造成整体弯沉值变大,模量降低。低温气候环境下,沥青混凝土发生硬化现象,造成整体弯沉值变小,模量提高。因此,FWD实测弯沉值应当修正到标准温度或其它代表温度下的弯沉值。将沥青路面按土基模量、基层模量、基层厚度、面层厚度分为若干亚类,利用BISAR3分析各亚类沥青路面弯沉温度修正系数,分查表法和公式法两种方法得出沥青路面弯沉修正方法,并利用试验路验证了修正公式的准确性。对沥青路面FWD弯沉指标进行分类,对每一种弯沉盆指标进行相关性分析,得出弯沉比指标DRi适合修正沥青路面FWD其它点弯沉的结论。同时,得到了沥青路面FWD其它点弯沉修正公式。
Nondestructive deflection testing using falling weight deflectometer has developed since late seventies of the twentieth century ,which has features of fast testing speed ,high precision and easy operation . The complete deflection basins testing by FWD provide the basis of analyzing pavement layer material properties. Currently there are more than 130 FWDS using by China’s road departments,however ,due to lack of appropriate standards and uniform testing methods ,the objectivity,representativeand accuracy have not an effective guarantee which affect use and promotion of FWDs.This paper,supported by the item of“Study on the Indicators and Parameters-Structural performance evaluation of Asphalt Pavement”,Which sponsored by Western Communications Construction Scientific and Technological Project.By comparing and analyzing FWD testing methods at home and abroad ,plus with the experience of actual FWD detection and visiting the FWD using units ,the FWD standard testing protocol for China is formulated.
By using the data of full-scale test section,the variation trend of temperature field and temperature gradient in different weather condition(sunny,overcast,cloudy) is obtained. Through comparison of exsiting asphalt pavement temperature predicting methods at home and abroad, Bells3 model can be used in China’s asphalt pavement temperature prediction.By analyzing the temperature data using statistical method in different weather condition(sunny,overcast,cloudy),the simple temperature prediction model is established.
Temperature has significant influece for the asphalt pavement.At high temperature,the asphalt concrete softening phenomenon occurs ,resulting in larger overal deflection and smaller modulus.At low temperature,the asphalt concrete hardening phenomenon occurs,resulting in smaller overal deflection and larger modulus.Thus,FWD testing defelction data should be corrected to the standard data at standard temperature or other representative temperature. The asphalt pavement can be devided into several subgroups based on subgrade modulus,base modulus,base thickness and surface layer thickness.The asphalt pavement deflection correction method containing table method and formula method are obtained by using BISAR3 to analyzing various asphalt pavement deflection pavement correction factor.At last,classify the deflection basin indicators,and then do correlation index analysis of each indicators,the conclusion of DRi is more suitable to correct the FWD other point deflection is gained.Meanwhile,the FWD other point deflection correction methods is established.
引文
[1]何建中.截至2010年底全国公路网总里程达到398.4万公里[EB/OL]. http://www.gov.cn/jrzg/2011-03/24/content_1830573.htm,2011-03-24.
[2]魏翠玲,赵斌.由FWD的应用看路面弯沉检测技术的发展[J].工程力学,2001.(1):917-921
[3]和松,常成利.路面弯沉测试技术[J].公路,2002(7):96-100
[4]唐伯明,八谷好高.东京羽田机场道面FWD实测弯沉的温度特性分析[J].土木工程学报,1995(1):40-45
[5]陈飞.沥青路面FWD弯沉温度修正研究[D].交通部公路科学研究所,2006
[6]中华人民共和国交通部行业标准.公路路基路面现场测试规程(JTG E60—2008)[S].北京:人民交通出版社,2008
[7] Manual for FWD testing in the Long-Term Pavement Performance Program. SHRP-P-661,1993
[8] Long-Term Pavement Performance Program manual for FWD FHWA-HRT-06-132,2006
[9] Standard test method for deflections with a falling-weight-type impulse load device. ASTM:Designation: D 4694– 96 (Reapproved 2008)
[10] Falling Weight Deflectometer usage[S].TRB,2008
[11] FWD使用手册[M].日本道路协会,1998
[12]中华人民共和国交通部行业标准.公路沥青路面设计规范(JTG D50—2006)[S].北京:人民交通出版社,2008
[13]孙立军,秦健.沥青路面温度场的预估模型[J].同济大学学报(自然科学版), 2006(4):481-483
[14] AASHTO guide for design of pavement structures[S], AASHTO 1986
[15] AI guide for Superpave level Mix design[S],1995
[16] Lukanen,et al.Temperature predictions and adjustment factors for asphalt pavement[J].FHWA-RD-98-085,2000
[17] Paker H.M,Kim Y.R ,Park S Temperature correction of multiload-level Falling Weight Defectometer deflections. [J]. TRB, 2002
[18] AASHTO Guide for Design of Pavement Structures[S].AASHTO,1993
[19]查旭东.沥青路面反算模量的温度修正[J].公路.2002(6):51-53
[20]录慧丽.路面温度与弯沉及其反算模量修正关系的研究[D].大连理工大学.2006
[21]陈柏瑞.落锤式挠度仪于台湾国道铺面挠度校估模式之建立[D].台湾国立中央大学硕士论文,2008
[22]钟伟达.应用冲击式挠度仪观测路面结构强度之研究[D].台湾国立中央大学硕士论文,2000
[23]刘伯莹,姚祖康.公路沥青路面设计指南[R].中交公路规划设计院有限公司.2007
[24]刘伯莹,姚祖康.沥青路面设计指标和参数研究[R].中交公路规划设计院有限公司.2007
[25] Y.Richard Kim,Bradley O.Hibbs,Yung-Chien Lee Temperature correction of deflections and Backcalculated Asphalt Concrete Moduli.[J]. TRR, 1995
[26]郑元勋.沥青路面动态弯沉及反算模量的温度修正关系[D].大连理工大学2009
[27]董元帅.沥青路面动态弯沉综合修正系数研究[D].重庆交通大学2010
[28]唐伯明,朱洪洲,董元帅,陈森,谢国栋.沥青路面结构评价研究专题综述[R].重庆:重庆交通大学,2010
[29]朱洪洲,黄晓明.沥青混合料高温稳定性影响因素分析[J].公路交通科技.2004(4):1-4
[30]康海贵,郑元勋,蔡迎春,录慧丽.基于FWD的沥青路面弯沉及反算模量的温度修正[J].中外公路.2007(12):43-46
[31]左明文.沥青路面弯沉测定值温度修正的研究[J].华东公路.1996(8):3-7
[32]包正荣.沥青路面弯沉值的变化及测试[J].交通科技.2007,(1):43-45
[33]中华人民共和国交通部行业标准.公路工程质量检验评定标准(JTG F80/1—2004)[S].北京:人民交通出版社,2004
[34]姚祖康.沥青路面设计指标和参数研究专题综述[M].上海:同济大学.2008
[35] SHRP Procedure for Temperature Correction of Maximum Deflections. SHRP-P-654,1993
[36]刘荣辉,钱国平,郑健龙.周期性气候条件下沥青路面温度场计算方法与研究[J].长沙理工学院学报.2002(6):71-75
[37]王丽道路结构温度场实测研究[J].公路2003(8):30-34
[38]黄立葵,贾璐,万剑平,万智.沥青路面温度状况的统计分析[J].中南公路工程2005(9):8-10
[39]秦健,孙立军.沥青路面温度场的分布规律[J].公路交通科技2006(8):18-21
[40]康海贵,郑元勋,蔡迎春,刘艳.实测沥青路面温度场分布规律的回归分析[J].中国公路学报2007(11):13-17
[41]秦健,孙立军.国外沥青路面温度预估方法综述[J].中外公路2005(12):19-23
[42]张阳.沥青路面温度预测模型及应用[J].北方交通2008(9):65-69
[43]姚祖康.沥青路面的温度状况.上海:同济大学2008(9)
[44]康海贵,郑元勋,蔡迎春,录慧丽.基于FWD的沥青路面弯沉及反算模量的温度修正[J].中外公路2007(12):43-46
[45]郑元勋,康海贵,蒋宝钧.沥青路面反算模量的温度修正研究四川建筑科学研究[J] .2008(12):11-15
[46]陈飞,孟书涛.沥青路面FWD弯沉值温度修正理论研究[J].公路交通科技(应用技术版)2009(5):63-65
[47]孟可令.对沥青路面回弹弯沉温度修正方法的改进及探讨[J].公路交通科技(应用技术版) 2009(2):63-67
[48]靳杰.沥青路面回弹弯沉温度修正方法改进探讨[J].广东公路交通2009(3)
[49]陈春兰.沥青路面回弹弯沉温度修正方法[J].科技资讯2009
[50]黄大喜,赵延庆.昼夜温度及交通量变化对沥青路面响应及性能的影响[J].内蒙古公路与运输2008(3):37-39
[51]孟岩,李志勇,梅迎军,陆跃飞.沥青混合料抗压模量温度修正系数研究[J].同济大学学报(自然科学版)2008(2):182-186
[52]贾璐,孙立军,黄立葵,秦健.沥青路面温度场数值预估模型[J].同济大学学报(自然科学版)2007(8):1040-1043
[2]魏翠玲,赵斌.由FWD的应用看路面弯沉检测技术的发展[J].工程力学,2001.(1):917-921
[3]和松,常成利.路面弯沉测试技术[J].公路,2002(7):96-100
[4]唐伯明,八谷好高.东京羽田机场道面FWD实测弯沉的温度特性分析[J].土木工程学报,1995(1):40-45
[5]陈飞.沥青路面FWD弯沉温度修正研究[D].交通部公路科学研究所,2006
[6]中华人民共和国交通部行业标准.公路路基路面现场测试规程(JTG E60—2008)[S].北京:人民交通出版社,2008
[7] Manual for FWD testing in the Long-Term Pavement Performance Program. SHRP-P-661,1993
[8] Long-Term Pavement Performance Program manual for FWD FHWA-HRT-06-132,2006
[9] Standard test method for deflections with a falling-weight-type impulse load device. ASTM:Designation: D 4694– 96 (Reapproved 2008)
[10] Falling Weight Deflectometer usage[S].TRB,2008
[11] FWD使用手册[M].日本道路协会,1998
[12]中华人民共和国交通部行业标准.公路沥青路面设计规范(JTG D50—2006)[S].北京:人民交通出版社,2008
[13]孙立军,秦健.沥青路面温度场的预估模型[J].同济大学学报(自然科学版), 2006(4):481-483
[14] AASHTO guide for design of pavement structures[S], AASHTO 1986
[15] AI guide for Superpave level Mix design[S],1995
[16] Lukanen,et al.Temperature predictions and adjustment factors for asphalt pavement[J].FHWA-RD-98-085,2000
[17] Paker H.M,Kim Y.R ,Park S Temperature correction of multiload-level Falling Weight Defectometer deflections. [J]. TRB, 2002
[18] AASHTO Guide for Design of Pavement Structures[S].AASHTO,1993
[19]查旭东.沥青路面反算模量的温度修正[J].公路.2002(6):51-53
[20]录慧丽.路面温度与弯沉及其反算模量修正关系的研究[D].大连理工大学.2006
[21]陈柏瑞.落锤式挠度仪于台湾国道铺面挠度校估模式之建立[D].台湾国立中央大学硕士论文,2008
[22]钟伟达.应用冲击式挠度仪观测路面结构强度之研究[D].台湾国立中央大学硕士论文,2000
[23]刘伯莹,姚祖康.公路沥青路面设计指南[R].中交公路规划设计院有限公司.2007
[24]刘伯莹,姚祖康.沥青路面设计指标和参数研究[R].中交公路规划设计院有限公司.2007
[25] Y.Richard Kim,Bradley O.Hibbs,Yung-Chien Lee Temperature correction of deflections and Backcalculated Asphalt Concrete Moduli.[J]. TRR, 1995
[26]郑元勋.沥青路面动态弯沉及反算模量的温度修正关系[D].大连理工大学2009
[27]董元帅.沥青路面动态弯沉综合修正系数研究[D].重庆交通大学2010
[28]唐伯明,朱洪洲,董元帅,陈森,谢国栋.沥青路面结构评价研究专题综述[R].重庆:重庆交通大学,2010
[29]朱洪洲,黄晓明.沥青混合料高温稳定性影响因素分析[J].公路交通科技.2004(4):1-4
[30]康海贵,郑元勋,蔡迎春,录慧丽.基于FWD的沥青路面弯沉及反算模量的温度修正[J].中外公路.2007(12):43-46
[31]左明文.沥青路面弯沉测定值温度修正的研究[J].华东公路.1996(8):3-7
[32]包正荣.沥青路面弯沉值的变化及测试[J].交通科技.2007,(1):43-45
[33]中华人民共和国交通部行业标准.公路工程质量检验评定标准(JTG F80/1—2004)[S].北京:人民交通出版社,2004
[34]姚祖康.沥青路面设计指标和参数研究专题综述[M].上海:同济大学.2008
[35] SHRP Procedure for Temperature Correction of Maximum Deflections. SHRP-P-654,1993
[36]刘荣辉,钱国平,郑健龙.周期性气候条件下沥青路面温度场计算方法与研究[J].长沙理工学院学报.2002(6):71-75
[37]王丽道路结构温度场实测研究[J].公路2003(8):30-34
[38]黄立葵,贾璐,万剑平,万智.沥青路面温度状况的统计分析[J].中南公路工程2005(9):8-10
[39]秦健,孙立军.沥青路面温度场的分布规律[J].公路交通科技2006(8):18-21
[40]康海贵,郑元勋,蔡迎春,刘艳.实测沥青路面温度场分布规律的回归分析[J].中国公路学报2007(11):13-17
[41]秦健,孙立军.国外沥青路面温度预估方法综述[J].中外公路2005(12):19-23
[42]张阳.沥青路面温度预测模型及应用[J].北方交通2008(9):65-69
[43]姚祖康.沥青路面的温度状况.上海:同济大学2008(9)
[44]康海贵,郑元勋,蔡迎春,录慧丽.基于FWD的沥青路面弯沉及反算模量的温度修正[J].中外公路2007(12):43-46
[45]郑元勋,康海贵,蒋宝钧.沥青路面反算模量的温度修正研究四川建筑科学研究[J] .2008(12):11-15
[46]陈飞,孟书涛.沥青路面FWD弯沉值温度修正理论研究[J].公路交通科技(应用技术版)2009(5):63-65
[47]孟可令.对沥青路面回弹弯沉温度修正方法的改进及探讨[J].公路交通科技(应用技术版) 2009(2):63-67
[48]靳杰.沥青路面回弹弯沉温度修正方法改进探讨[J].广东公路交通2009(3)
[49]陈春兰.沥青路面回弹弯沉温度修正方法[J].科技资讯2009
[50]黄大喜,赵延庆.昼夜温度及交通量变化对沥青路面响应及性能的影响[J].内蒙古公路与运输2008(3):37-39
[51]孟岩,李志勇,梅迎军,陆跃飞.沥青混合料抗压模量温度修正系数研究[J].同济大学学报(自然科学版)2008(2):182-186
[52]贾璐,孙立军,黄立葵,秦健.沥青路面温度场数值预估模型[J].同济大学学报(自然科学版)2007(8):1040-1043