CAJ | 학술논문

借助 ABAQUS有限元平台，分析水泥稳定碎石基层沥青路面与粒料基层沥青路面，Top-Down裂缝尖端应力强度因子KI 随路面结构参数、轴载及裂缝深度变化规律。结果表明，增加沥青层厚度与模量、基层厚度与模量、土基模量对沥青路面结构抑制 Top-Down裂缝有益，而超载将对路面Top-Down裂缝产生严重不利影响；水泥稳定碎石基层沥青路面抗 Top-Down裂缝能力大于粒料基层沥青路面。
차조 ABAQUS유한원평태，분석수니은정쇄석기층력청로면여립료기층력청로면，Top-Down렬봉첨단응력강도인자KI 수로면결구삼수、축재급렬봉심도변화규률。결과표명，증가력청층후도여모량、기층후도여모량、토기모량대력청로면결구억제 Top-Down렬봉유익，이초재장대로면Top-Down렬봉산생엄중불리영향；수니은정쇄석기층력청로면항 Top-Down렬봉능력대우립료기층력청로면。
Based on finite element program ABAQUS,the Top-Down crack tip stress intensity factor KII was analyzed with different pavement structure parameters,axle loading and crack depth when the pavements were the asphalt pavement with cement treated granular base and the asphalt pavement with granular base.It was found that,with the increase of asphalt layer thickness and modulus,the base thickness and its modulus and the subgrade modulus,the Top-Down crack tip stress intensity factor decreased.Overload of the vehicle axles made negative effects on Top-Down crack.Through comparison,it was found that,the asphalt pavement with cement treated granular base has more anti-crack ability than the asphalt pavement with granular material base.