某预应力混凝土连续梁桥内力计算分析

采用桥梁专用有限元软件MIDAS/Civil对某大跨度预应力混凝土连续梁桥的上部结构建立桥梁实体模型,并对其进行了内力计算分析,得出了不同荷载效应作用下桥梁的内力数据,同时对不同荷载效应按照正常使用极限状态和承载能力极限状态进行内力组合,绘出内力包络图,从而为大跨度预应力连续梁桥的配筋设计提供了理论依据。

Internal force calculation and analysis of a certain prestressed concrete continuous beam bridge

Abstract： MIDAS/Civil is adopted to make a superstructure of a certain prestressed concrete continuous beam bridge model, and to analyze its internal force. So internal force data of bridge in different loads are obtained, different loads are combined together to calculate internal force en- velope data base on serviceability limit state and ultimate limit state, and then envelope diagrams are made. The results can be used as a refer- ence in designing prestressed reinforcing bar when designing a continuous beam bridge.