木 - 混凝土组合梁弹性抗弯承载力研究

为了研究相对滑移对木-混凝土组合梁弹性抗弯承载力的影响,结合对木-混凝土组合梁的梁截面受力特点的分析,建立了木-混凝土组合梁弹性抗弯承载力计算模型,提出了考虑滑移后组合梁简化弹性抗弯承载力公式,使组合梁承载力公式得到优化。同时为验证公式正确性,利用Ansys有限元分析软件进行有限元分析。通过有限元分析与理论公式进行比较,结果表明:理论推导公式与有限元分析吻合良好,可以适用于木-混凝土组合梁弹性抗弯承载力计算。

Analysis of elastic bending bearing capacity of timber-concrete composite beam

In order to study the effect of relative slip on elastic bending bearing capacity of Timber-Concrete Composite beam, combined the stress characteristics of the beam section, established the elastic bending bearing capacity calculation model of TimberConcrete Composite beam.A simplified formula for elastic bending bearing capacity of composite beam considering slippage was proposed.The bending stiffness formula of composite beam was optimized.At the same time, to verify the correctness of the formula, utilizes the finite element software of ANSYS. The comparison between the finite element analysis and the theoretical formula shows that the theoretical formula is in good agreement with the finite element analysis and can be applied to the calculation of elastic bending bearing capacity of Timber-Concrete Composite beam.