Elastic behaviour of the steel part of a shear connection with MCL composite dowels
Elastic behaviour of the steel part of a shear connection with MCL composite dowels
复制标题
MCL 复合销钉剪切连接钢件的弹性行为
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Rowiński
中科院分区：
文献类型：
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作者：
M. Kożuch;S. Rowiński
在本文中，作者提出的数值和分析方法，建立规则的尺寸MCL钢连接件的正常使用和疲劳极限状态。采用两种单元模型进行有限元应力计算：第一种模型考虑了纵向切割线对均布张拉钢板应力模式的切口效应，第二种模型用于确定由于梁的钢和混凝土部分之间的纵向剪切而导致的钢连接件中的应力模式。提出了一种建立连接器电阻包络线的数学方法。本文第二部分详细研究了钢连接件的疲劳性能。可能的裂纹模式和它们的发展机制进行了描述，合理的有限元分析和测试结果。
In this paper the authors present numerical and analytical approaches for establishing rules for dimensioning MCL steel connectors for serviceability and fatigue limit states. Two unit models were adopted for the stress calculations by means of FEM: the first one for taking into account the notch effect of the longitudinal cutting line on the stress pattern in a uniformly tensioned steel plate, the second one for determining the stress pattern in a steel connector due to longitudinal shearing between the steel and concrete parts of the beam. A mathematical approach for establishing an envelope of the connector's resistance is presented. A detailed study of the fatigue behaviour of steel connectors is presented in the second part of the paper. Possible crack patterns and their development mechanisms are described, justified by appropriate FEA and test results.