摘要
预应力混凝土连续组合梁桥的截面一般由预制部分和现浇部分组成，混凝土的收缩徐变及预应力损失对结构内力及截面应力均有较大影响。运用有限元步进法结合随时间调整的有效模量法，对预应力混凝土连续组合梁桥的内力重分布和应力重分布进行了较为详细的分析，并得出一些有益的结论。
For continuous and prsetressed concrete girder bridges,creep and shrinkage of concrete and prestress loss have fairly great effect on internal forces of the strucure and stresses of the section. In this paper, with the finite element Step-by-Step method and the effective modulus method,internal forces redistrubution and stresses redistribution of a continuous prestressed concrete composite girder bridge have been analyzed in detail,and some valuable conclusion is reached.[
出处
《石家庄铁道学院学报》
1999年第1期1-6,共6页
Journal of Shijiazhuang Railway Institute
关键词
预应力
组合梁桥
内力重分布
应力重分布
prestress composite bridges internal forces redistribution stresses redistribution
