预应力砼连续箱梁裂缝分析及防治

Causes of Cracking and Measures of Prevention in Prestressed Concrete Continuous Box Girder Bridge

预应力混凝土连续箱梁桥的开裂是施工中常见问题,影响构件的外观、使用寿命及结构安全。对预应力混凝土连续箱梁裂缝的种类和产生原因作较全面的分析总结,并从设计方面找出控制裂缝的方法,结果表明该结论对连续箱梁桥的裂缝防治具有实践指导作用。

Cracking is quite common in prestressed concrete continuous box girder bridge, which influences appearance of component,life span of using,and even safety of structure. In this paper,type and causes of crack are analyzed and summarized completely in prestressed concrete continuous box girder, and methods of controlling crack are found from design aspect to nip in the bud.