摘要
经过大量的工程应用,预应力混凝土连续箱梁裂缝问题暴露明显,针对其开裂原因、加固方法的研究成为热点。本文通过资料的收集整理,总结了常见的裂缝形态,并分析了开裂原因。在对裂缝深入研究和多年加固实践的基础上,提出了加固概念设计的方法。通过一个预应力混凝土连续箱梁裂缝的加固设计,展示了该方法的应用过程与效果。
As known from many engineering practices, cracking in prestressed concrete continuous box girder is serious. A study on mechanism of its cracking and reinforcing method of the cracks becomes a hot spot. In this paper the several familiar crack forms are presented and the reasons of cracking analyzed. On the basis of thorough study on the cracks and reinforcing practices in many years, the design method based on reinforcing concept is put forward. Last, the application and effects of the method are showed by a example.
出处
《公路》
北大核心
2006年第7期85-89,共5页
Highway
关键词
预应力连续箱梁
裂缝
加固
加固慨念设计
prestressed continuous box girder
crack
reinforce
design method based on reinforcing concept
