宽轨枕“中厚板”模型的结构分析、计算与配筋方案

DESIGN OF CONCRETE SLAB SLEEPER AS A THICK PLATE AND ITS REINFORCEMENT DISTRIBUTING

在传统的设计与计算中，为了简化问题便于工程应用，常选择“梁”、“薄板”作为宽轨枕的力学模型。作者根据宽轨枕的几何形状和载荷特点，提出取“中厚板”作为宽轨枕力学模型的设计思想，利用胡海昌的“中厚板”理论对宽轨枕进行结构分析与计算，并进一步给出了相应的配筋方案。结果表明，正在使用中的宽轨枕横向配筋欠缺。

In the traditional design and analysis, beam or thin plate is often chosen as the mechanical model for the concrete slab sleeper. That, in fact, is unreasonable in the practical problem. With considering its geometry size, its loading form and so on, a new and resonable model is put forward in this paper. That is so called Mindlin Plate. According to the H.C. Hu′s Theory on Mindlin Plate, the concrete slab sleeper is analyzed and calculated. Furthermore, its reinforcement distributing based on the computation is also given at the end of the present paper. The result shows that the lateral reinforcement is not enough for the concrete slab sleepers which are in use, and that is just the reason why there have observed longitudinal cracks on these sleepers.