预应力混凝土连续箱梁桥加固技术研究

Study on strengthening technology of prestressed concrete continuous box girder bridge

文章通过对一座特大预应力混凝土连续箱梁桥加固为工程背景,从病害成因、加固措施、体外预应力施工技术等方面,对加固前后的效果进行了分析与对比。结果表明,加固效果明显,加固后桥体的极限承载能力有较大提高,整体工作性能有明显改善。

Based on the engineering background of a large prestressed concrete continuous box girder bridge,this paper analyzes and compares the effects before and after reinforcement from the aspects of disease cause analysis,reinforcement measures,external prestressing construction technology.The results show that the effect of reinforcement is obvious,the ultimate bearing capacity of the bridge body is greatly improved,and the whole working performance is obviously improved.