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文章结合江西省修水沙滩大桥拓宽提载工程,研究提出纵桥向预制安装整体式桥面板拓宽技术,并与横桥向改双曲拱式拱圈为箱形截面拱圈的提载技术综合应用到实际工程中。根据双曲拱桥结构形式的受力特点与现场检测结果讨论了沙滩大桥各部位的病害成因、并结合理论计算分析结果,对大桥拓宽提载技术进行了研究,并介绍了“预制安装整体式桥面板”这一新技术在施工工艺上的特殊性和注意事项。
Based on the widening of the loading project of Xiujiang Beach Bridge in Jiangxi Province, the paper proposes to extend the technology of prefabricated monolithic bridge deck by longitudinal bridge and to combine the technology of carrying technology with the cross-arch double-arch arch ring Applied to the actual project. According to the stress characteristics of the double-curved arch bridge structure and the on-site test results, the causes of the disease of various parts of Sandy Bay Bridge are discussed. Based on the theoretical calculation and analysis results, the widening and carrying technology of the bridge is studied, and the “ Bridge deck ”The new technology in the construction process of the particularity and precautions.