Research on Construction Duration Optimization of High-Rise Residential Buildings Based on an Integrated Platform

The integrated platform provides a safe operating environment for high-rise residential construction and enables the simultaneous advancement of main structural works and facade operations. However, the construction workflow based on an integrated platform is highly complex, with tightly interlinked processes, making construction duration optimization an urgent issue. Focusing on the construction characteristics of the integrated platform for facade operations and the coordinated execution of structural and facade works, this study investigates the problem of construction duration optimization. With the objective of minimizing the overall construction period, the logical relationships among various processes are systematically sorted out, and a mathematical optimization model is established that considers precedence constraints, overlapping relationships, and labor resource conditions. By introducing a genetic algorithm, the optimal construction scheme under the shortest possible duration is obtained. An empirical analysis based on an actual engineering project demonstrates that the construction cycle of a standard floor was shortened from the original 6 days to 5 days, effectively reducing technical interruptions on site and lowering labor resource demand by 10–15%. This improvement enhances lean construction performance at the project level. The research results provide theoretical support and methodological reference for construction duration optimization using integrated construction equipment and hold significant engineering value and practical significance for promoting the digitalization, systematization, and efficiency of building construction.