###### Abstract  
This article takes a single-tower cable-stayed bridge with a steel-UHPC composite deck steel box girder as the research object and develops different casting plans for the UHPC layer on the bridge deck. It analyzes the influence of factors such as the block casting sequence of the UHPC layer on the bridge deck, whether or not to set up a post-casting section, whether or not to set up bridge deck counterweights and the range of it on the additional deformation and stress of the formed UHPC bridge deck during the construction stage, exploring the impact of various factors on the structural target bridge's completion status (cable force, bridge completion linearity, bridge deck and steel box girder stress) under different pouring schemes. Research has shown that under the constant initial tension of stay cables, adjusting the pouring sequence of UHPC bridge decks and setting post-pouring sections is not significant in reducing the tensile stress of UHPC bridge decks. The more effective technical measure is to use bridge deck counterweight pouring during construction; the closer the counterweight is to the later stage constant load loading value, the more significant the decrease in UHPC tensile stress is. When factors such as on-site construction conditions, construction period, and labor costs are limited, local weight balancing on the bridge deck can be used.  
cable-stayed bridge; UHPC bridge deck casting; additional deformation; additional stress; target bridging status +
Footnote †: journal: Applied sciences  
internal force of the structure undergoes multiple redistributions during the construction process; this redistribution of internal forces will ultimately affect the implementation of the designed bridge state (cable force, bridge linearity, bridge deck and steel box girder stress) [8; 9; 10].  
There needs to be more research on the effects of the segmented casting of the UHPC layer on the stress and linear shape of large-span bridges.  
[PERSON] [8; 9] studied the influence of the pouring scheme on a finished suspension bridge when a UHPC deck was used. The research shows that the pouring sequence, the setting of a post-pouring section and deck counterweight significantly influenced the finished line shape and internal force of the suspension bridge. Using the no counterweight scheme or local counterweight pouring scheme is recommended. Due to the differences in construction methods and structural stress, the above research conclusions for suspension bridges do not apply to cable-stayed bridges.  
[PERSON] [10] studied the influence of the construction organization of the main beam roof pavement of a suspension bridge on the stress of the main beam and pavement and analyzed the influence of the structural parameters of steel box girders and asphalt concrete materials on the stress of the pavement. This study focuses on asphalt concrete pavement layers, and the research conclusion does not apply to UHPC pavement layers that participate in bridge deck structural stress.  
Other scholars have conducted many studies on the construction processes of cable-stayed bridges, such as cable tensioning and main beam erection, but have not addressed the impact of bridge deck pavement methods (especially of using UHPC involved in bridge deck stress) on the completion of cable-stayed bridges.  
Therefore, it is necessary to study the reasonable pouring scheme of the UHPC layer on the bridge deck of large-span cable-stayed bridges and conduct a multi-dimensional comparison and selection from the structural safety of the construction state to the advantages and disadvantages of the completed bridge state (internal force, and linear shape).