钢-混凝土双面结合梁界面在集中荷载作用下的滑移表达

The Interface Slip Expression of Double Steel-Concrete Composite Beam under Concentrated Load

钢-混凝土双面结合梁在内支座负弯矩区设置下翼缘钢筋混凝土板,并通过剪力连接件与钢梁共同作用,从而提高了梁的刚度和承载力。运用基本力学方法对钢-混凝土双面结合梁在使用荷载作用阶段的滑移效应进行探索性分析,推导得到集中荷载作用下负弯矩区上、下界面滑移及滑移应变沿梁长分布的表达式。

The rigidity and bending strength can be greatly improved in the double steel-concrete composite beam because there is a concrete bottom slab connected with the bottom steel flange by the studs that bears the negative moment. This paper makes an exploratory research on the interface slip of the double steel-concrete composite beam under negative moment with the primary mechanical principle. The formulas of interface slip and its strain along the span direction are obtained when a concentrated force acted at the center of a beam.