| 混凝土板的冲切强度 |
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| 引用本文： | 杨雪强,李子生,梁仕华.混凝土板的冲切强度[J].应用力学学报,2009,26(4). |
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| 作者姓名： | 杨雪强 李子生 梁仕华 |
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| 作者单位： | 广东工业大学,510006,广州 |
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| 摘 要： | 基于混凝土强度的试验资料,首先建立了合理描述混凝土强度破坏特性的Lade-Duncan破坏准则,并将该Lade-Duncan破坏准则转化为等效的Mohr-Coulomb破坏准则.依据塑性上限分析理论和合理的混凝土板冲切强度破坏模式,求出了圆形和矩形分布荷载下混凝土板冲切强度的统一表达式.通过与已发表的研究成果、试验结果和规范公式相比较,论证了本文给出的混凝土板冲切强度公式的合理性.
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| 关 键 词： | Lade-Duncan破坏准则 塑性上限理论 混凝土板 冲切强度 |
Punching Strength of Concrete Slab |
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| Yang Xueqiang,Li Zisheng,Liang Shihua.Punching Strength of Concrete Slab[J].Chinese Journal of Applied Mechanics,2009,26(4). |
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| Authors: | Yang Xueqiang Li Zisheng Liang Shihua |
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| Abstract: | Based on concrete testing data of failure strength, a suitable Lade-Duncan failure criterion is proposed. Then the corresponding Mohr-Coulomb failure criterion with equivalent internal friction angle is obtained. According to the upper-bound plasticity theory and the proposed punching failure modes of concrete slab, a unified punching strength formula under circle and rectangular pressure is presented and verified systematically by the corresponding concrete slab punching theory, testing data published in the literatures and concerning concrete slab punching formula recommended by China Code. |
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| Keywords: | Lade-Duncan failure criterion plasticity upper-bound theory concrete slab punching strength |
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