[1]乐金朝,丁武洋,谢丽..路面结构裂缝应力强度因子数值计算[J].郑州大学学报(工学版),2002,23(02):41-43,50.[doi:10.3969/j.issn.1671-6833.2002.02.012]
　Lejin Dynasty,DING Wuyang,Xie Li.Numerical calculation of stress intensity factor of pavement structure cracks[J].Journal of Zhengzhou University (Engineering Science),2002,23(02):41-43,50.[doi:10.3969/j.issn.1671-6833.2002.02.012]

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路面结构裂缝应力强度因子数值计算()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

23卷

期数:

2002年02期

页码:

41-43,50

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Numerical calculation of stress intensity factor of pavement structure cracks

作者:

乐金朝; 丁武洋; 谢丽.

郑州大学环境与水利学院,河南,郑州,450002, 郑州大学环境与水利学院,河南,郑州,450002, 郑州大学环境与水利学院,河南,郑州,450002

Author(s):

Lejin Dynasty; DING Wuyang; Xie Li

关键词:

奇异等参元;  断裂力学;  应力强度因子;  路面

Keywords:

singular and isoparameters;  fracture mechanics;  stress intensity factor;  Pavement

DOI:

10.3969/j.issn.1671-6833.2002.02.012

文献标志码:

A

摘要:

路面裂缝尖端应力强度因子是判断裂缝开裂扩展的重要指标.应用奇异等参元及断裂力学理论,对3种荷载简化模式下路面单裂缝问题进行了数值分析.在裂缝尖端附近采用最小二乘法回归得到了相应的裂缝尖端应力强度因子,同时应用有限宽板条模型进行了数值验算.计算结果表明,裂缝长度与基层模量对裂缝尖端应力强度因子影响较大,凸形荷载作用下裂缝更易扩展.

Abstract:

The stress strength factor of pavement crack tip is an important index to judge the crack propagation of crack. Using singular isoparameters and fracture mechanics theory, the single crack problem of pavement under three load simplification modes was numerically analyzed. The corresponding stress intensity factor of the crack tip was obtained by least squares regression near the crack tip, and the finite-width slats model was applied to perform numerical verification. The calculation results show that the fracture length and base modulus have a great influence on the stress strength factor of the crack tip, and the crack is easier to propagate under convex loading.

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