张家竣1,郑毅敏1,2,赵 勇1
混凝土叠合板的板端受剪承载力分析
张家竣1,郑毅敏1,2,赵 勇1
摘 要:混凝土叠合板的预制底板外伸钢筋会给其制作和安装带来不便,但是否可以取消预制板底外伸钢筋存在争议。根据中国和美国的现行相关标准,建立了叠合板板端可能出现的受剪破坏模式及相应的受剪承载力计算公式,并通过算例分析了未留设预制底板外伸钢筋时,叠合板跨度、活荷载与后浇层最小厚度的关系。
Abstract: Precast slab of concrete composite bottom protruding bars can bring inconvenience to the fabrication and installation. The problem whether the precast slabs cancel its bottom protruding bars or not is worth to be discussed. According to current standards in China and the United States, the possible shear failure modes and the calculating formula of relative shear capacities were proposed, through the precast slab elements without bottom protruding bars, the relationships among the span of composite slab, the value of live load and the minimum thickness of composite layer were analyzed through some calculating examples.
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