佳木斯大学学报（自然科学版）
佳木斯大學學報（自然科學版）
가목사대학학보（자연과학판）
JOURNAL OF JIAMUSI UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
5期
715-719
,共5页
沥青路面%有限元%反射裂缝%应力
瀝青路麵%有限元%反射裂縫%應力
력청로면%유한원%반사렬봉%응력
asphalt pavement%finite element method%reflective crack%stress
为了研究反射裂缝对沥青路面力学状态的影响，应用有限元软件ABAQUS建立了含反射裂缝和不含裂缝的路面模型，分析了裂缝出现前后在选取点的应力S11与剪应力S12的变化情况．计算表明：反射裂缝的出现对下面层底部应力S11、剪应力S12产生的影响最大，应力S11增大幅度达到82．96％，剪应力S12由几乎为零增大到43．94kPa；裂缝的出现对路面表面与上面层底部的剪应力S12影响较大，增大幅度分别为46．7％和37％；裂缝的出现对中面层、上基层和下基层底部的应力S11、剪应力S12以及路面表面和上面层底部的应力S11几乎没有影响．
為瞭研究反射裂縫對瀝青路麵力學狀態的影響，應用有限元軟件ABAQUS建立瞭含反射裂縫和不含裂縫的路麵模型，分析瞭裂縫齣現前後在選取點的應力S11與剪應力S12的變化情況．計算錶明：反射裂縫的齣現對下麵層底部應力S11、剪應力S12產生的影響最大，應力S11增大幅度達到82．96％，剪應力S12由幾乎為零增大到43．94kPa；裂縫的齣現對路麵錶麵與上麵層底部的剪應力S12影響較大，增大幅度分彆為46．7％和37％；裂縫的齣現對中麵層、上基層和下基層底部的應力S11、剪應力S12以及路麵錶麵和上麵層底部的應力S11幾乎沒有影響．
위료연구반사렬봉대력청로면역학상태적영향，응용유한원연건ABAQUS건립료함반사렬봉화불함렬봉적로면모형，분석료렬봉출현전후재선취점적응력S11여전응력S12적변화정황．계산표명：반사렬봉적출현대하면층저부응력S11、전응력S12산생적영향최대，응력S11증대폭도체도82．96％，전응력S12유궤호위령증대도43．94kPa；렬봉적출현대로면표면여상면층저부적전응력S12영향교대，증대폭도분별위46．7％화37％；렬봉적출현대중면층、상기층화하기층저부적응력S11、전응력S12이급로면표면화상면층저부적응력S11궤호몰유영향．
In order to research the influence of reflective crack on the mechanical state for asphalt pave-ment, the finite soft software ABAQUS was used to establish pavement model with reflective crack and without crack, and the changes for stress S 11 and shear stress S 12 of the selected point before and after the cracks ap-peared were analyzed .Calculations show that the emergence of reflective crack has the greatest effect on the stress S11 and the shear stress S12 at the bottom of the lower surface layer , the stress S11 increased by 82.96%, the shear stress S12 increased from almost 0 to 43.94kPa; the appearance of cracks has greater effect on the shear stress S12 of the road surface and the upper surface layer , the rate of increase was 46.7%and 37%;the appearance of cracks has little impact on the stress S 11 and shear stress S 12 at the bottom of middle surface lay-er, upper base and lower base , as well as the stress S11 for road surface and the upper surface layer .
