English：

The complex twisted surface shell structure of Yunmen at Hangzhou West Railway Stationfeatures an overall irregular free-form surface,where the axes of certain members are spatial curves withcross-sections twisting along the axis. This geometric complexity results in a complicated mechanicalsystem, posing significant challenges for construction. As a large-scale structure, a stepwise constructionscheme is adopted, the mechanical state at each step is closely related to the previous state and influencesthe installation positioning of subsequent steps. To propose a rational construction sequence and ensurestrict error control, a refined finite element model was established. A simulation of the constructionprocess was conducted using the element birth and death technique to obtain internal force anddeformation responses,validating the rationality of the proposed scheme. Furthermore, considering thatthe structure might deviate from the design position due to self-weight deformation, a deformation pre-adjustment analysis was performed using the forward iteration method. The deformation pre-adjustmentvalues for the structural members were determined to ensure the final configuration is consistent with thedesign configuration.