设置层间功能层的刚性基层水泥混凝土路面动态响应灰关联分析
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摘要
针对我国水泥混凝土路面设计与施工中很少关注在刚性基层和水泥混凝土面层之间设置功能层等相关问题,通过动态分析有限元方法,揭示了设置功能层的刚性基层水泥混凝土路面结构在车辆动态荷载作用下,各因素对力学响应的影响程度。并采用灰色关联分析,对各因素的影响程度进行了定量分析。结果表明:对路面结构力学响应的影响顺序依次为面层厚度>基层厚度>面层模量>功能层模量>基层模量>功能层厚度>地基模量>行车速度,最后通过回归分析得到了路面结构力学响应的计算公式。
In China,little attention was paid on the relate issues among the surface layer,base and function layer of cement concrete pavement.The influence of various factors on the mechanical response degree of rigid base cement concrete pavement structure with functional layer under dynamic vehicle load was revealed by dynamic analysis using finite element method,and the influence degree of various factors was quantitatively analyzed with grey correlation analysis.The result shows that the influencing order of mechanical response of pavement structure is surface layer thickness>rigid base thickness>surface layer modulus>function layer modulus>rigid base modulus>function layer thickness>foundation modulus>vehicle speed.Finally,the formulas of pavement structural mechanics response were obtained by regression analysis.
In China,little attention was paid on the relate issues among the surface layer,base and function layer of cement concrete pavement.The influence of various factors on the mechanical response degree of rigid base cement concrete pavement structure with functional layer under dynamic vehicle load was revealed by dynamic analysis using finite element method,and the influence degree of various factors was quantitatively analyzed with grey correlation analysis.The result shows that the influencing order of mechanical response of pavement structure is surface layer thickness>rigid base thickness>surface layer modulus>function layer modulus>rigid base modulus>function layer thickness>foundation modulus>vehicle speed.Finally,the formulas of pavement structural mechanics response were obtained by regression analysis.
引文
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[2]赵茂才.水泥混凝土路面板下脱空探查与岩土工程治理[D].哈尔滨:中国地震局工程力学研究所,2000.ZHAO Maocai.On Detection and Geotechnical Processingof Hollowing out under Cement Concrete Pavement Slab[D].Harbin:Institute of Engineering Mechanics ofChina Earthquake Administration,2000.
[3]范莹莹.水泥混凝土路面沥青功能层应力分析与结构设计指标研究[D].西安:长安大学,2009.FAN Yingying.The Stress Analysis and Structure DesignIndex Research of the Functional Layer of Asphalt underthe Concrete Pavement[D].Xi'an:Chang'an University,2009.
[4]DEMPSEY B J.Development and Performance ofInterlayer Stress-absorbing Composite in Asphalt ConcreteOverlays[J].Journal of the Transportation ResearchBoard,2002,1809:175-183.
[5]PULIPAKA A S.Quantifying the Relative Effects ofDesign and Site Factors on the Performance of RigidPavements Using SPS-2 LTPP Date[D].East Lansing:Michigan State University,2005.
[6]董开亮,覃峰.基于ANSYS的水泥混凝土路面层间作用分析[J].黑龙江交通科技,2007,30(1):18-21.DONG Kailiang,QIN Feng.Interfacial InteractionAnalysis of Cement Concrete Pavement Based on ANSYS[J].Communications Science and TechnologyHeilongjiang,2007,30(1):18-21.
[7]陈明祥.弹塑性力学[M].北京:科学出版社,2007.CHEN Mingxiang.Mechanics of Elastic and Plastic Solids[M].Beijing:Science Press,2007.
[8]杨斌,杨建领,陈拴发,等.旧水泥混凝土路面破裂板沥青加铺层设计方法研究[J].广西大学学报:自然科学版,2007,32(3):235-237.YANG Bin,YANG Jianling,CHEN Shuanfa,et al.Study of Design Method for Asphalt Overlay on CrackingSlab of Cement Concrete Pavement[J].Journal ofGuangxi University:Natural Science Edition,2007,32(3):235-237.
[9]王旭东.沥青路面材料动力特性与动态参数研究[D].南京:东南大学,1998:78-82.WANG Xudong.Study on the Dynamic Characteristics andDynamic Parameters of Asphalt Pavement Material[D].Nanjing:Southeast University,1998:78-82.
[10]张慧昕.沥青混合料室内外动态模量相关性研究[J].公路,2009(7):345-349.ZHANG Huixin.Study on Indoor and Outdoor AsphaltMixture Dynamic Modulus[J].Highway,2009(7):345-349.
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