预应力混凝土桥梁次内力的结构有限元分析和算法探讨

Finite Element Method Analysis and Some Discussions on the Secondary Forces of Prestressed Concrete Bridge

摘要: 本文提出了预应力混凝土桥梁结构弹性工作阶段的有限元分析方法。将预应力及恒载的作用转换为等效节点荷载,按各施工阶段计算弹性及徐变次内力。在次内力的求算方法上,作者推证了两条重要结论。

Abstract: This paper presents a finite element method of analyzing the secondary forces of prestressed concrete bridge. Illustrates how to convert prestress actions and dead loads to their equivalent nodal loads. Two important conclusions on the algorithm of secondary forces are derived by authors.