上跨铁路转体桥梁设计与施工关键技术  

Key Design and Construction Techniques for Swivel Bridge across Railway

作　　者：张文进 曹文[2] ZHANG Wenjin;CAO Wen

机构地区：[1]中国华西工程设计建设有限公司,广东广州510062 [2]中铁西南科学研究院有限公司,四川成都611731

出　　处：《城市道桥与防洪》2021年第9期125-128,M0013,共5页Urban Roads Bridges & Flood Control

摘　　要：深圳市外环高速公路上跨广深铁路桥梁采用两跨预应力混凝土变高度T形刚构箱梁,跨径为2×82.5 m,桥面宽33 m,平面转体法施工,转体角度72.342°,转体结构悬臂长度为2×73.5 m,转体重量为2.4万t,刷新了中国铁路广州局集团管辖范围内转体桥梁宽度和重量记录。在该桥试转体阶段,通过称重试验、试转试验和点动试验,为正式转体提供了技术参数,确保了转体顺利进行。该桥的建成保证了深圳市外环高速公路按计划顺利通车,为我国大吨位转体桥梁设计与施工积累了宝贵经验。The two-span pre-stressed concrete variable height T-rigid frame box girder is adopted for the bridge across Guangzhou-Shenzhen Railway in Shenzhen Outer-Ring Expressway.The span is 2×82.5 m and the deck width is 33 m.The plane swivel method is used in the construction.The swivel angle is 72.342°.The cantilever length of the swivel structure is 2×73.5 m,and the swivel weight is 24000 tons,which refreshes the width and weight records of swivel bridges within the jurisdiction of China Railway Guangzhou Bureau Group.In the trial swiveling stage of this bridge,the technical parameters are provided for the formal swivel through weighing test,trial swiveling test and inch-moving test,which ensure the smooth swivelling.The completion of the bridge ensures the smooth opening of Shenzhen Outer-Ring Expressway according to the plan,and accumulates the valuable experience for the design and construction of large tonnage swivel bridges in China.

关 键 词：T形刚构箱梁桥 转体施工 上跨铁路桥梁 球铰 试转体试验 

分 类 号：U448.17[建筑科学—桥梁与隧道工程]