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前言 大口径埋地弯头温度升高以后所引起的内力和位移,文[1]用有限元法计算了φ1020各种不同弯头的位移、内力和应力,文[2]用材料力学方法在假设弯头为弹性抗弯铰的前提下计算了φ720弯头的位移及内力。本文对这两种方法计算结果的差异进行分析,进而说明这两种计算方法的合理性。同时,进一步分析影响弯头位移、内力和应力的各主要因素,供管道设计部门参致。
Preface The large-diameter buried elbow temperature caused by the rise after the internal force and displacement, text [1] calculated by finite element method φ1020 various elbow displacement, internal forces and stress, text [2] using mechanical methods in Suppose the elbow flexural hinge flexible under the premise of the calculated φ720 elbow displacement and internal force. In this paper, the differences between the calculated results of the two methods are analyzed, and then the rationality of the two methods is proved. At the same time, further analysis of the elbow displacement, internal forces and stress of the major factors for the pipeline design department.