基于螺栓连接的薄壁钢-木组合梁承载力影响因素分析

Analysis of Influencing Factors on Bearing Capacity of Thin-Walled Steel-Wood Composite Beams Connected by Bolts

为研究基于螺栓连接的钢-木组合梁承载力影响因素,采用数值模拟的方法建立了钢-木组合梁有限元模型进行定量分析。结果表明:螺栓直径对组合梁承载力影响较大;螺栓间距、木板厚度对组合梁承载力影响较小;螺栓连接可靠时钢-木组合梁的极限承载力远远大于薄壁钢梁。

The finite element models of steel-wood composite beams based on bolted connections are established and analyzed qualitatively by numerical simulation to study the influence factors of bearing capacity of the beams. The results show that the diameter of the bolt has a great influence on the bearing capacity of composite beam, but the bolt spacing and the board thickness have little effect on it. The ultimate bearing capacity of the steel-wood composite beam is much better than that of the thin-walled steel beam while the bolt connection is reliable.