摘要
运用损伤力学的基本原理探讨了水泥混凝土路面的开裂机理和破坏过程,在此基础上分析出了车辆荷载反复作用下路面的累积损伤加剧,断裂韧度降低。随着裂缝深度的逐渐增加,荷载在裂缝尖端造成的应力强度因子也越来越大,最终达到水泥混凝土路面失稳时的开裂韧度,路面板随即发生断裂破坏。
The crack principle and destruction process are researched by applying the principium of breakage mechanics. The breakage cumulation of portland cement concrete pavement slabs is increased and the rupture temper is decreased under the vehicle load reiterative action of reiterative. With the gradual increase of crack depth, the gene of stress strength caused by the load on the top of the crack will become larger and larger. The pavements slab will rupture when the crack temper makes the portland cement concrete pavements unsteady.
出处
《重庆交通大学学报（自然科学版）》
CAS
2008年第3期405-407,共3页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
水泥混凝土
路面
开裂机理
断裂韧度
portland cement concrete
pavement slabs
crack mechanism
rupture temper
