高速铁路桩板结构承载板伸缩温度力研究

Research on Temperature Stress of Bearing Plate in Pile plank Structure for High speed Railway

中文关键词:高速铁路  桩板结构  地基处理  温度力  计算方法

英文关键词:high speed railway  pile plank structure  ground treatment  temperature stress  calculation method

中文摘要:

      以某高速铁路桩板结构路基工程为背景，研究了桩板结构路基单联跨数对承载板体伸缩温度应力的影响规律，提出了桩板结构的结构布置原则；并根据桩板结构路基具体结构特征，推导了计算结构整体升降温引起的承载板体伸缩温度应力计算公式，该解析式与空间有限元法计算结果较好吻合，可方便地计算承载板的伸缩温度应力。

英文摘要:

      The influence of the number of spans of the continuous pile plank structure on the stretch out and draw back temperature stress for bearing plate is analyzed based on a pile plank structure embankment project in high speed railway. The arrangement principle of the pile plank structure is put forward. The calculation formulas of the stretch out and draw back temperature stress for bearing plate are deduced according to the realistic structure characteristics of pile plank structure embankment. The calculated results of the analysis formula are in good accordance with those of spatial finite element method. The temperature stress of bearing plate can be easily calculated with the calculation formulas.