| 钢筋混凝土深梁局部承压的试验研究及可靠度分析 |
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| 引用本文： | 龚绍熙,刘立新. 钢筋混凝土深梁局部承压的试验研究及可靠度分析[J]. 郑州大学学报(工学版), 1987, 0(3) |
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| 作者姓名： | 龚绍熙 刘立新 |
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| 作者单位： | 郑州工学院土建系，郑州工学院土建系 |
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| 摘 要： | 本文论述了筋钢混凝土深梁局部承压的特点和破坏形态。通过对34个发生局压破坏的深梁试件的分析表明,深梁的局部承压可靠度按TJ10-74规范的公式进行验算时能满足要求。但按新修订的规范验算时,因局部承压计算底面积Ab取值偏大,使局压强度提高系数β_■~(**)的取值偏高,无论按新规范的公式或按局压专题组原建议的公式验算,其可靠度均不能满足要求。本文给出深梁局压强度提高系数β_■的修正公式,进行了可靠度分析,并给出了深梁不需进行局压验算的最小支承长度。
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| 关 键 词： | 梁深 局部承压 可靠度分析 |
EXPERIMENTAL RESEARCH AND RELIABILITY ANALYSIS OF LOCAL COMPRESSION IN REINFORCED CONCRETE DEEP BEAMS |
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| Gong ShaoxiE,Liu Lixin Civil Engineering and Architecture Depariment. Zhengzbou Institute of Technology. EXPERIMENTAL RESEARCH AND RELIABILITY ANALYSIS OF LOCAL COMPRESSION IN REINFORCED CONCRETE DEEP BEAMS[J]. Journal of Zhengzhou University: Eng Sci, 1987, 0(3) |
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| Authors: | Gong ShaoxiE Liu Lixin Civil Engineering Architecture Depariment. Zhengzbou Institute of Technology |
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| Affiliation: | Gong ShaoxiE;Liu Lixin Civil Engineering and Architecture Depariment. Zhengzbou Institute of Technology |
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| Abstract: | In this paper, the behaviour and the modes of local compressive failure in reinforced concrete deep beams are specially discussed. The analysis results of the experiments on 34 speciments of reinforced concrete deep beams occuring local compressive indicate that the relia- bility index of local compressive strength calculated by the formula of PRC code TJ10-74 is satisfied, but the reliability index of local compressive strength calculated by the formulas of new PRC code and the research group of local compression can not be satisfied. The imp- roved formula and result of reliability analysis are given in this paper, the minimal supporting length that needn't to calculate local comp- ressive strength in reinforced concrete deep beams is also given by authors. |
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| Keywords: | deep beams local compression reliability analyse |
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