不同连接程度的钢-混凝土组合梁的试验研究

Experimental Study of Steel-concrete Composite Beams with Different Degrees of Shear Connection

为探讨连接件对钢-混凝土组合梁在静载作用下的抗弯性能的影响,本文进行了三根不同剪力连接的组合梁试件的试验,观察试件的受力性能、破坏形式,分析试件的荷载-位移曲线、荷载-应变曲线、荷载-滑移曲线、滑移分布以及发展情况。试验研究与数值分析表明,连接件对组合梁的变形具有较大影响,不同连接程度的组合梁都具有良好的延性。此外,还对界面摩擦力的影响进行了初步的讨论。

In order to investigate the influence of the connecting fitting on the bending resistance of the steel- concrete composite beams under the static concentrate, three samples of steel-concrete composite beams are experimented to observe the bending capacity, failure mode, load-deflection relationship, load-strain relationship, load-slip relationship and slip distribution of steel-concrete composite beams in this paper. The research of experiment and the analysis show that the connecting fitting greatly influences its distortion of composite beams, and the steel-concrete composite beams of differently connected degrees have good tenacity in displacement. Additionally, the paper preliminarily discusses the imoact of the interface friction.