纤维沥青碎石应力吸收层配合比设计及作用机理研究
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摘要
沥青路面各结构层之间的连接状态直接影响到路面的整体性能,尤其是半刚性基层沥青路面,采用良好的层间处置方式不但能够有效地减少和避免路面病害发生,而且还能增强路面的整体承载能力。国内在沥青路面层间处置技术方面开展了相关研究,并提出了一些行之有效的层间处置措施,但仍未达到理想的状态。因此,本研究引入了国外的纤维沥青碎石封层技术,并用作沥青路面应力吸收层,对其组成设计方法及作用机理进行深入研究,为该项技术在我国的推广应用提供技术支持。
纤维沥青碎石应力吸收层的实施应考虑各地气候、交通及施工技术水平等特点,必须进行针对性的设计。本研究在调查分析山东省沥青路面层间病害的基础上,结合依托工程所在地区的交通及气候特点,采用有限元软件计算分析了沥青路面基、面层间接触状态对路面结构受力的影响；基于山东原材料供应状况,开展了纤维沥青碎石应力吸收层的配合比设计研究,研发了用于纤维沥青碎石性能试验的专用设备,通过大量的室内试验,测试了材料组成对纤维沥青碎石应力吸收层路用性能影响规律,建立了纤维沥青碎石应力吸收层路用性能评价指标体系,提出了适用山东省的纤维沥青碎石应力吸收层配合比设计方法。
本研究首次采用复合材料细观结构原理,对纤维沥青碎石应力吸收层的作用机理进行了深入分析,依据短纤维增强复合材料的作用原理,揭示了纤维-沥青界面粘结机理,提出了纤维沥青碎石应力吸收层“临界区概率强度”概念,通过“临界区”材料力学性能的研究,建立了“临界区概率强度”预估模型,以此作为评价纤维沥青碎石应力吸收层抗裂性能的依据,同时,还提出了纤维沥青碎石应力吸收层抗裂强度预估公式。应力吸收层的阻裂性能与短纤维含量具有直接关系,
通过纤维沥青碎石应力吸收层实体工程的实施,研究提出了纤维沥青碎石应力吸收层的施工关键技术以及以剪切、渗水及平整度为主的施工质量检测指标体系,为纤维沥青碎石应力吸收层在山东省乃至全国范围的推广提供了技术借鉴。
The condition of interlayer disposal in asphalt pavement is directly related to the overall performance of the pavement, especially of the semi-rigid pavement. Good interlayer disposal not only can effectively prevent or reduce pavement disease, but also enhance the integral bearing capacity of the road. Some research have been taken out to study with interlayer disposal of asphalt pavement, and made a number of effective measures for interlayer disposal. But the ideal state of interlayer disposal cannot be reached yet. So this research imported a new chip seal, the Fiber-reinforced Asphalt Chip Seal (FACS), used it as stress absorbing layer in asphalt pavement. Made a deep study of its mix proportion design and perform mechanism to provide a technical support for its extension and application.
To study with the FACS, we should consider with the climate, the transportation and construction technology and so on of different places, and then make a pertinent design. On the base of an investigation of the interlayer disease of asphalt pavement and considering with the climate and transportation situation in Shandong province, the research analyzed the effect of contact state between pavement base and surface layer to stress distribution in pavement with finite element software, and studied with the mix design of FACS used as stress absorbing layer according with availability of raw materials in Shandong, designed new experiment methods for mix design of FACS and invented special equipments for these mix design tests. Through a lot of experiments, we tested the effect law of materials composition to pavement performance of FACS, and then proposed a mix design method which is suitable in Shandong province and established a road performance evaluation index system for FACS used as stress absorbing layer.
The research made a deeply analysis of the mechanism of the FACS connected with the principle of composite structure in microscopic level for the first time. Using the knowledge of short fiber reinforced composite, the research revealed the bonding mechanism of the interface between fiber and asphalt, and used the concept of "probability of intensity of critical section" for the first time, to study the mechanical properties of FAS in "critical section", and then established a prediction model of "probability of intensity of critical section". Based on the model, it analyzed the cracking resistance of FAS and proposed the formula to predict the cracking resistance of FACS used as stress absorbing layer.
With the experience from test road engineering, the research has also summarized a index system composed of shearing test, water seepage test and smoothness test, provides reference for the construction of the FACS used as stress absorbing layer in Shandong province and even in the whole country.
纤维沥青碎石应力吸收层的实施应考虑各地气候、交通及施工技术水平等特点,必须进行针对性的设计。本研究在调查分析山东省沥青路面层间病害的基础上,结合依托工程所在地区的交通及气候特点,采用有限元软件计算分析了沥青路面基、面层间接触状态对路面结构受力的影响；基于山东原材料供应状况,开展了纤维沥青碎石应力吸收层的配合比设计研究,研发了用于纤维沥青碎石性能试验的专用设备,通过大量的室内试验,测试了材料组成对纤维沥青碎石应力吸收层路用性能影响规律,建立了纤维沥青碎石应力吸收层路用性能评价指标体系,提出了适用山东省的纤维沥青碎石应力吸收层配合比设计方法。
本研究首次采用复合材料细观结构原理,对纤维沥青碎石应力吸收层的作用机理进行了深入分析,依据短纤维增强复合材料的作用原理,揭示了纤维-沥青界面粘结机理,提出了纤维沥青碎石应力吸收层“临界区概率强度”概念,通过“临界区”材料力学性能的研究,建立了“临界区概率强度”预估模型,以此作为评价纤维沥青碎石应力吸收层抗裂性能的依据,同时,还提出了纤维沥青碎石应力吸收层抗裂强度预估公式。应力吸收层的阻裂性能与短纤维含量具有直接关系,
通过纤维沥青碎石应力吸收层实体工程的实施,研究提出了纤维沥青碎石应力吸收层的施工关键技术以及以剪切、渗水及平整度为主的施工质量检测指标体系,为纤维沥青碎石应力吸收层在山东省乃至全国范围的推广提供了技术借鉴。
The condition of interlayer disposal in asphalt pavement is directly related to the overall performance of the pavement, especially of the semi-rigid pavement. Good interlayer disposal not only can effectively prevent or reduce pavement disease, but also enhance the integral bearing capacity of the road. Some research have been taken out to study with interlayer disposal of asphalt pavement, and made a number of effective measures for interlayer disposal. But the ideal state of interlayer disposal cannot be reached yet. So this research imported a new chip seal, the Fiber-reinforced Asphalt Chip Seal (FACS), used it as stress absorbing layer in asphalt pavement. Made a deep study of its mix proportion design and perform mechanism to provide a technical support for its extension and application.
To study with the FACS, we should consider with the climate, the transportation and construction technology and so on of different places, and then make a pertinent design. On the base of an investigation of the interlayer disease of asphalt pavement and considering with the climate and transportation situation in Shandong province, the research analyzed the effect of contact state between pavement base and surface layer to stress distribution in pavement with finite element software, and studied with the mix design of FACS used as stress absorbing layer according with availability of raw materials in Shandong, designed new experiment methods for mix design of FACS and invented special equipments for these mix design tests. Through a lot of experiments, we tested the effect law of materials composition to pavement performance of FACS, and then proposed a mix design method which is suitable in Shandong province and established a road performance evaluation index system for FACS used as stress absorbing layer.
The research made a deeply analysis of the mechanism of the FACS connected with the principle of composite structure in microscopic level for the first time. Using the knowledge of short fiber reinforced composite, the research revealed the bonding mechanism of the interface between fiber and asphalt, and used the concept of "probability of intensity of critical section" for the first time, to study the mechanical properties of FAS in "critical section", and then established a prediction model of "probability of intensity of critical section". Based on the model, it analyzed the cracking resistance of FAS and proposed the formula to predict the cracking resistance of FACS used as stress absorbing layer.
With the experience from test road engineering, the research has also summarized a index system composed of shearing test, water seepage test and smoothness test, provides reference for the construction of the FACS used as stress absorbing layer in Shandong province and even in the whole country.
引文
[1]赵晓亮.纤维沥青碎石封层配合比设计研究[D].西安：长安大学,2010
[2]陈晓娟.纤维沥青碎石封层适应性及阻裂效应研究[D].西安：长安大学,2010
[3]张金荣.长寿命沥青路面层间处治技术研究[D].西安：长安大学,2008
[4]郭寅川.重交通高等级公路沥青路面层间处治技术研究[D].西安：长安大学,2009
[5]中华人民共和国行业标准.公路沥青路面设计规范(JTGD50-2006)[S].北京：人民交通出版社,2006
[6]胡小弟,孙立军,刘兆金.沥青路面非均布荷载下层间接触条件不同时力学响应的三维有限元分析[J].公路交通科技,2003,Vol.20,No.3-1-4
[7]Douglas.D.Gransberg, P.E, Ellker. Karaea, Sanjaya. Senadheera. Caleulating roller requirements for chip seal Projects. Journal of Construetion Engineering and Management(ASCE),2004,130(3):378-384
[8]张宗辉.公路建设养护新技术—纤维封层[J].石油沥青,2008.22(3)：41-43
[9]北京埃盟泰机械设备有限公司.纤维封层设备施工手册.2007.06.09
[10]沈金安.高速公路沥青路面早期损坏分析与防治对策[M].北京：人民交通出版社,2004.30-100
[11]陈燎焱.山东省高速公路沥青路面典型结构研究[D].西安：长安大学,2008
[12]刘丽.沥青路面层间处治技术研究[D].西安：长安大学,2008
[13]Benedito de S. Bueno and Wander R. da Silva. Engineering Properties of Fiber Reinforced Cold Asphalt Mixes. Journal of Environmental Engineering(ASCE),2003,129(10):952-955
[14]冯德成,宋宇.沥青路面层间结合状态试验与评价方法研究[J].哈尔滨工业大学学报,2007,36(4)：627-631
[15]Samuel Labi Kumares C. Sinha. Effectiveness of highway pavement seal coating treatment. Journal of Transportation Engineering(ASCE),2004,130(1):14-23
[16]郑传超,王秉纲.道路结构力学计算[M].北京：人民交通出版社
[17]刘立新.沥青混合料粘弹性力学及材料学原理[M].北京：人民交通出版社,2006.20-60
[18]杜善义,王彪.复合材料细观力学[M].北京：科学出版社,1998.118-159
[19]郑少华,姜奉华.试验设计与数据处理[M].北京：中国建材工业出版社2004
[20]唐启义,冯明光.DPS数据处理系统[M].北京：科学出版社,2006
[21]顾震隆.短纤维复合材料力学[M].北京：国防工业出版社,1987.20-109
[22]胡福增.材料表面与界面[M].上海：华东理工大学出版社,2008.1-235
[23]中华人民共和国行业标准.公路工程质量检测评定标准(JTG F80/1—2004)[S].北京：人民交 通出版社,2004
[24]高国华.半刚性基层与沥青面层层间界面力学特性研究[D].重庆：重庆交通大学,2008
[25]沈金安.国外沥青路面设计方法汇总[M].北京：人民交通出版社,2004.25-150
[26]胡长顺,王秉纲.复合式路面设计原理与施工技术研究[M].北京：人民交通出版社,1999
[27]黄开宇.高速公路沥青路面结构层层间粘接状态的研究[J].公路工程,2010,35(2)：35-39
[28]汪水银.半刚性基层与沥青面层粘结性能影响因素[J].交通运输学报,2010,10(2)：12-19
[29]肖晶晶.微表处改性乳化沥青及混合料性能研究[D].西安：长安大学,2007
[30]虎增福.乳化沥青及稀浆封层技术[M].北京：人民交通出版社,2001.15-90
[31]朱大胜,顾伯勤,陈哗.纤维增强弹性体基复合材料单纤维拔出试验细观力学分析[J].工程力学,2009,26(5)：1-7
[32]J.M.霍奇金森.先进纤维增强复合材料性能测试[M].北京：化学工业出版社,2005.56-67
[33]杜隽.纤维封层应用技术研究[D].大连：大连理工大学,2009
[34]林梦.橡胶沥青应力吸收层路用性能研究[D].南京：南京航空航天大学,2008
[35]王善元等.纤维增强复合材料.中国纺织大学出版社,1998
[36]闫修海,于金成等.纤维封层技术的引进与应用[J].北方交通,2008.8：50-53
[37]中华人民共和国行业标准.沥青及沥青混合料试验规程(JTJ052-2000)[S].北京：人民交通出版社,2000
[2]陈晓娟.纤维沥青碎石封层适应性及阻裂效应研究[D].西安：长安大学,2010
[3]张金荣.长寿命沥青路面层间处治技术研究[D].西安：长安大学,2008
[4]郭寅川.重交通高等级公路沥青路面层间处治技术研究[D].西安：长安大学,2009
[5]中华人民共和国行业标准.公路沥青路面设计规范(JTGD50-2006)[S].北京：人民交通出版社,2006
[6]胡小弟,孙立军,刘兆金.沥青路面非均布荷载下层间接触条件不同时力学响应的三维有限元分析[J].公路交通科技,2003,Vol.20,No.3-1-4
[7]Douglas.D.Gransberg, P.E, Ellker. Karaea, Sanjaya. Senadheera. Caleulating roller requirements for chip seal Projects. Journal of Construetion Engineering and Management(ASCE),2004,130(3):378-384
[8]张宗辉.公路建设养护新技术—纤维封层[J].石油沥青,2008.22(3)：41-43
[9]北京埃盟泰机械设备有限公司.纤维封层设备施工手册.2007.06.09
[10]沈金安.高速公路沥青路面早期损坏分析与防治对策[M].北京：人民交通出版社,2004.30-100
[11]陈燎焱.山东省高速公路沥青路面典型结构研究[D].西安：长安大学,2008
[12]刘丽.沥青路面层间处治技术研究[D].西安：长安大学,2008
[13]Benedito de S. Bueno and Wander R. da Silva. Engineering Properties of Fiber Reinforced Cold Asphalt Mixes. Journal of Environmental Engineering(ASCE),2003,129(10):952-955
[14]冯德成,宋宇.沥青路面层间结合状态试验与评价方法研究[J].哈尔滨工业大学学报,2007,36(4)：627-631
[15]Samuel Labi Kumares C. Sinha. Effectiveness of highway pavement seal coating treatment. Journal of Transportation Engineering(ASCE),2004,130(1):14-23
[16]郑传超,王秉纲.道路结构力学计算[M].北京：人民交通出版社
[17]刘立新.沥青混合料粘弹性力学及材料学原理[M].北京：人民交通出版社,2006.20-60
[18]杜善义,王彪.复合材料细观力学[M].北京：科学出版社,1998.118-159
[19]郑少华,姜奉华.试验设计与数据处理[M].北京：中国建材工业出版社2004
[20]唐启义,冯明光.DPS数据处理系统[M].北京：科学出版社,2006
[21]顾震隆.短纤维复合材料力学[M].北京：国防工业出版社,1987.20-109
[22]胡福增.材料表面与界面[M].上海：华东理工大学出版社,2008.1-235
[23]中华人民共和国行业标准.公路工程质量检测评定标准(JTG F80/1—2004)[S].北京：人民交 通出版社,2004
[24]高国华.半刚性基层与沥青面层层间界面力学特性研究[D].重庆：重庆交通大学,2008
[25]沈金安.国外沥青路面设计方法汇总[M].北京：人民交通出版社,2004.25-150
[26]胡长顺,王秉纲.复合式路面设计原理与施工技术研究[M].北京：人民交通出版社,1999
[27]黄开宇.高速公路沥青路面结构层层间粘接状态的研究[J].公路工程,2010,35(2)：35-39
[28]汪水银.半刚性基层与沥青面层粘结性能影响因素[J].交通运输学报,2010,10(2)：12-19
[29]肖晶晶.微表处改性乳化沥青及混合料性能研究[D].西安：长安大学,2007
[30]虎增福.乳化沥青及稀浆封层技术[M].北京：人民交通出版社,2001.15-90
[31]朱大胜,顾伯勤,陈哗.纤维增强弹性体基复合材料单纤维拔出试验细观力学分析[J].工程力学,2009,26(5)：1-7
[32]J.M.霍奇金森.先进纤维增强复合材料性能测试[M].北京：化学工业出版社,2005.56-67
[33]杜隽.纤维封层应用技术研究[D].大连：大连理工大学,2009
[34]林梦.橡胶沥青应力吸收层路用性能研究[D].南京：南京航空航天大学,2008
[35]王善元等.纤维增强复合材料.中国纺织大学出版社,1998
[36]闫修海,于金成等.纤维封层技术的引进与应用[J].北方交通,2008.8：50-53
[37]中华人民共和国行业标准.沥青及沥青混合料试验规程(JTJ052-2000)[S].北京：人民交通出版社,2000