Abstract: This paper proposes a simlified method for computing the intenal forces of composite steel girder using the entire cross-section. It involves the solution by the well-known carry-over stiffness matrix technique in which any available computer program may be adopted. Using this method, the response due to concrete creep is obtained by relaxation coefficient approach, which was introduced by prof. Trost. Nevertheless, it can also be extended to effective elastic modulus approach. An example on composite steel girder is given, but it may be used on preflex-girder, composite steel girder in cable-stayed system as well as in concrete composite girder.

摘要： 本文建议一种采用全截面计算钢结合梁内力的简化方法。该法可用熟知的传递刚度矩阵法处理,故可利用现有的各种计算机程序。方法中对徐变反应的计算系基于Trost教授提出的松弛系数法,自然也可进一步推广到有效弹性模量法。文章以一个钢结合梁为例加以说明,也可以推广到预弯梁(Preflex-beams)、斜张桥结合梁,混凝土迭合梁等结构的计算。