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Research on the Carbon Emissions and Costs Between Prefabricated and Traditional Cast In Situ Buildings Based on BIM

BIMに基づくプレハブ建築と従来の現場打ち建築の炭素排出量とコストに関する研究 (AI 翻訳)

Yujin Yang, Xinyu Yang, Yingjie Shi, Basaula Pululu Jordan, Shanzhi Wang, Xuan Cao, Daren Zhang

Sustainability📚 査読済 / ジャーナル2026-06-16#炭素会計Origin: CN経営インパクト: コスト削減対象セクター: construction
DOI: 10.3390/su18126174
原典: https://doi.org/10.3390/su18126174

🤖 gxceed AI 要約

日本語

BIMと炭素排出係数法を統合し、プレハブ建築と従来工法の建設段階における体化炭素排出量とコストを比較。8階建て住宅を対象に、材料生産段階が主要な排出源であること、電力排出係数が結果に大きく影響することを示した。低炭素建築評価の移転可能な方法論を提供。

English

This study integrates BIM with carbon emission factor methods to compare embodied carbon emissions and costs between prefabricated and traditional cast-in-situ buildings during the materialization stage. Using an eight-story residential case, it finds prefabricated construction has lower embodied carbon and better economic performance, with material production as the dominant emission source and electricity factors most influential. The framework offers a transferable methodology for low-carbon building assessment.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本の建設業界では、カーボンニュートラル達成に向けて建築物のライフサイクル炭素評価が重要視されており、本研究成果はプレハブ工法の環境優位性を定量的に示すことで、今後の建築設計や調達判断に示唆を与える。また、BIMを活用した炭素評価手法は、今後の建築物省エネ法やGX関連制度への対応にも応用可能。

In the global GX context

Globally, the study contributes to the growing body of literature on embodied carbon in buildings, which is critical for meeting net-zero targets. It provides a replicable BIM-based framework that can support decision-making in sustainable construction, aligning with international efforts to standardize carbon accounting in the built environment, such as those under the EU's Level(s) framework and the Carbon Risk Real Estate Monitor.

👥 読者別の含意

🔬研究者:Provides a transferable BIM-based framework for embodied carbon and cost assessment, useful for further methodological development.

🏢実務担当者:Offers quantitative evidence that prefabricated construction can reduce embodied carbon and costs, informing procurement and design choices.

🏛政策担当者:Highlights the potential of prefabrication for low-carbon building policy, suggesting support for such methods in building codes and incentives.

📄 Abstract（原文）

An integrated building information model (BIM) was constructed based on embodied carbon emissions (CEs) and a cost assessment framework to evaluate the environmental and economic performance of prefabricated buildings (PBs) and traditional cast in situ buildings (TBs) during the materialization stage. BIMs and carbon emission factor (CEF) methods were combined to quantify material consumption, embodied CEs, and construction costs under identical building conditions. An eight-story residential shear wall structure was selected as a case study, and carbon was analyzed across different stages. Sensitivity and uncertainty analyses were incorporated to evaluate the robustness of the accounting results under different transportation, electricity emission, and regional production scenarios. The results indicated that prefabricated construction exhibited lower embodied carbon emissions and improved economic performance compared with traditional cast in situ construction. The material production stage was identified as the dominant carbon source, while electricity-related emission factors had the strongest influence on the accounting results. The proposed framework provides a transferable methodological pathway for low-carbon building assessment and sustainable decision making in prefabricated residential construction.

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