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題 名 | 鋼筋混凝土構件受扭力與彎矩組合載重作用之行為=Behavior of Reinforced Concrete Members Subjected to Combined Torsion and Bending |
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作 者 | 邱浩然; 方一匡; 張建偉; | 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567-577 |
分類號 | 441.557 |
關鍵詞 | 鋼筋混凝土; 扭力與彎矩組合載重; 勁度; 變形能量密度; Reinforced concrete; Combined torsion and bending; Stiffness; Deformation energy density; |
語 文 | 中文(Chinese) |
中文摘要 | 本文旨在探討鋼筋混凝土梁受扭力(T)與彎舉(M)組合載重作用下之強度、破壞模式、勁度以及變形能量密度等行為及AASHTO LFRD設計規範之相關規定。根據試驗結果顯示,試體表面混凝土平均主壓應變最大值發生位置會因T/M比值的增加,由試體頂面轉移至側面,進而改變其破壞模式。此外,試體之開裂扭矩勁度值則會因扭力的增加而減小,而試體斷面在受到扭力與彎矩組合作用力下所能提供之變形能量密度則會隨著扭力作用的增加而顯著減小。AASHTO LFRD設計規範對於構件受扭力與彎矩組合載重作用之下縱向鋼筋量限制公式,可以合理地預測試體之扭矩與彎矩強度互制關係的變化趨勢。 |
英文摘要 | This paper investigates the strength, failure mode, stiffness and deformation energy density of the reinforced concrete beams subjected to combined torsion and bending. In addition, the associated specifications of AASHTO LRFD provisions are discussed. The test results show that the location of the maximum average principal compressive strain of concrete shifted from the top to back side of the specimens due to the increase of the T/M ratios, and the failure modes were also changed. In addition, the ratio of the cracked torsional stiffness decreased with the increase of torsion. The deformation energy densities of the specimens subjected to combined torsion and bending decreased with the increase of torsion. The specification of the amounts of longitudinal reinforcements for the reinforced concrete beam subjected to combined torsion and bending in the AASHTO LRFD provisions can be used to rationally predict the strength interaction of the specimens. |
本系統中英文摘要資訊取自各篇刊載內容。