CAJ | 학술논문

为了优化常规三轴压缩试验与单轴贯入试验，介绍了局部三轴压缩试验原理、试验设计方法及过程等。基于与沥青路面实际受力情况相似的原则，通过ANASYS有限元论证了该方法的可行性。认为公称最大粒径及试件提供的围压是影响压头直径的主要影响因素，实际路面层厚与试件径高比是确定试件高度的主要因素，并设计了压头和试件的直径与高度。对AC13，SMA13和PA13三种级配沥青混合料进行局部三轴压缩试验，结果发现，该试验与常规三轴压缩试验的结果规律性一致。该试验具有应力状态明确，符合实际路面围压情况，所得参数的规律性、稳定性和准确性较好，且试验方法简单的优点。
위료우화상규삼축압축시험여단축관입시험，개소료국부삼축압축시험원리、시험설계방법급과정등。기우여력청로면실제수력정황상사적원칙，통과ANASYS유한원론증료해방법적가행성。인위공칭최대립경급시건제공적위압시영향압두직경적주요영향인소，실제로면층후여시건경고비시학정시건고도적주요인소，병설계료압두화시건적직경여고도。대AC13，SMA13화PA13삼충급배력청혼합료진행국부삼축압축시험，결과발현，해시험여상규삼축압축시험적결과규률성일치。해시험구유응력상태명학，부합실제로면위압정황，소득삼수적규률성、은정성화준학성교호，차시험방법간단적우점。
In order to optimize the conventional triaxial compression test and uniaxial penetration test, the principle, design method, and testing process of partial triaxial compression test ( PTCT) are introduced.This method is verified by using ANSYS finite element method based on the similar stress of asphalt pavement.The nominal maximum aggregate size and confining pressure provided by specimen are considered as key factors to determine the diameter of platens.The specimen's height is determined by the layer thickness of actual asphalt pavement and the diameter height ratio of speci-men.And the size of platens and the height and diameter of specimen are designed.Three types of asphalt mixtures, AC13, SMA13 and PA13, were tested by PTCT.The results show that the re-sponse of asphalt mixtures in PTCT fits in with that in the conventional triaxial compression test.The PTCT represents clear stress state characteristics of asphalt mixtures and accords with the actual con-fining pressure of asphalt pavement.The regularity, stability and accuracy of PTCT parameters are better than those of conventional triaxial test.Also, PTCT is easy to be carried out.