Punching Shear Failure Mechanism of Open Sandwich Slab and its Parameters' Effects
Punching Shear Failure Mechanism of Open Sandwich Slab and its Parameters' Effects
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开口夹层板冲剪破坏机理及其参数影响
DOI：
10.3151/jact.3.283
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发表时间：
2005
影响因子：
2
通讯作者：
T. Ueda
中科院分区：
文献类型：
--
作者：
A. Farghaly;H. Furuuchi;T. Ueda
利用三维有限元程序对带栓钉夹层空腹板的冲剪破坏机理和强度进行了分析。在分析中，栓钉的剪切传递模型采用杆单元，其本构模型来自作者的实验研究，和张力传递桁架单元。结果表明，分析值和实验值之间的非常好的协议。冲切破坏现象进行了仔细研究，观察预测混凝土开裂和混凝土破碎分析。在分析观测的基础上，对混凝土强度、板厚、栓钉高度、栓钉间距等因素进行了定性研究，提出了空腹夹层板冲切承载力计算的解析表达式。
A 3D FEM program was used to predict the punching shear failure mechanism and its strength for open sandwich slabs with studs. In the analysis, studs were modeled using link elements for shear transfer, whose constitutive model is derived from the authors' experimental studies, and truss elements for tension transfer. The results showed very good agreement between the analytical and experimental values. Punching shear failure phenomena were carefully examined in analysis observing predicted concrete cracking and concrete crushing. Based on analytical observation, a qualitative study on factors such as concrete strength, plate thickness, stud height, and stud spacing, was performed to develop an analytical expression for computing the punching shear strength of open sandwich slabs.