某连续曲线钢箱梁桥受力与维护措施研究

Study of Stress and Maintenance Measures for a Continuous Curved Steel Box Girder Bridge

为了研究弯箱梁桥抗倾覆稳定性,探讨大跨连续曲线钢箱梁桥的维护措施,以某三跨连续曲线钢箱梁匝道桥为工程背景,应用MIDAS CIVIL及ANSYS有限元软件,参考相关规范,对全桥进行抗倾覆验算及检修孔局部应力分析,介绍了大跨连续曲线钢箱梁桥运营维护中应注意的要点,提出了在桥梁设计期即考虑采用相应构造措施便于后期维护的观点。研究成果可供工程设计及运营维护参考。

In order to study the stability against overturning of the curved box girder bridge, the article discusses the maintenance measures for the long-span continuous curved steel box girder bridge. Taking a three-span continuous curved steel box girder ramp bridge as the engineering background and referring the relative regulations, the finite element software of MIDAS CIVIL and ANSYS are applied to carry out the checking computation against overturning of the whole bridge and the local stress analysis of manhole. The article introduces the essentials for attention in the operation and maintenance of long-span continuous curved steel box girder bridge, and puts forward the viewpoint of considering the relative structural measures in the bridge design period so as to be convenient for the next maintenance. The study result can be referred for the engineering design and operation maintenance.