荆州夏桥河大桥设计

荆州夏桥河大桥长378.6m,桥面宽26 m,为仿古17孔连续板拱桥,桥孔跨度18～26 m,桥跨从中间向两侧依次递减.拱圈为等截面钢筋混凝土板拱,采用矢跨比1∶2的圆弧拱,拱圈及承台上设置支撑墩,拱上支撑墩与桥面板整体现浇固结连接,承台上支撑墩顶设4 cm宽桥面板断缝.两侧桥台和2个中间墩设置为抗推力墩,以平衡竖向荷...

Design of Xiaqiaohe River Bridge in Jingzhou

The Xiaqiaohe River Bridge in Jingzhou is a 17-span barrel arch bridge which measures 378.6 m long and 26 m wide,with span lengths successively descending from 26 m of central spans to 18 m of end spans.The barrel arches are formed of reinforced concrete solid slabs with constant cross-section,creating rise-to-span ratio of 1∶2.The bridge features its supporting columns seating on arches and pile caps that were cast integral with the deck slabs in the field to form fixed connections.4 cm-wide in-situ deck joints were reserved on the tops of supporting columns that stand on the pile caps.The abutments and two central piers are capable of balancing the horizontal thrusts at the arch springs that are induced by vertical loads.The spandrel walls are made of reinforced skeletons and stone facades.To be integrated with the history and local culture of Jingzhou,the facades are decorated with architectural details of classical city walls,making the bridge look like a spandrel-filled arch bridge.The arches were grouped into three independent zones for the ease-of-construction,after the demolition of falsework installed for construction of arches,the construction of the spandrels began.