CAJ | 학술논문

分析落锤式弯沉仪的弯沉数据得到的路面层模量与实测的沥青层芯样劲度模量,然后利用理论的模型计算路面响应,比较测量和理论计算的值.采用多层弹性理论反算模量.正算时采用了三种不同的理论模型,三种模型分别为多层弹性理论;当量厚度的线弹性方法及考虑沥青层粘弹性的有限元方法.结果表明,利用有限元方法计算的结构响应更加接近实际测量结果.
분석락추식만침의적만침수거득도적로면층모량여실측적력청층심양경도모량,연후이용이론적모형계산로면향응,비교측량화이론계산적치.채용다층탄성이론반산모량.정산시채용료삼충불동적이론모형,삼충모형분별위다층탄성이론;당량후도적선탄성방법급고필력청층점탄성적유한원방법.결과표명,이용유한원방법계산적결구향응경가접근실제측량결과.
Analysis of the pavement layer moduli is determined from a back-calculation of falling weight deflectometer (FWD) data and the measured stiffness moduli of asphalt layer cores, then the pavement response is calculated using a theoretical model, measured response compared to theoretical values. Layered elastic theory was used to firstly back-calculate the layer moduli and then three different models were used to forward calculate the strain and deflection. The models were layered elastic theory (LET), the method of equivalent thicknesses (MET) with linear elastic and the finite element method (FEM) where asphalt layer may be viscoelastic. The results showed that the calculation structure response from FEM is most consistent with measured results.