CAJ | 학술논문

根据CRTSI型板式无砟轨道的结构特征与受力特征，将钢轨假设为点支撑梁，扣件和基础的弹性假设为弹簧，轨道板、CA砂浆和底座板分别假设为实体，建立CRTSI型板式无砟轨道的有限元模型，以Palmgren-Miner线性疲劳累计损伤准则为基础，采用全寿命分析方法对CA砂浆在不同列车荷载作用下的疲劳寿命进行分析，得到CA砂浆层的疲劳寿命分布和危险点的寿命值。
근거CRTSI형판식무사궤도적결구특정여수력특정，장강궤가설위점지탱량，구건화기출적탄성가설위탄황，궤도판、CA사장화저좌판분별가설위실체，건립CRTSI형판식무사궤도적유한원모형，이Palmgren-Miner선성피로루계손상준칙위기출，채용전수명분석방법대CA사장재불동열차하재작용하적피로수명진행분석，득도CA사장층적피로수명분포화위험점적수명치。
According to the structural and mechanical characteristics of CRTS-I slab ballastless track, the rail was assumed to be a beam discretely supported at points, the fastener and foundation's elasticity was assumed as springs, the track slab, CA mortar and base slab were respectively assumed as solid object. Then the finite element model of CRTS-I track slab was established. On the basis of Palmgren-Miner linear cumulative fatigue damage criterion, the life-cycle analysis method was utilized to analyze the fatigue lives of CA mortar under different train loads. Eventually, the CA mortar layer's fatigue life distribution and fatigue life values at dangerous points were acquired.