When the actual load of hangers on the power pipe in service deviates from the design load

some pipelines have abnormal large displacement as the load transfer occurs. To solve this problem

finite element analysis software was applied to calculate the cold and hot displacements of the pipeline with different layout schemes under conditions with the same wall thickness deviation and performance of hangers. The results show that

the abnormal large displacement of the pipeline is related to the pipe layout

and the pipelines with small vertical stiffness cause abnormal large displacement easily. Several solutions are put forward to solve this problem

such as optimizing and improving the pipe layout

purchasing the pipe with small wall thickness deviation and selecting the constant force hangers with small constant degree and good quality. The research provides reference for solving the same problems.