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題名 | 鋼筋混凝土角隅接頭承受單向閉合彎矩之強度行為研究=Strength Behavior of Reinforced Concrete Corner Joints Subjected to Closing Moment |
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作者 | 周煌燦; 黃世建; Chou, Huang-Tsan; Hwang, Shyh-Jiann; |
期刊 | 中國土木水利工程學刊 |
出版日期 | 20070600 |
卷期 | 19:2 2007.06[民96.06] |
頁次 | 頁251-262 |
分類號 | 441.557 |
語文 | chi |
關鍵詞 | 角隅接頭; 配筋細則; 鋼筋混凝土; 剪力強度; Corner joints; Reinforcement detailing; Reinforced concrete; Shear strength; |
中文摘要 | 角隅接頭常見於擋土牆、箱涵等地方,其鋼筋位於收尾處,故配筋作法繁複,且缺乏強度評估模型,本研究鎖定鋼筋混凝土角隅接頭承受閉合彎矩情況,依據軟化壓拉桿模型建立了剪力強度評估模式,與既有文獻上49個測試資料比對獲得滿意結果。根據本文建議之傳力機制與資料庫之比對,發現拉力鋼筋90度彎鉤之彎轉半徑,除了須遵守規範最小值之規定外,亦應考慮其對角壓桿端部支承之情況。故本文建議版式接頭儘可能的以多根較小號鋼筋取代少根之大號鋼筋,並加配橫向筋,且構材厚度應足以提供彎鉤之伸展空間。而對角筋與對角壓力方向幾乎一致,其亦可增加接頭剪力強度。 |
英文摘要 | Reinforced concrete corner joints have a wide application in retaining walls and box culvers. Due to the lack of analytical model for strength estimation, the design and detailing of the corner joints are often overbooked. The aim of this paper is to investigate the strength estimation and the related detailing for reinforced concrete corner joints subjected to closing moment. Based on the softened strut-and-tie model, an analytical model to predict the shear strength of corner joints is presented. A satisfactory correlation is obtained as comparing the computed strength with the 49 test results available in literature. According to the study of the collected test data, it is found that the bent diameter of the tensile reinforcement, providing end supports for compression struts, should conform to code minimum requirements. Smaller and uniformly distributed rebars are recommended to be used in the slab joints. The diagonal reinforcement can carry directly the diagonal compression, which is helpful for strength development. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。