摘要
介绍某大桥预应力混凝土箱梁施工过程中,预应力束张拉后锚固端出现的开裂现象;采用有限元法计算开裂部位的应力场,应力计算的基础上分析裂缝产生的原因;提出防止产生此类裂缝的处理措施。
In this paper, the cracks at the anchorage end of a prestressed concrete box girder, ari- sing after the prestressing tendons are tensioned in the construction of a bridge, is described firstly. Then the stress field of the cracking region is computed by Finite Element Method and the cause of cracking is analyzed based on the stress computation. Finally, the treating measures to prevent such cracks from ari- sing are presented.
出处
《公路工程》
北大核心
2013年第2期133-136,共4页
Highway Engineering
关键词
预应力混凝土
箱梁
锚固区
混凝土裂缝
prestressed concrete
box girder
anchorage region
crack of concrete
