直埋供热管道竖向转角段设计问题的探讨

On Design of Directly Buried Heat Supply Vertical Bend Pipe

对直埋供热管道不等臂竖向转角管段热胀弯矩以平均臂长采用等臂模型计算的误差 ;

This paper deals with some problems,which are error on simplified calculation of heat expansion moment based on its average leg length for bend pipe with not equal length legs by using calculation model for bend pipe with equal length legs and maximum bend angle for bend pipe, which may be regarded as straight pipe so that it is not necessary to check its strength, about design of directly buried heat-supply vertical bend pipe with center of curvature under it. Results given is useful for engineering design.