沈阳市市政道路结构研究
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摘要
近些年来,沈阳市的市政道路建设发展迅速,半刚性基层沥青路面破坏日益严重,为有效的解决沈阳市市政道路半刚性路面存在的反射裂缝问题,从路面结构出发,对沈阳市市政道路路面结构进行研究,采用组合式(如密级配沥青碎石或级配碎石与水泥稳定碎石)作基层来推迟或延缓反射裂缝发生,以期对沈阳市政的现有路面状况有所改善,从长远利益看,延长了路面寿命,减少养护维修费用。
论文从沈阳市自然区划与沥青路面使用性能出发,对沈阳市市政道路材料进行研究选择,并主干路进行路面结构方面研究,以设计弯沉、层底拉应力与剪应力为控制指标,拟定不同的沥青路面结构形式。并采用弹性层状体系理论方法对路面结构进行应力应变分析,分析结构层厚度的变化对计算弯沉值与层底拉应力的影响,并结合路面结构的经济效益评价以及材料的抗剪切性能,进行柔性基层沥青路面与组合式基层沥青路面结构方案比选,最终推荐了适合沈阳市主干路的路面结构方案。
论文得出不同深度下剪应力的变化规律,确定剪应力的最不利位置,并比较了组合式结构与柔性基层结构的层厚对应力、弯沉的变化规律,均起到了缓解反射裂缝的效果,同时要求面层材料的抗剪切性能良好；同时对路面结构的经济效益进行评估,得出组合式路面结构与柔性基层路面结构相比经济性好。综合考虑力学与经济效益评估,推荐了组合式沥青路面结构作为最后的路面结构方案。
In recent years,town roads construction in Shenyang develops rapidly as with the number of vehicles grows constantly, while road situation allows no optimist, the destruction of semi-rigid base asphalt pavement becomes mre and more severe which needs to be justified from structural aspect. To solve the reflection cracks exist in town roads of Shenyang efficiently, flexible materials(bituminous stabilized broken-stone, graded broken stone and the cement stable macadam)were recommended as base's material to postpone or defer the occasions of reflection cracks. In order to improve the conditions of municipal road in Shenyang, from the long-term interests, the structure will extend the pavement life and reduce maintenance costs.
This paper firstly starts from natural regionalization and service performance of Shenyang, makes choices and study on Shenyang's town road construction material, investigates on premary road's pavement structure,and different asphalt pavement structures were made as initial drafts according to the guideposts of designed curve and sink value. Secondly,this paper makes ess-strain analyses on road structures using elastic layer system theory method, and combines road construction cost with economical benefit evaluation and material's anti-shearing perforamnce, this paper makes ancomparison betweent flexible asphalt pavement and section asphalt pavement construction. Finally, it is recommended that ultimate pavement structural types fit for Shenyang's primary roads.
This paper gets the changing rules of shearing force under different depthes, fixes the worst positions of shear force, and compares the composite structure with the flexible grassroots structure of the thick layer of stress, the change rule of deflection, both of them have the effect of relieving reflection crack, also asked the materials of the top shear performance is good; At the same time, the economic benefits of pavement are assessmented, and combined with the flexible pavement structure that the pavement structure better economic compared. Comprehensive consideration of the mechanics and economic efficiency evaluation, it recommended the combined asphalt pavement structure as the last of the pavement structure scheme.
论文从沈阳市自然区划与沥青路面使用性能出发,对沈阳市市政道路材料进行研究选择,并主干路进行路面结构方面研究,以设计弯沉、层底拉应力与剪应力为控制指标,拟定不同的沥青路面结构形式。并采用弹性层状体系理论方法对路面结构进行应力应变分析,分析结构层厚度的变化对计算弯沉值与层底拉应力的影响,并结合路面结构的经济效益评价以及材料的抗剪切性能,进行柔性基层沥青路面与组合式基层沥青路面结构方案比选,最终推荐了适合沈阳市主干路的路面结构方案。
论文得出不同深度下剪应力的变化规律,确定剪应力的最不利位置,并比较了组合式结构与柔性基层结构的层厚对应力、弯沉的变化规律,均起到了缓解反射裂缝的效果,同时要求面层材料的抗剪切性能良好；同时对路面结构的经济效益进行评估,得出组合式路面结构与柔性基层路面结构相比经济性好。综合考虑力学与经济效益评估,推荐了组合式沥青路面结构作为最后的路面结构方案。
In recent years,town roads construction in Shenyang develops rapidly as with the number of vehicles grows constantly, while road situation allows no optimist, the destruction of semi-rigid base asphalt pavement becomes mre and more severe which needs to be justified from structural aspect. To solve the reflection cracks exist in town roads of Shenyang efficiently, flexible materials(bituminous stabilized broken-stone, graded broken stone and the cement stable macadam)were recommended as base's material to postpone or defer the occasions of reflection cracks. In order to improve the conditions of municipal road in Shenyang, from the long-term interests, the structure will extend the pavement life and reduce maintenance costs.
This paper firstly starts from natural regionalization and service performance of Shenyang, makes choices and study on Shenyang's town road construction material, investigates on premary road's pavement structure,and different asphalt pavement structures were made as initial drafts according to the guideposts of designed curve and sink value. Secondly,this paper makes ess-strain analyses on road structures using elastic layer system theory method, and combines road construction cost with economical benefit evaluation and material's anti-shearing perforamnce, this paper makes ancomparison betweent flexible asphalt pavement and section asphalt pavement construction. Finally, it is recommended that ultimate pavement structural types fit for Shenyang's primary roads.
This paper gets the changing rules of shearing force under different depthes, fixes the worst positions of shear force, and compares the composite structure with the flexible grassroots structure of the thick layer of stress, the change rule of deflection, both of them have the effect of relieving reflection crack, also asked the materials of the top shear performance is good; At the same time, the economic benefits of pavement are assessmented, and combined with the flexible pavement structure that the pavement structure better economic compared. Comprehensive consideration of the mechanics and economic efficiency evaluation, it recommended the combined asphalt pavement structure as the last of the pavement structure scheme.
引文
[1]中华人民共和国行业标准《公路沥青路面设计规范》(JTG D50-2006),北京：人民交通出版社,2006年10月
[2]中华人民共和国行业标准《公路沥青路面施工技术规范》(JTGF40-2004),北京：人民交通出版社,2004年11月
[3]邓学均.路基路面工程[M].北京：人民交通出版社,2005.8
[4]张起森.高等级路面结构设计理论与方法[M].北京：人民交通出版社,2005.8
[5]李福普,严二虎.沥青稳定碎石与级配碎石结构设计与施工技术应用指南[M].北京：人民交通出版社,2009.5
[6]孙立军.沥青路面结构行为理论[M].北京：人民交通出版社,2005.11
[7]沈金安.国外沥青路面设计方法总汇[M].北京：人民交通出版社,2004.4
[8]沈金安.沥青及沥青混合料路用性能[M].北京：人民交通出版社,2001.1
[9]曾运清.碎石化技术在旧混凝土路面大修中的应用[J].广西质量监督导报,2008,93(9)：29－30
[10]黄仰贤.路面分析与设计.人民交通出版社.1994.10
[11]赵小洁.天津滨海新区重载沥青路面结构研究[D][硕士论文].长安大学,2010.6
[12]李昆.滨海新区集疏港道路柔性基层沥青路面结构研究[D][硕士论文].长安大学,2010.6
[13]杨群,黄晓明.基层模量对路面性能的影响分析[J].东南大学学报(自然科学版),2001.4
[14]雷宇,李刚.柔性基层沥青路面各层模量变化对沥青路面设计指标的影响[J].中外公路,2009.06
[15]聂忆华.全柔式长寿命沥青路面(FF-LLAP)结构及其设计方法研究[D.][博士论文].中南大学,2007.10
[16]朱洪州.柔性基层沥青路面疲劳性能及设计方法研究[D][博士论文].东南大学,2005.04
[17]林绣贤.柔性路面结构设计方法[M].北京,人民交通出版社,1999
[18]胡斌.沥青路面柔性基层－沥青稳定碎石－应用研究,长安大学硕士学位论文[J].2005
[19]孙德栋.彭波.沥青路面设计与施工技术.黄河水利出版社,2002.10
[20]沈金安,李福晋,陈景.高速公路沥青路面早期损坏分析与防治对策[M].人民交通出版社,2004.12
[21]范善才.沥青稳定碎石结构层设计参数的研究.重庆交通大学工程硕士学位论文,2008.03
[22]栾海.沥青路面柔性基层与半刚性基层的优化组合研究.第六届全国路面材料及新技术研讨会论文集
[23]European Long—Life Asphalt Pavements:Delivering What the Customer Wants. Transportation Research Board Annual Meeting[R].2002.1
[24]Design and Evaluation of Large-Stone Asphalt mixes.NCHRP Report 386,1997
[25]Perpetual Pavement—A Synthesis.APA (Asphalt Pavement Alliance),2002
[26]王树森等.高等级公路沥青路面柔性基层的研究[R].交通部优秀青年专业技术人才专项经费资助项目研究报告,2002
[27]刘义如.柔性基层沥青路面结构设计研究.河北工业大学硕士学位论文,2007.11
[28]Federal Highway Administration,Interactive Highway Safety Design.Model (IHSDM), Washington.D.C,1995
[29]PETER.S.Pell.Development in Highway Pavement Engineering.1982
[30]沙庆林.高速公路沥青路面早期破坏现象及预防[M].北京：人民交通出版社,2001
[31]叶国铮.柔性路面疲劳与优化设计[M].北京：人民交通出版社,1989
[32]袁宏伟.沥青稳定碎石基层材料设计方法研究.长安大学硕士学位论文,2003.5
[33]张静利.浅析经典路面结构分析方法的局限性和新的发展方向[J].公路交通技术,2004,75(1)：16－18
[34]唐军.沥青稳定碎石柔性基层路用性能及其应用研究[J].重庆交通大学硕士论文,2008.12
[35]廖陈林.厚层沥青路面压实特性研究长安大学硕士论文,2008.06
[36]马骉.多年冻土地区沥青路面材料组成与结构设计研究[J],长安大学博士论文,2006.06
[37]白楷.大粒径沥青稳定碎石柔性基层沥青路面力学性能研究[J],武汉理工大学硕士论文,2010.04
[38]朱洪洲.柔性基层沥青路面疲劳性能及设计方法研究[J],东南大学博士论文,2004.11
[2]中华人民共和国行业标准《公路沥青路面施工技术规范》(JTGF40-2004),北京：人民交通出版社,2004年11月
[3]邓学均.路基路面工程[M].北京：人民交通出版社,2005.8
[4]张起森.高等级路面结构设计理论与方法[M].北京：人民交通出版社,2005.8
[5]李福普,严二虎.沥青稳定碎石与级配碎石结构设计与施工技术应用指南[M].北京：人民交通出版社,2009.5
[6]孙立军.沥青路面结构行为理论[M].北京：人民交通出版社,2005.11
[7]沈金安.国外沥青路面设计方法总汇[M].北京：人民交通出版社,2004.4
[8]沈金安.沥青及沥青混合料路用性能[M].北京：人民交通出版社,2001.1
[9]曾运清.碎石化技术在旧混凝土路面大修中的应用[J].广西质量监督导报,2008,93(9)：29－30
[10]黄仰贤.路面分析与设计.人民交通出版社.1994.10
[11]赵小洁.天津滨海新区重载沥青路面结构研究[D][硕士论文].长安大学,2010.6
[12]李昆.滨海新区集疏港道路柔性基层沥青路面结构研究[D][硕士论文].长安大学,2010.6
[13]杨群,黄晓明.基层模量对路面性能的影响分析[J].东南大学学报(自然科学版),2001.4
[14]雷宇,李刚.柔性基层沥青路面各层模量变化对沥青路面设计指标的影响[J].中外公路,2009.06
[15]聂忆华.全柔式长寿命沥青路面(FF-LLAP)结构及其设计方法研究[D.][博士论文].中南大学,2007.10
[16]朱洪州.柔性基层沥青路面疲劳性能及设计方法研究[D][博士论文].东南大学,2005.04
[17]林绣贤.柔性路面结构设计方法[M].北京,人民交通出版社,1999
[18]胡斌.沥青路面柔性基层－沥青稳定碎石－应用研究,长安大学硕士学位论文[J].2005
[19]孙德栋.彭波.沥青路面设计与施工技术.黄河水利出版社,2002.10
[20]沈金安,李福晋,陈景.高速公路沥青路面早期损坏分析与防治对策[M].人民交通出版社,2004.12
[21]范善才.沥青稳定碎石结构层设计参数的研究.重庆交通大学工程硕士学位论文,2008.03
[22]栾海.沥青路面柔性基层与半刚性基层的优化组合研究.第六届全国路面材料及新技术研讨会论文集
[23]European Long—Life Asphalt Pavements:Delivering What the Customer Wants. Transportation Research Board Annual Meeting[R].2002.1
[24]Design and Evaluation of Large-Stone Asphalt mixes.NCHRP Report 386,1997
[25]Perpetual Pavement—A Synthesis.APA (Asphalt Pavement Alliance),2002
[26]王树森等.高等级公路沥青路面柔性基层的研究[R].交通部优秀青年专业技术人才专项经费资助项目研究报告,2002
[27]刘义如.柔性基层沥青路面结构设计研究.河北工业大学硕士学位论文,2007.11
[28]Federal Highway Administration,Interactive Highway Safety Design.Model (IHSDM), Washington.D.C,1995
[29]PETER.S.Pell.Development in Highway Pavement Engineering.1982
[30]沙庆林.高速公路沥青路面早期破坏现象及预防[M].北京：人民交通出版社,2001
[31]叶国铮.柔性路面疲劳与优化设计[M].北京：人民交通出版社,1989
[32]袁宏伟.沥青稳定碎石基层材料设计方法研究.长安大学硕士学位论文,2003.5
[33]张静利.浅析经典路面结构分析方法的局限性和新的发展方向[J].公路交通技术,2004,75(1)：16－18
[34]唐军.沥青稳定碎石柔性基层路用性能及其应用研究[J].重庆交通大学硕士论文,2008.12
[35]廖陈林.厚层沥青路面压实特性研究长安大学硕士论文,2008.06
[36]马骉.多年冻土地区沥青路面材料组成与结构设计研究[J],长安大学博士论文,2006.06
[37]白楷.大粒径沥青稳定碎石柔性基层沥青路面力学性能研究[J],武汉理工大学硕士论文,2010.04
[38]朱洪洲.柔性基层沥青路面疲劳性能及设计方法研究[J],东南大学博士论文,2004.11