简支组合梁弹性变形及极限抗弯承载力计算

CALCULATION OF THE ELASTIC DEFORMATION AND THE ULTIMATE BEARING CAPACITY OF RESISTING MOMENTS OF SIMPLE COMPOSITE BEAMS

针对简支组合梁在常温弹性状态下的变形计算 (包括短期变形和长期变形 )和极限抗弯承载力计算 (包括腹板出现局部失稳和不出现局部失稳 )的各种现有方法进行了综合阐述。尤其针对现行规范所依据的设计假定中忽略的不安全因素进行了总结性的论述和归纳 ,有助于相关规范的理解并对工程实践具有一定的参考价值。

Many articles have been thoroughly compiled to calculate the short-term and long-term deformation of simple composite beams in the elastic circumstance and the ultimate bearing capacity of resisting moments of composite beams including the case of web's local buckling happening prior to the plasticity of whole cross-section and vice-verse.Particularly in this paper,the dangerous factors being ignored in the design assumptions on which the existing building codes based have been totally generalized and put forward,which can help designers to have a better understanding of the relevant codes and provides an conductive way to have construction better implemented.