| 大跨半钢板混凝土简支梁承载力性能试验研究 |
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| 引用本文： | 李德月,潘 蓉,孙运轮,李 易,闫维明.大跨半钢板混凝土简支梁承载力性能试验研究[J].工程力学,2014,31(5):64-70. |
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| 作者姓名： | 李德月 潘 蓉 孙运轮 李 易 闫维明 |
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| 作者单位： | 1.北京工业大学工程抗震与结构诊治北京市重点实验室, 北京 100124; |
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| 基金项目： | 国家科技重大专项项目(2008ZX06902-008);北京市教委科研计划项目(KM201310005025);国家博士后科学基金项目(2012M510301);北京市博士后科研项目(2012ZZ-13) |
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| 摘 要： | 为了研究大跨半钢板混凝土组合梁的承载力和变形性能, 对一个1∶3缩尺的大跨简支梁试件进行了静载试验研究。通过分析试件在加载过程中的挠度、应变和裂缝的发展, 研究了此类构件的受力特点和破坏形态, 结果表明该类型构件中的钢板、混凝土和钢筋能够很好的协同工作, 整个构件具有较高的承载力和刚度, 同时表现出很好的延性。最后, 通过对比实测数据和理论计算结果, 检验了现行规程中组合梁正截面抗弯承载力和短期刚度的计算公式, 为工程设计提供参考。
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| 关 键 词： | 钢板混凝土 大跨度简支梁 静载试验 正截面抗弯承载力 抗弯刚度 |
| 收稿时间： | 2013-03-26 |
EXPERIMENTAL INVESTIGATION ON LOAD-BEARING CAPACITY OF LARGE-SPAN HSC SIMPLY SUPPORTED BEAM |
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| Affiliation: | 1.Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China;2.Nuclear and Radiation Safety Center of MEP, Beijing 100082, China;3.Chinergy Company Limited, Beijing 100193, China |
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| Abstract: | In order to study the load bearing and deformation capacity of a large-span half steel-plate-reinforced concrete (HSC) beam, a static test of a scaled down (1∶3) simply supported specimen is conducted. The mechanical characteristics and damage process of the HSC specimen are investigated by analyzing the development of the deflection, strain and fracture during loading process. Good combination action is observed during the test in steel plates, reinforcing bars and concrete in HSC beam;and the specimen has good mechanical properties of high bearing capacity, large stiffness and high ductility. At last, the calculation formulae for the bending capacity and short-term stiffness of the composite beam in existing codes are examined via the experimental results and theoretical analysis, which provides a reference for engineering design. |
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