空心板梁桥铰缝病害分析和维修方法研究

通过对上海市绕城高速南段42座空心板梁桥铰缝典型病害的分析,总结了简支空心板铰缝破坏的病害特征,并结合病害特征综合分析铰缝损坏的原因.进一步对铰缝破坏的维修工艺进行研究,提出一种合理的铰缝维修方法,并通过维修前后板梁外观特征的检查和相邻板梁挠度差的定量测试对铰缝的维修效果进行评定,证明了该方法的有效性.从而为高速公路的简支空心板梁铰缝维修提供参考和建议.

Analyses of Disease of Hollow Slab Hinged Joint and Study on the Repair Method

The failure characteristics of hollow slab hinged joints are concluded through the typical disease analyses of 42 hollow slab bridges hinged joints at southern section of G1501 Shanghai ring expressway. The causes of hinged joints damage are synthetically analyzed through the disease characteristics of the bridges. Further studies on repair process of hinged joints damage are taken to propose a reasonable method to repair the hinged joints. And the maintenance effect of hinged joints is evaluated through the examinations of bridges＇ appearance characteristics before and after the maintenance and the quantitative tests of deflection differences between adjacent bridges before and after the maintenance, and the method is proved to be effective. Thus it provides the reference and suggestion for the maintenance work of the hollow slab hinged joints of highway bridges.