Abstract: The fundamental principles for stress and internal force redistribution due to creep in composite structure with steel beam and concrete deck are described and discussed in this paper. Based on the initial strain method and the principle of energy, the element rigidity matrix and the force vector are developed in consideration of the creep behaviour of composite structure, and an example for application is introduced in detail as well.

Key words: composite structure, generalized creep coefficient, generalized elastic moduli, redistribution of stresses, redistribution of internal forces, principle of energy, initial strain method

摘要： 本文利用初应变法和能量原理来分析钢和砼结合梁的徐变内力重分布和应力重分布,导出了位移法的单元刚变矩阵和荷载矩阵,详细介绍了应用算例。

关键词: 组合结构, 广义徐变系数, 广义弹性模量, 应力重分布, 内力重分布, 能量原理, 初应变法