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广州新州至化龙快速路上的官洲河连续刚构桥,跨径布置为99 m+180 m+99 m。重点介绍该桥的建设条件、孔跨布置、结构形式以及关键构造设计,并对全桥进行静力分析。提出了防止大跨连续刚构桥出现跨中下挠以及箱梁开裂的一系列关键技术,对于同类桥梁设计有借鉴意义。
The continuous rigid frame bridge of the Guanzhou River from Guangzhou’s Newzhou to Huarong Expressway has a span of 99m + 180m + 99m. The construction conditions of the bridge, the layout of the holes, the structure and the key structural design are mainly introduced, and the static analysis of the bridge is carried out. A series of key technologies to prevent the mid-span deflection of the long-span continuous rigid frame bridge and the cracking of the box girder are put forward, which have reference significance for the similar bridge design.