| 竖向荷载作用下整浇梁板的空间效应试验研究 |
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| 引用本文： | 蒋利学,郑乔文.竖向荷载作用下整浇梁板的空间效应试验研究[J].建筑结构学报,2009,30(Z1):200-207. |
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| 作者姓名： | 蒋利学 郑乔文 |
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| 作者单位： | 上海市建筑科学研究院; |
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| 基金项目： | 国家科技支撑计划项目(2006BAJ03A07);;建设部研究开发项目(2007-K3-16) |
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| 摘 要： | 对2个空间整浇梁板试件进行了竖向静力加载试验,并通过与不带板的梁试件及平面截断梁板试件的对比和非线性有限元分析,研究了竖向荷载作用下整浇梁板的空间效应对梁受力性能的影响。非线性有限元分析结果与试验结果基本吻合。试验与分析结果表明:空间梁板试件的边支座直交梁出现扭转裂缝,楼板上的裂缝多斜向分布,梁边支座截面及直交方向梁、板截面均存在一定的弯矩,空间梁板试件存在明显的空间传力路线;空间梁板试件的梁跨中先出现塑性铰,而在支座截面出现塑性铰之前,发生梁支座截面受压区混凝土压碎或支座附近剪切破坏,这种破坏模式与平面截断梁板试件基本相同,而与不带板的梁试件的破坏模式完全不同;整浇梁板的空间效应大幅度提高了梁的刚度和承载能力。
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| 关 键 词： | 承载能力 刚度 静力试验 空间效应 破坏模式 整浇梁板 |
Experimental research on spatial effect of cast-in-situ beam-slab system under vertical loads |
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| JIANG Lixue,ZHENG Qiaowen.Experimental research on spatial effect of cast-in-situ beam-slab system under vertical loads[J].Journal of Building Structures,2009,30(Z1):200-207. |
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| Authors: | JIANG Lixue ZHENG Qiaowen |
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| Affiliation: | Shanghai Research Institute of Building Sciences;Shanghai 200032;China |
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| Abstract: | Static tests of two spatial cast-in-situ beam-slab specimens under vertical loads were performed.The behaviors of beam specimen without slab and interceptive beam-slab specimen were also presented.Comparison demonstrated the influences of the spatial effect of cast-in-situ beam-slab system on mechanics behavior of beams.Nonlinear FEM analysis was performed and good agreement was observed between FEM results and testing results.Both tests and analysis reveal that: for the spatial beam-slab specimens,(1) crac... |
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| Keywords: | cast-in-situ beam-slab system spatial effect static test failure mode stiffness load carrying capacity |
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