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桥梁结构抗剪承载力不足致使梁桥腹板出现斜向开裂是目前桥梁常见病害之一,给桥梁的正常安全运营带来很大的威胁。青秋浦大桥上部结构箱梁由于部分截面抗剪承载力不满足规范要求,在经过多年运营后,箱梁腹板出现了较为严重的开裂现象,并且经过第一次加固后腹板出现了新增斜向裂缝,为保证安全必须对桥梁再次进行维修加固设计。文章介绍了该桥的第二次维修加固设计措施,可以为抗剪承载力严重不足的桥梁加固处治提供一定的参考。
The lack of shear capacity of bridge structure causes the webs of girders to crack obliquely. It is one of the most common diseases in bridges at present, which poses a great threat to the normal and safe operation of bridges. Qing Qiu Pu Bridge superstructure box girder section of the shear strength of some sections do not meet the requirements of the standard, after many years of operation, the box girder web appeared more serious cracking phenomenon, and after the first reinforcement of the web after a new By oblique cracks, in order to ensure the safety of the bridge again to be reinforced design. This paper introduces the second design and repair of the bridge reinforcement measures, which can provide some reference for the strengthening and treatment of bridges with serious insufficient shear capacity.