Management of construction cost of large-span steel structure project based on variable-two-dimensional cloud model

In order to improve the management and control ability for the large-span steel structure project, an evaluation model for the management of construction cost in the large-span steel structure project based on the variable-two-dimensional cloud model was proposed. First, the main factors affecting the management of construction cost were analyzed from the perspective of physical improvement, practical optimization and human coordination with the WSR methodology, to construct the evaluation index system for the management of construction cost in the large-span steel structure project. Then, the vector included angle cosine method and variable weight theory were adopted to assign weights for each evaluation index, and the economy and effectiveness of large-span steel structure project were comprehensively evaluated with the two-dimensional cloud model. Finally, taking a theater as the research object, the level of the management of construction cost was determined to be good through MATLAB software drawing comprehensive two-dimensional cloud map, and the proximity was calculated to further determine the evaluation results, which verified the effectiveness and applicability of the model, providing the theoretical basis for subsequent management of construction cost in the largespan steel structure project.