Research on Carbon Emissions Based on Full Lifecycle and BIM Technology for Buildings

This paper focuses on quantifying overall lifecycle carbon emissions of a case-study structure, identifying key emission stages, and proposing carbon reduction strategies. The lifecycle assessment (LCA) framework combined with BIM technology was used to calculate stage-wise carbon outputs across the materials, assembly, occupancy, and decommissioning phases. The research proposes strategies such as optimizing the localized supply of materials, promoting recyclable building materials, improving building thermodynamic performance, and using clean power applications. The results offer empirical references for lifecycle carbon mitigation across the built environment and critical guidance to accelerate a sectoral low-carbon transition toward carbon peaking and carbon neutrality.