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通过在钢与混凝土之间设置假想的剪切薄层,依靠剪切层的剪切变形考虑钢板与混凝土板之间的相对滑移,建立考虑滑移效应的钢-混凝土组合板模型,并推导出四边简支组合板在均布横向荷载作用下的弯曲变形和单向压缩作用下的弹性稳定解析解。通过有限元分析,验证了模型和解析解的正确性和适用性。参数分析表明:当χ5时,四边简支组合板弹性屈曲荷载接近于钢板和混凝土板各自的弹性屈曲荷载之和,可近似不考虑组合板中钢板与混凝土板的共同作用。
By setting the imaginary shear thin layer between the steel and the concrete, the relative slip between the steel plate and the concrete slab is taken into account by the shear deformation of the shear layer, and the steel-concrete composite slab model considering the slip effect is established and deduced Elastic Stability Analysis of Simply Supported Composite Slab Under Flexural and Unidirectional Compression Under Uniformly Transverse Load. Through the finite element analysis, the correctness and applicability of the model and analytic solution are verified. Parametric analysis shows that when χ5, the elastic buckling load of the simply supported composite plate is close to the sum of the elastic buckling loads of the steel plate and the concrete plate, respectively, and it does not consider the combined effect of the steel plate and the concrete plate in the composite plate.