Analysis of fluid-structure coupling effect of super long and large diameter heating pipeline in tunnel
In order to optimize the design of the heating piping system of Huadian Yinchuan heating project,a three-dimensional full-size fluid-structure coupling mechanical model is established to calculate the force,deformation and support reaction force of the extra-large diameter heating pipeline under different support spacing,and the change law of force and deformation in different parts of the pipeline is analyzed.The result show that the force and deformation at the inlet of the pipe are the largest,followed by the outlet,and the flat section is the smallest.However,the change of bearing spacing has a greater influence on the force and deformation of the straight section of the pipe,while the influence of the inlet end and outlet end is smaller.In addition,the change trend of bearing reaction force is basically consistent with the pipe force.The research results and construction experience of this paper can provide reference for the design and construction of similar heating pipes.
super long and large diameter heating pipelinefluid-structure interationsupport spacingforce characteristicsfinite element method
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