客运专线非埋式路基桩板结构温度应力计算方法

摘要

According to the characteristics of non-embedded pile-slab structure on passenger dedicated railway,the calculating formula of stretch out and draw back temperature stress for bearing plate caused by the whole up-and-down temperature was deduced with the basic principle of the force method. T he temperature stress of pile-slab structure was calculated. T he analytical solution and the numerical solution were compared and analyzed. T he results show that the analytical formula of the axial force of the bearing plate is sufficiently accurate,the analytical solution is larger than the numerical solution. T he formula can be used in the calculation of temperature stress of the bearing plate of the non-embedded continuous pile-slab structure.%针对客运专线非埋式路基桩板结构形式，根据桩板结构路基具体特性，运用力法基本原理推导了结构整体升、降温引起的承载板伸缩温度应力表达式。应用推导的公式计算该桩板结构温度力，并将解析解与数值解作了比较分析。结果表明承载板轴力解析式具有足够的计算精度，且解析解大于数值解，可用于非埋式路基连续桩板结构承载板温度应力计算。