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題名 | 鋼筋混凝土T形斷面梁之剪力跨度與梁深關係之研究=The Relation between Shear Span and Sectional Depth of Reinforced Concrete T-Beams |
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作 者 | 王勇智; 李俊偉; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 19:4 2007.12[民96.12] |
頁次 | 頁579-585 |
分類號 | 441.557 |
關鍵詞 | 剪力強度; 剪力跨度; 壓拉桿模式; 實驗; Shear strength; Shear Span; Strut-and-tie model; Testing; |
語文 | 中文(Chinese) |
中文摘要 | 本研究主要是探討規範以剪力跨度a及斷面深度h(或斷面有效深度d)之比值a/h =2(或a/d =2.5),作為RC矩形斷面深梁行為之判別,是否適用於RC T形斷面梁。文中除了製作五根矩形及五根T形斷面梁,按不同a/d作四點荷重實驗外,亦分別利用規範剪力強度經驗式及壓拉桿模式作為本測試梁剪力強度之預測,以利進一步探討兩種不同斷面深梁在a/d值之差異。研究結果顯示T形斷面與矩形斷面梁,利用a/d作深梁判別差異性不大,且目前規範之規定,應可適用於一般建築物RC T形斷面梁。 |
英文摘要 | The aim of the study is t verify whether the issue on the code-specified deep beam behavior for the ratio of shear span to sectional depth a/h = 2 (or a/d = 2.5) can apply to RC T-sectional beams, or not. Experimental works were made on testing five rectangular and five T-sectional RC 4-pointloading simply supported beams, where no stirrup was used. RC traditional model and strut-and-tie model were adopted to analyze the difference of a/d between rectangular and T-sectional deep beams. Results are shown, though the a/d value for T-beam is slightly larger than that for rectangular beam, it could be regarded as the same range for both of the two sectional beams. In conclusion, the code specification on deep beam for a/d value can be applied to RC T-sectional beams as they actually existed in RC buildings. |
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