摘要
本文运用Williams级数和平面应变有限元方法，研究路面等层状结构中垂直界面裂缝尖端应力场的奇异性和裂缝的扩展方向。结果表明，奇异性指数与材料参数的差异性、界面结合条件和加载方式有关。摩擦接触界面和土工织物等措施可能导致形成沿界面的滑移裂缝，从而阻止裂缝继续向前扩展。
Using the method of Williams series and FEM, this paper studies the singularitical exponent of the stress fields around the vertical interfacial crack tip in layered-system such as pavement and the direction of crack propagation. The results show that the singularitical exponent is concerned with the difference of materials' parameters, combination on the interface and loading condition. Sliding crack may be produced due to the frictions interface or geotextile. So drop down the possibility that crack propagates forwards.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
1997年第2期5-10,共6页
China Journal of Highway and Transport
基金
国家自然科学基金
关键词
公路
结构层组合
路面
裂缝
扩展
Layered-system, Cracks, Interfaces, Singularities, Geogrids
