摘要
大跨度预应力混凝土连续箱梁开裂问题较普遍。通过参考各国设计规范的有关规定,重点介绍大跨度预应力混凝土变截面连续箱梁设计过程中及构造处理上应考虑或注意的事项,以尽可能减少裂缝的产生,并提出了2种竖向预应力的设置方法。
Cracking is a problem commonly seen in longspan prestressed concrete continuous box girder. With reference to the relevant provisions in the design specifications of several countries in the world, this paper presents the matters that should be considered and noticed in the design of longspan prestressed concrete continuous box girder with variable cross section and in the handling of structural layout in order to mitigate the cracking to the possible minimum, and also proposes two kinds of layout of vertical prestressing systems.
出处
《桥梁建设》
EI
CSCD
北大核心
2003年第4期41-43,50,共4页
Bridge Construction
关键词
连续梁桥
箱形梁
预应力混凝土结构
桥梁设计
构造
综述
continuous girder bridge
box girder
prestressed concrete structure
bridge design
structure
summarization