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为了明确工字型钢-混凝土组合梁的竖向抗剪性能,通过建立三维有限元数值模型,对试验过程进行非线性数值模拟与分析,计算结果和试验数据比较吻合。利用该模型,分析工字型钢-混凝土组合梁的竖向受力变形机理,探讨混凝土翼板强度、混凝土翼板的宽度及其有效高度、剪跨比与混凝土翼板的剪跨比对组合梁混凝土翼板抗剪性能的影响,可为工程设计提供参考依据。
In order to clarify the vertical shear resistance of I-shaped steel-concrete composite beams, a three-dimensional finite element numerical model is established to simulate and analyze the experimental process nonlinearly. The calculated results are in good agreement with the experimental data. Using this model, the vertical stress and deformation mechanism of I-shaped steel-concrete composite beam is analyzed. The strength of concrete wing, the width of concrete wing and its effective height, the ratio of shear span to the shear span of concrete wing, Shear performance of concrete slab can provide a reference for engineering design.