摘要
分析了水泥混凝土路面路面板翘曲变形处理为2组垂直交叉地基梁翘曲变形叠合的威氏方法的适用性和精度,总结了半无限地基和半刚性基层上路面板的温度翘曲应力变化规律,通过引入等效梁长和当量相对梁长2个概念,提出了半无限地基板任一点、计入半刚性基层超宽影响的梁中点的翘曲应力公式。
The applicability and accuracy of Westergaard formula, which based upon the assumption that the curling deformation of cement concrete pavement slabs can be regarded as the superposition of the deformations of two foundation beams interperpendicular to each other respectively, are analyzed, and the rules of thermal warping stresses in pavement slabs on half infinite space foundation or semi rigid base foundation are summarized. By adopting two concepts of equivalent length and equivalent relative length of beam, the calculating formulas are provided of thermal warping stresses on any point in the pavement slabs on half infinite space foundation and also in the middle of foundation beam concerning the effect of ultra wide base
出处
《公路》
北大核心
2004年第11期63-67,共5页
Highway
关键词
水泥混凝土路面
温度翘曲应力
路面板翘曲
文克勒地基
半刚性基层
cement concrete pavement
thermal curling deformation
Winkler foundation
half infinite space foundation
semi rigid base foundation
