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| 題 名 | 輕質混凝土於橋梁工程應用=Application of Lightweight Concrete in Bridge Engineering |
|---|---|
| 作 者 | 連冠華; 陳柏佑; 林舜元; 詹文宗; 羅財怡; | 書刊名 | 中興工程 |
| 卷 期 | 167 2025.04[民114.04] |
| 頁 次 | 頁(C)1-(C)8 |
| 分類號 | 441.8 |
| 關鍵詞 | 輕質混凝土; 橋梁工程; 工程應用; 節能減碳; Lightweight concrete; Bridge engineering; Application of engineering; Save energy and reduce carbon emissions; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 輕質混凝土」Lightweight Concrete)係由輕質粒料取代傳統天然粒料、具有輕質、隔熱保溫及耐火性能好, 結構用輕質混凝土則可符合大部分工程設計強度之需求。因此在國外已經將輕質混凝土推向實務面並完成許多應 用,尤其是北歐的挪威亦有將近二十年之歷史,將輕質混凝土應用於橋梁工程,並搭配預力之使用,設計更細長 之輕質混凝土橋。相較於國外輕質混凝土的盛行,國內首度將輕質混凝土應用國道 6 號石灼巷跨越橋,惟其輕質 混凝土於泵送過程發生塞管以致澆置困難,因此國道4號臺中環線豐原潭子段以透過輕質粒料之選擇、預濕處理、 配比設計等方法進行施工性之改善,解決泵送問題,且首次將輕質混凝土納入主線橋梁設計。 基於此,本文針對輕質混凝土性能、塞管改善因應、國內外工程應用案例進行說明,並以中山高跨越橋型研 選過程中方案作為案例,分析比較上構採常重混凝土與部分採用輕質混凝土之差異。分析比較結果顯示若上構部 分採用輕質混凝土對比採常重混凝土設計,可有效減輕上部結構自重、地震力及上構預力鋼腱用量等,以提升工 程經濟效益及節能減碳作為。 |
| 英文摘要 | Lightweight Concrete is made of lightweight aggregates instead of traditional aggregates. It possesses many advantages, such as light weight, high strength, good thermal insulation and fire resistance. Lightweight concrete for structural use can meet the demands of strength in most engineering design. Therefore, lightweight concrete has been pushed into practice and many applications have been completed around the world. In particular, Norway in Northern Europe has adopted lightweight concrete for bridge engineering in the past 20 years. Slender bridges can be designed by combination of lightweight concrete and prestressing. Compared with the prevalence of lightweight concrete among the world, Shizhuo Overpass Bridge is the first bridge designed and constructed with lightweight concrete of National Freeway No.6 in Taiwan. However, there was pumping problem encountered during construction in 2007. Therefore, the Fengyuan Tanzi section of Taichung Ring Road in National Freeway No.4, the constructability was improved through methods, such as adopting lightweight aggregates, pre-wet treatment and proportion design to solve the pumping problem. It’s the first time to bring into lightweight concrete in bridge design of freeway main lane. As mentioned above, this paper illustrates the performance of lightweight concrete, the improvement of clogged pipes, and engineering application around the world. The overpass of Freeway No. 1 is also used as an example to analyze and compare the difference between fully normal weight concrete and partially lightweight concrete for superstructure. The results shows that the use of lightweight concrete instead of normal weight concrete can effectively reduce the self-weight of superstructure, seismic force, and the amount of prestressing tendons. It not only improves the economic benefits of engineering, but also saves energy and reduces carbon emissions. |
本系統中英文摘要資訊取自各篇刊載內容。