【作者】 程竞； 范重； 杨苏；

【Author】 CHENG Jing 1,2 , FAN Zhong 1 (1.China Architecture Design & Research Group, 100044; 2.University of Science and Technology Beijing, 100083)

【机构】 中国建筑设计研究院； 北京科技大学；

【摘要】 钢-混凝土组合梁具有良好的适用性,近年来在国内外得到广泛应用,压型钢板及钢筋桁架楼承板形式的组合梁发展形式良好。混凝土强度等级、混凝土翼板厚度、楼板形式、1H型钢规格和组合梁的位置以及钢-混凝土的界面滑移等因素,对钢-混凝土组合梁刚度增大系数取值均有不同程度的影响。高层结构组合梁的等效刚度增大系数的分析和计算较为复杂,对结构整体设计计算影响较大,对于组合梁刚度增大系数的取值应该引起结构设计人员的重视。更多还原

【Abstract】 Steel-concrete composite beams are applicable and widely used. Composite beams with formed steel deck or truss deck are well developed around the world in recent years. The strength grade of concrete, flange thickness, slab form, dimension of H-shaped steel, the position of composite beams, as well as the interfacial slip between steel and concrete, have different levels of influences on the stiffness of steel-concrete composite beams. Analysis and calculation of the equivalent stiffness amplified coefficient is very complicated, and the result has a significant impact on the design of the whole structure. So construction engineers shouldthink carefully before choosing the value of stiffness amplified coefficient of the composite beams.更多还原