厦门市仙岳路多孔连续箱梁顶升关键技术研究

Key technology for porous continuous box girder jacking up in Xianyue Road construction of Xiamen

厦门市仙岳路改造为全程高架快速路工程施工中,为避免拆旧桥带来的负面社会影响,充分利用原桥结构,对部分桥梁顶升改造,该措施工期短、经济效益好。厦门市仙岳路上跨湖滨东路高架桥第一联为4×35 m预应力砼连续箱梁,该联上部结构总重8 000 t,顶升最大高度达3.6 m,顶升施工及监控难度大,需对各顶升关键技术进行详细分析才能保证工程的顺利进行。

In construction of expressway project of Xianyue Road in Xiamen, in order to avoid the negative social impact of the demolition of the old bridge, make full use of the original bridge structure, on the part of the bridge girder lifting transformation, which has advantages of short construction period and good economic benefits. The first joint of the viaduct is 4 × 35m prestressed concrete continuous box girder, the total weight of its upper part is more than 8,000 tons, the maximum height is up to 3.6 m, which is difficult for construction and monitoring, and detailed analysis for the key technology is needed in order to ensure the smooth progress of the project.