摘要
裂缝尖端应力强度因子是判断裂缝开裂扩展的重要指标,应用商业通用有限元软件ABAQUS,建立了8结点等参单元的有限元模型,采用奇异等参元及断裂力学理论,对隧道内水泥混凝土找平层的裂缝问题进行了数值分析,结果能真实反映隧道内路面结构裂缝的发展现象和规律,为高速公路隧道工程设计提供依据。
The stress intensity factor （SIF） at the crack tip is an important index to judge the crack to grow or not. A finite element analysis model of 8-node isoparametric elements is established by the commerce FEM software ABAQUS, and the crack on the concrete lever layer in highway tunnel is numerically analyzed with the singularity isoparametric elements and fracture mechanics theory. The developing phenomenon and law on the pavement structure in the roadway tunnel can be truly imaged from the results and be provided to the highway tunnel pavement design.
出处
《黑龙江工程学院学报》
CAS
2005年第3期21-24,28,共5页
Journal of Heilongjiang Institute of Technology
关键词
裂缝
有限元
断裂力学
数值分析
隧道
crack
finite element
fracture mechanics
numerical analysis
tunnel
