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RESEARCH ON BEARING CAPACITY OF CONCENTRICALLY LOADED STUB COLUMNS REINFORCED BY CONCRETE FILLED CFRP-STEEL TUBE
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摘要: 在统一强度理论和基本假定的基础上，考虑CFRP-钢复合管对核心区混凝土的侧向约束和外围钢筋混凝土套筒对极限承载力的贡献，推导CFRP-钢管混凝土核心轴压短柱的极限承载力公式。通过与文献中试验结果进行比较，验证理论公式的正确性，并进一步分析总套箍指标、钢管的套箍指标和CFRP筒的套箍指标对承载力的影响，为CFRP-钢管混凝土核心轴压短柱的极限承载力分析提供了一定的理论依据。
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关键词:
- 统一强度理论 /
- CFRP-钢管混凝土核心柱 /
- 极限承载力 /
- 套箍指标
Abstract: Based on unified strength theory and some essential suppositions,the ultimate bearing capacity formula of concentrically compressed stub columns reinforced by concrete filled circular CFRP-steel tube is deduced,considering the restriction of CFRP-steel tube to inner concrete and vertical bearing capacity of outer reinforced concrete.The results of the proposed formula are found in good agreement with experiment results.In the last,the effects of the total confinement factor,confinement factor of steel tube and confinement factor of CFRP on the ultimate bearing capacity are analyzed. -
王庆利,关崇伟,路建方,等.CFRP-钢管混凝土组合短柱的轴压试验[J].沈阳建筑工程学院学报:自然科学版,2004,20(3):178-182; [2] 蔡绍怀.现代钢管混凝土结构[M].北京:人民交通出版社,2003:1-58; [3] 顾威,赵颖华,尚东伟.CFRP-钢管混凝土轴压短柱承载力分析[J].工程力学,2006,23(1):149-153; [4] 林立岩,张春良.沈阳富林广场的钢管混凝土组合柱结构[J].建筑钢结构进展,2000,2(4):48-53; [5] 赵均海.强度理论及其工程应用[M].北京:科学出版社,2003; [6] 谭克锋,蒲心诚,蔡绍怀.钢管超高强混凝土的性能与极限承载力的研究[J].建筑结构学报,1999,20(1):10-15. -
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