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对两个采用镀锌钢带加强的木-混凝土组合梁试件进行了试验,分析了其力学性能和受弯破坏形态,得到了跨中荷载-位移曲线及组合梁沿截面高度的纵向应变分布.结果表明,两个组合梁试体在木肋与混凝土板之间和木肋与钢带之间,其界面都发生了滑移,但影响较小;钢带最终屈服和组合梁受力性能有所改善.通过数值分析得出,当极限荷载时加钢带的木-混凝土组合梁的位移值减小截面中和轴有所下降.
Two specimens of wood-concrete composite beams strengthened with galvanized steel strip were tested, and the mechanical properties and bending failure modes were analyzed. The longitudinal strain distribution along the mid-span load-displacement curve and along the cross-sectional height of the composite beam The results show that the two composite beam specimens slide between the wood rib and the concrete slab and between the wood rib and the steel strip, but the influence is small; the final yielding of the steel strip and the mechanical behavior of the composite girder Through numerical analysis, it is found that the displacement of the wood-concrete composite beam with steel strip decreases when the ultimate load is reduced and the neutral axis of the section decreases.