The invention relates to a BIM (
Building Information Modeling)-based digital pre-
assembly method and
system for a glass
curtain wall, and relates to the technical field of
data processing, and the method comprises the following steps: determining geometric parameters and installation position parameters of each component; the method comprises the following steps: acquiring
point cloud data of a construction site through three-dimensional
laser scanning, performing multi-
source data registration on the
point cloud data, and calculating to obtain a
point cloud registration error; determining a
feature matching degree based on the point cloud registration error; obtaining a positioning optimization target according to a deviation analysis result and an
engineering constraint condition; according to the positioning optimization target, an
assembly precision evaluation value is obtained through calculation; based on the
assembly precision evaluation value, the correction value of the glass
curtain wall in the pre-assembly process is determined; and calculating a comprehensive
quality score based on the assembly precision evaluation value, the point cloud registration error, the
feature matching degree and the correction value, and determining to adopt a corresponding pre-assembly scheme when the comprehensive
quality score is greater than a preset threshold value. The pre-assembly accuracy of the glass
curtain wall can be improved.