中国における低層、中層、高層住宅建物の体化炭素排出量の比較分析と影響要因

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🔬研究者:Detailed empirical data on embodied carbon across building types and identification of key influencing factors for low-carbon design.

🏢実務担当者:Practical guidance on selecting structural systems and materials to reduce embodied carbon in residential buildings.

🏛政策担当者:Evidence for incorporating embodied carbon limits into building codes, especially for different building heights and structural types.

抄録 運用炭素排出量が減少する中で、体化炭素排出量の削減は住宅建築における省エネルギーと炭素削減を促進する上で極めて重要である。既往研究では様々な建築特性が体化炭素排出量に与える影響を検討してきたが、異なる特性下で観察される排出量の変動の背後にある要因については十分に解明されていない。本研究では、中国の538棟の住宅建築のデータセットを用いて、低層、中層、高層建築の体化炭素強度を統計的に分析し、平均値はそれぞれ399.2、442.9、450.1 kgCO 2e /m 2 であった。次に、相関分析と有意性検定を用いて、異なる特性カテゴリー間における体化炭素排出量の差異を検討した。結果は、構造形式と抗震設防強度が主に構造材料の体化炭素強度に影響を与える一方、納品形態は主に装飾材料の体化炭素強度と関連していることを示した。提案された影響係数はさらに、コンクリートが低層および高層建築における構造形式と抗震設防強度に関連する体化炭素強度の差異の支配的要因である一方、鉄鋼は中層建築においてより大きな寄与を示すことを示した。さらに、潜在的な炭素削減対策の分析は、フレーム構造の低層および中層建築が最も高い削減ポテンシャルを示し、材料消費の最適化と輸送距離の短縮を通じてそれぞれ13.9%および15.2%の削減が達成可能であることを示した。しかし、高層建築では、せん断壁構造が最も高い削減ポテンシャル（12.5%）を示した。本研究は、低炭素の観点から住宅建築設計を最適化するための実践的な洞察を提供する。

AI 翻訳（deepseek-v4-flash）。 正確を期す場合は下の原文を参照してください。

Abstract Embodied carbon emission reduction is crucial for promoting energy conservation and carbon reduction in residential buildings as operational carbon emissions decline. While previous studies have examined the influence of various building characteristics on embodied carbon emissions, the underlying factors responsible for the observed variations in emissions under different characteristics remain insufficiently explored. Using a dataset of 538 residential buildings in China, this study statistically analyzed the embodied carbon intensities of low-rise, multi-story, and high-rise buildings, with average values of 399.2, 442.9, and 450.1 kgCO 2e /m 2 , respectively. Correlation analysis and significance tests were then used to examine differences in embodied carbon emissions across different characteristic categories. The results revealed that structural form and seismic fortification intensity primarily affected the embodied carbon intensity of structural materials, whereas delivery type was mainly associated with that of decorative materials. The proposed influence coefficients further indicated that concrete was the dominant factor to differences in embodied carbon intensity associated with structural forms and seismic fortification intensity in low-rise and high-rise buildings, whereas steel made a greater contribution in multi-story buildings. Moreover, the analysis of potential carbon reduction measures indicated that low-rise and multi-story buildings with frame structures exhibited the highest reduction potential, with reductions of 13.9% and 15.2%, respectively, achievable through material consumption optimization and transport distance reduction. However, in high-rise buildings, shear wall structures exhibited the highest reduction potential (12.5%). This study provides practical insights into optimizing residential building design from a low-carbon perspective.

• openalex https://doi.org/10.1038/s41598-026-54989-wfirst seen 2026-05-27 04:49:11 · last seen 2026-06-17 07:12:32