耦合和非耦合效應下瀝青路面受力對比分析研究
發(fā)布時間:2019-05-09 20:34
【摘要】:為了更加深入分析瀝青路面在溫度場和應力場耦合作用下的變化規(guī)律,本文采用修正的Burgers模型作為瀝青混合料的本構(gòu)模型,對雙輪標準軸載作用下高速公路瀝青路面的應力場和溫度場進行了有限元分析,并與非耦合狀態(tài)下瀝青路面受力情況進行對比研究。結(jié)果表明:溫度和應力耦合作用時,路面的主要設計指標路表豎向位移、底基層底面的水平應力、面層內(nèi)的剪應力和豎向應力均大于非耦合作用,該研究可以為瀝青路面的力學分析及路用性能研究提供有利依據(jù)。
[Abstract]:In order to analyze the variation law of asphalt pavement under the coupling action of temperature field and stress field, the modified Burgers model is adopted as the constitutive model of asphalt mixture. The stress field and temperature field of highway asphalt pavement under the action of double wheel standard axial load are analyzed by finite element method and compared with the stress condition of asphalt pavement under the condition of uncoupling. The results show that when temperature and stress are coupled, the vertical displacement of pavement surface, the horizontal stress of the subbase, the shear stress and the vertical stress of the surface layer are all greater than those of the non-coupling action. This study can provide a favorable basis for the mechanical analysis and pavement performance research of asphalt pavement.
【作者單位】: 遼寧工程技術大學土木與交通學院;
【基金】:遼寧省教育廳科研基金項目(L 2013144) 遼寧省百千萬人才基金(2011921064)
【分類號】:U416.217
[Abstract]:In order to analyze the variation law of asphalt pavement under the coupling action of temperature field and stress field, the modified Burgers model is adopted as the constitutive model of asphalt mixture. The stress field and temperature field of highway asphalt pavement under the action of double wheel standard axial load are analyzed by finite element method and compared with the stress condition of asphalt pavement under the condition of uncoupling. The results show that when temperature and stress are coupled, the vertical displacement of pavement surface, the horizontal stress of the subbase, the shear stress and the vertical stress of the surface layer are all greater than those of the non-coupling action. This study can provide a favorable basis for the mechanical analysis and pavement performance research of asphalt pavement.
【作者單位】: 遼寧工程技術大學土木與交通學院;
【基金】:遼寧省教育廳科研基金項目(L 2013144) 遼寧省百千萬人才基金(2011921064)
【分類號】:U416.217
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