頁籤選單縮合
題名 | Seismic Retrofit of Rectangular RC Bridge Columns by Steel Jacketing=鋼鈑包覆補強之矩形鋼筋混凝土橋柱耐震行為研究 |
---|---|
作者 | 林敏郎; 蔡克銓; Lin, Min-lang; Tsai, Keh-chyuan; |
期刊 | 國立臺灣大學工程學刊 |
出版日期 | 20001000 |
卷期 | 80 2000.10[民89.10] |
頁次 | 頁49-57 |
分類號 | 441.117 |
語文 | eng |
關鍵詞 | 八邊形鋼鈑包覆; 耐震補強; 側向圍束力; Octagonal steel jacketing; Seismic retrofit; Lateral confinement; |
中文摘要 | 本研究針對現有老舊橋柱進行縮尺實驗以了解其受震行為與耐震性能,並採用鋼鈑包覆方式進行耐震補強,本研究提出使補強斷面積減小且更為經濟之八邊形鋼鈑包覆補強方案,另亦驗証採用橢圓形鋼鈑包覆補強之耐震性能。經實驗証實,採用舊有設計規範及施工慣例設計之標準橋柱試體耐震性能不佳,採用八邊形鋼鈑包覆與橢圓形鋼鈑包覆補強試體均可有效提升彎矩強度與提高韌性能力,且採八邊形鋼鈑包覆補強試體表現優於採橢圓形包覆補強試體。 |
英文摘要 | The experimental responses of the rectangular RC columns retrofitted with the octagonal steel jacket are presented in this paper. Method for seismic retrofit of rectangular columns using the elliptical steel jacket is also reviewed and validated by the tests. Test results show that the double U-shaped transverse reinforcements are not effective in providing concrete confinement pressure for bridge columns. Test results confirmed that the seismic performance of the rectangular RC bridge columns can be significantly and equally enhanced by octagonal or elliptical steel jacket. It is found that the cost of the octagonal jacketing is 15% lower than that for the elliptical jacketing in the case studied. A smaller cross-sectional area and better seismic performance than the elliptical steel jacket was achieved from the octagonal steel jacket. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。