| 纯扭作用下钢纤维混凝土梁极限扭矩计算方法的研究 |
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| 引用本文： | 邱继生,姚谦峰. 纯扭作用下钢纤维混凝土梁极限扭矩计算方法的研究[J]. 工业建筑, 2010, 40(1): 78-81,97 |
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| 作者姓名： | 邱继生 姚谦峰 |
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| 作者单位： | 西安建筑科技大学土木工程学院,西安,710055;西安科技大学建筑与土木工程学院,西安,710054;西安建筑科技大学土木工程学院,西安,710055 |
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| 基金项目： | 国家自然科学基金资助项目(50908188);;国家“十一五”科技支撑项目子课题(2006BAJ04A02-5);;陕西省13115资助项目(2008ZDKG-76) |
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| 摘 要： | 利用变角空间桁架模型,根据钢纤维混凝土梁在扭转作用下的受力性能,考虑钢纤维的影响,根据力的平衡,得出钢纤维混凝土梁在纯扭作用下极限扭矩的计算公式。公式将钢纤维的作用等效为纵向和横向钢筋的面积来进行计算,与普通混凝土结构极限扭矩的计算公式衔接较好。最后,将公式计算的极限扭矩结果与已有文献中的试验结果进行比较,结果表明:公式计算精度较高,具有一定的使用价值。
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| 关 键 词： | 钢纤维混凝土 变角空间桁架模型 极限扭矩 承载力 |
STUDY ON CALCULATION METHOD OF THE ULTIMATE TORQUE OF BEAM REINFORCED WITH STEEL FIBER IN TORSION |
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| Qiu Jisheng,Yao Qianfeng. STUDY ON CALCULATION METHOD OF THE ULTIMATE TORQUE OF BEAM REINFORCED WITH STEEL FIBER IN TORSION[J]. Industrial Construction, 2010, 40(1): 78-81,97 |
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| Authors: | Qiu Jisheng Yao Qianfeng |
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| Affiliation: | 1.School of Civil Engineering;Xi'an University of Architecture and Technology;Xi'an 710055;China;2.School of Architecture and Civil Engineering;Xi'an University of Science and Technology;Xi'an 710054;China |
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| Abstract: | In this paper,based on the mechanical capacity of beams reinforced with steel fiber in torsion and taking account of the influence of the steel fiber,the formulas on ultimate torque of the beams are given using the variable angle space truss model.So that the formulas make the function of steel fibers as the equivalent longitude and transverse steel bars,which can joint well with the calculation formulas on ultimate torque of common reinforced concrete beams.Then the prediction results are compared with the... |
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| Keywords: | steel fiber reinforced concrete variable angle space truss model ultimate torque bearing capacity |
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