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首页> 外文会议>International Conference on Composite Construction in Steel and Concrete; 20040718-23; Mpumalanga(ZA) >CONNECTION BEHAVIOUR OF A CONCRETE DOWEL IN A CIRCULAR WEB HOLE OF A STEEL BEAM
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CONNECTION BEHAVIOUR OF A CONCRETE DOWEL IN A CIRCULAR WEB HOLE OF A STEEL BEAM

机译：钢梁圆孔中混凝土销的连接行为

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摘要

The traditional method of designing a shear connection for composite structures loaded in flexure is to employ mechanical connectors; normally headed steel studs on top of the steel section. In new types of composite beam where most of the beam is embedded in the concrete, another method of arranging mechanical connection may be employed: the dowel action between the steel web and concrete appearing in the openings through the steel section. When developing applications for such connections, the shear behavior of the concrete dowel should be known. High initial stiffness is typical for concrete dowels, but the shear resistance will depend on the out-of-plane geometry of the opening. A total of 74 push-out specimens were tested in 2002 - 2003 to find out the shear-slip properties of the concrete dowel connection. Behavior of various edge profiles in the circular plate opening is studied. Various fracture mechanisms observed in the concrete dowels are reported in this paper.
机译：设计弯曲连接的复合结构的剪力连接的传统方法是采用机械连接器。通常在钢型材的顶部为双头钢螺柱。在新型的复合梁中，大部分梁都埋在混凝土中，可以采用另一种布置机械连接的方法：钢腹板与混凝土之间的销钉作用出现在贯穿钢截面的孔中。在开发此类连接的应用程序时，应知道混凝土销的剪切性能。高的初始刚度通常用于混凝土定位销，但抗剪强度将取决于开口的平面外几何形状。在2002年至2003年期间，总共测试了74个推出样本，以找出混凝土销钉连接处的剪切滑移特性。研究了圆形板开口中各种边缘轮廓的行为。本文报道了在混凝土销钉中观察到的各种断裂机理。

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