| 研究生: |
林詠勳 Lin, Yung-Hsun |
|---|---|
| 論文名稱: |
內含磚牆RC構架耐震補強工法之碳足跡比較研究 A Study of Carbon Footprint Assessment of Seismic Retrofitting of Masonry-infilled RC Frames |
| 指導教授: |
洪崇展
Hung, Chung-Chan |
| 共同指導教授: |
林彥宇
Lin, Yen-Yu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2025 |
| 畢業學年度: | 113 |
| 語文別: | 中文 |
| 論文頁數: | 100 |
| 中文關鍵詞: | 耐震補強 、碳足跡 、碳排放 、超高性能混凝土(UHPC) |
| 外文關鍵詞: | Seismic Retrofitting, Carbon Footprint, Carbon Emissions, Ultra-high performance concrete (UHPC) |
| 相關次數: | 點閱:21 下載:2 |
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我國老舊建築物多屬低矮型鋼筋混凝土結構,建築內之磚牆常為加強磚造,歷經多次地震災害後,常因底層構件毀損造成建築倒塌,因此希望藉由耐震補強工程,提升建築物耐震能力,並延長此類型的建築物使用壽命,以避免大量興建建築物,消耗大量鋼筋、混凝土等高排碳量材料,造成碳排放量的上升。
本研究探討內含磚牆RC構架之三種耐震補強工法碳足跡,作為後續規劃設計單位與施工廠商評估耐震補強工程對環境衝擊之評估參考,三種耐震補強工法分別為擴柱補強工法、翼牆補強工法以及超高性能混凝土(Ultra-High Performance Concrete,UHPC)噴漿補強工法。經分析,每提升1kN耐震強度,擴柱補強工法會產生11.47 kgCO2e、翼牆補強工法會產生6.81 kgCO2e、UHPC噴漿補強工法會產生1.34 kgCO2e,分析結果顯示出在相同補強強度需求之建築物下,使用UHPC噴漿補強工法能以最少碳排放量達到相同補強效果。
整體而言,在施工效率、低環境衝擊、良好耐震性能效益及低碳排放量之優勢下,本研究建議在具備施作條件之耐震補強工程中,優先評估採用UHPC噴漿補強工法。
In Taiwan, many aging buildings are characterized by low-rise reinforced concrete structures, with infilled brick walls that are often constructed using reinforced brickwork. After experiencing multiple earthquake events, these buildings frequently suffer collapse due to damage to the lower-story structural components. To enhance seismic resilience and extend the service life of such buildings, seismic retrofitting projects are implemented. This approach aims to reduce the need for large-scale reconstruction and the consumption of high-carbon-emission materials such as steel and concrete, thereby mitigating the rise in carbon emissions.
This study investigates the carbon footprint of three seismic retrofitting methods for RC frames with infilled brick walls. The findings are intended to provide a reference for design planners and construction contractors in assessing the environmental impact of different retrofitting strategies. The three retrofitting methods examined are: column jacketing, wing wall retrofitting, and ultra-high-performance concrete (UHPC) shotcrete retrofitting. According to the analysis, for every 1kN increase in seismic strength, the carbon emissions are as follows: 11.47 kgCO₂e for the column jacketing method, 6.81 kgCO₂e for the wing wall method, and 1.34 kgCO₂e for the UHPC shotcrete method. The results indicate that, for buildings requiring the same level of seismic improvement, the UHPC shotcrete retrofitting method achieves the target performance with the lowest carbon emissions.
Overall, considering the advantages of construction efficiency, reduced environmental impact, enhanced seismic performance, and lower carbon emissions, this study recommends prioritizing the use of the UHPC shotcrete retrofitting method in seismic retrofitting projects where implementation conditions are suitable.
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