浅谈转体桥梁设计施工的关键技术

Discussion on Key Technology of Design and Construction of Swivel Bridge

大明路跨沪蓉高速大桥为常州市天宁区大明路(城市主干道)工程的关键控制性节点。该桥主桥采用三跨预应力混凝土变截面连续箱梁,跨径组合为56 m+90 m+56 m,桥梁全宽25 m,墩顶梁高5.3 m,跨中梁高2.6 m,单个转体段长87 m,单个转体重量约1.076万t,转体施系统采用大型钢球铰平转体系。该桥的成功施工,刷新了苏南地区跨高速公路转体桥梁的重量记录,为类似转体桥梁的设计施工提供了一定参考。

Daming Road bridge across Shanghai Chengdu expressway is the key control node of Daming Road(urban trunk road)project in Tianning District,Changzhou City.The main bridge of the bridge adopts three span prestressed concrete variable cross-section continuous box girder with span combination of 56 m+90 m+56 m,full width of 25 m,pier top beam height of 5.3 m,mid span beam height of 2.6 m,single swivel section length of 87 m and single swivel weight of about 10760 tons,The rotary construction system adopts large steel ball hinge horizontal rotation system.The successful construction of the bridge refreshes the weight record of the swivel bridge across the expressway in southern Jiangsu,and provides a certain reference for the design and construction of similar swivel bridges.