面层接触对沥青结构力的影响.doc

武暋汉暋理暋工暋大暋学暋学暋报 第33卷暋第12期 Vol.33暋No.12 2011年12月 JOURNALOF WUHANUNIVERSITYOFTECHNOLOGY 暋Dec.2011 棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁棁 DOI:10.3963/j.issn.1671灢4431.2011.12.009 面层层间接触对沥青路面设计参数的影响 杨暋博1,张争奇1,栗培龙1,张慧鲜2 (1.长安大学特殊地区公路工程教育部重点实验室,西安 710064; 河南省交通规划勘察设计院有限责任公司,郑州 450052) 摘暋要:暋针对沥青面层层间污染导致面层层间粘结不良的问题,采用壳牌路面设计软件BISAR3.0,选择市政道路典型 的两层式半刚性基层沥青路面结构,根据弹簧柔量接触模型,对比分析基、面层层间接触条件和面层层间接触条件对沥 青路表弯沉和层底拉应力的影响,进而确定面层层间接触条件对半刚性基层沥青路面设计的重要性。结果表明,面层层 间接触条件对路表弯沉和沥青层层底拉应力影响较小,对半刚性基层层底拉应力影响较大,在路面结构设计时有必要验 算层间不连续状态下的半刚性基层层底拉应力,并采取有效措施保证面层层间粘结。 关键词:暋层间接触;暋沥青路面;暋路表弯沉;暋层底拉应力;暋BISAR 中图分类号:暋U414 文献标识码:暋A 文章编号:1671灢4431(2011)12灢0037灢04 InfluenceofBondingConditionsBetweenAsphaltLayerson AsphaltPavementDesignParameters 1,ZHANGZheng灢qi1,LIPei灢long1,ZHANGHui灢xian 2 YANGBo (1.KeyLaboratoryforSpecialAreaHighwayEngineeringofMinistryofEducation,Chang暞anUniversity, Xi暞an710064,China;2.HenanProvincialCommunicationsPlanningSurvey DesignInstituteCoLtd, Zhengzhou450052,China) Abstract:暋Aimingatthepoorbondingconditionbetweenasphaltsurfacelayerscausedbyinterfacialpollution,the SHELLpavementdesignsoftwareBISAR3.0wasselectedtoanalyzethetypicaltwo灢layersemi灢rigidasphaltpavement usedinmunicipalroad.Accordingtothespringcompliancecontactmodel,influencesofbase灢surfaceandsurface灢surface interfacialbondingconditionsonsurfacedeflectionandlayerbottomtensionstressofsemi灢rigidasphaltpavementwere compared,andthen,theimportanceofinterfacialbondingconditionbetweenasphaltsurfacelayerswasdetermined.Ac灢 cordingtocalculatedresults,comparedwithsurfacedeflectionandasphaltlayerbottomtensionstress,theinfluenceof interfacialbondingconditionbetweenasphaltsurfacelayersonsemi灢rigidbaselayerbottomtensionstresswasgreater, therefore,itisnecessarytocheckthesemi灢rigidbaselayerbottomtensionstressinthediscontinuousconditionbetween asphaltsurfacelayerandtakeeffectivemeasurestoensurethebondingconditionbetweenasphaltsurfacelayer. Keywords:暋interfacialbondingcondition;暋asphaltpavement;暋surfacedeflection;暋layerbottomtensionstress