柔性路面粒料基层抗剪性能分析
|
摘要
柔性路面粒料基层剪切破坏是主要破坏形式,但目前对其抗剪性能没有做过理论分析.根据散体力学粒料最危险剪切滑移面不是剪应力最大的面,而是剪应力与正应力比值最大的面为理论依据提出剪应力验算公式;基于弹性层状体系理论确定了最危险剪切面位置;做出了不同路面结构最危险剪切面上的剪应力及正应力诺谟图.最后通过一柔性路面粒料基层抗剪性能验算例子,发现柔性路面粒料基层会出现剪切破坏,提出验算的必要性.
The shear strength of granule base is inferior in flexible pavement.However there is no theoretical analysis for it.Based on the mechanics of granular mixtures,the slip-shear surface is not considered the biggest of the sheer stress,the ratio of the shear stress and the normal stress is the biggest,so the formula of shear strength checking are proposed.The position of hazard slip-shear is proposed according to multi-layer elastic theory and nomograph of the shear stress and normal stress are drawn for different flexible pavement of the hazardous slip-shear surface.At last,an example of shear strength checking of granule based is presented for checking the shear strength.
The shear strength of granule base is inferior in flexible pavement.However there is no theoretical analysis for it.Based on the mechanics of granular mixtures,the slip-shear surface is not considered the biggest of the sheer stress,the ratio of the shear stress and the normal stress is the biggest,so the formula of shear strength checking are proposed.The position of hazard slip-shear is proposed according to multi-layer elastic theory and nomograph of the shear stress and normal stress are drawn for different flexible pavement of the hazardous slip-shear surface.At last,an example of shear strength checking of granule based is presented for checking the shear strength.
引文
[1]杨斌,陈拴发.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):37-40.YANG Bin,CHEN Shuan-fa.Anti-cracking Mechanisms of Graded Crushed Stone Cracking Relief Layer and theFull-scale Fatigue Experi ments[J].Journal of Highway and Transportation Research and Development,2006(23):37-40.
[2]胡珊,任瑞波.具有柔性过渡层的沥青混凝土路面半刚性基层顶部温度状况的理论模拟[J].公路,2003(12):62-65.HU Shan,REN Rui-bo.Theoretical Si mulation of Semi-Rigid Base Top Temperature on Asphalt Concrete Pave-ment with Flexible Transition Base[J].Highway,2003(12):62-65.
[3]何兆益,黄飞.碎石基层防止沥青路面反射裂缝结构的应用研究[J].华东公路,1997(104):51-54.HE Zhao-yi,HUANG Fei.Resarch and application of granular base prevent reflective cracks in Asphalt Parementstructure[J].East China Highway,1997(104):51-54.
[4]韩森,徐鸥明.风化石粒料基层材料抗剪强度变化规律研究[J].公路,2004(10):143-147.HAN Sen,XU Ou-ming.A Study on Change Laws of Shear Strength of Weathered Stone Gravel Base Materials[J].Highway,2004(10):143-147.
[5]克列因I K.散粒体结构力学[M].陈万佳,译.北京:中国铁道出版社,1983.KREINГК.Structural mechanics of granular mixtures[M].CHEN Wan-jia,Translated.Beijing:China Rail wayPress,1983.
[6]赵彭年.松散介质力学[M].北京:地震出版社,1995.ZHAO Peng-nian.Mechanics of media[M].Beijing:China Seismic Press,1995.
[7]黄松元.散体力学[M].北京:机械工业出版社,1993.HUANG Song-yuan.Granular particles mechanics[M].Beijing:China Machine Press,1993.
[8]徐芝纶.弹性力学(上册)[M].北京:高等教育出版社,2000.XU Zhi-lun.Elastic Mechanics(Vol.1)[M].Beijing:Higher Education Press,2000.
[9]林绣贤.柔性路面结构设计方法[M].北京:人民交通出版社,1988.LIN Xiu-Xian.Flexible Pavement structure design method[M].Beijing:China Communications Press,1988.
[10]贾亮.低交通量公路柔性路面粒料基层抗剪性能研究[D].西安:长安大学.2008.JIA Liang.Flexible Pavement above the Granule base Shear Behavior Research in Low-volume Highway[D].Xi′an:Chang′an University,2008.
[2]胡珊,任瑞波.具有柔性过渡层的沥青混凝土路面半刚性基层顶部温度状况的理论模拟[J].公路,2003(12):62-65.HU Shan,REN Rui-bo.Theoretical Si mulation of Semi-Rigid Base Top Temperature on Asphalt Concrete Pave-ment with Flexible Transition Base[J].Highway,2003(12):62-65.
[3]何兆益,黄飞.碎石基层防止沥青路面反射裂缝结构的应用研究[J].华东公路,1997(104):51-54.HE Zhao-yi,HUANG Fei.Resarch and application of granular base prevent reflective cracks in Asphalt Parementstructure[J].East China Highway,1997(104):51-54.
[4]韩森,徐鸥明.风化石粒料基层材料抗剪强度变化规律研究[J].公路,2004(10):143-147.HAN Sen,XU Ou-ming.A Study on Change Laws of Shear Strength of Weathered Stone Gravel Base Materials[J].Highway,2004(10):143-147.
[5]克列因I K.散粒体结构力学[M].陈万佳,译.北京:中国铁道出版社,1983.KREINГК.Structural mechanics of granular mixtures[M].CHEN Wan-jia,Translated.Beijing:China Rail wayPress,1983.
[6]赵彭年.松散介质力学[M].北京:地震出版社,1995.ZHAO Peng-nian.Mechanics of media[M].Beijing:China Seismic Press,1995.
[7]黄松元.散体力学[M].北京:机械工业出版社,1993.HUANG Song-yuan.Granular particles mechanics[M].Beijing:China Machine Press,1993.
[8]徐芝纶.弹性力学(上册)[M].北京:高等教育出版社,2000.XU Zhi-lun.Elastic Mechanics(Vol.1)[M].Beijing:Higher Education Press,2000.
[9]林绣贤.柔性路面结构设计方法[M].北京:人民交通出版社,1988.LIN Xiu-Xian.Flexible Pavement structure design method[M].Beijing:China Communications Press,1988.
[10]贾亮.低交通量公路柔性路面粒料基层抗剪性能研究[D].西安:长安大学.2008.JIA Liang.Flexible Pavement above the Granule base Shear Behavior Research in Low-volume Highway[D].Xi′an:Chang′an University,2008.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心