水柏铁路北盘江大桥主桥设计特色

Design Characteristics of Beipanjiang River Bridge on Shuibai Railway

水柏铁路北盘江大桥主桥为 2 3 6m上承式钢管混凝土提篮拱。着重介绍该桥主桥结构设计中采用的钢管混凝土提篮拱 ,钢管拱肋上下弦管与腹杆连接节点板 ,拱肋横联Ж形横联 ,拱上刚架墩支座 ,拱顶带肋钢筋混凝土П形刚架等有特色的技术 ,以及转体施工 ,转体球铰 ,拱肋内混凝土灌筑次序 。

The main bridge of Beipanjiang River Bridge features 236m upper loading steel tubular concrete arch. An introduction is given to the unique technology used like gusset plate connecting top, bottom chord tube and web member, the Ж-shaped transverse bracing for arch rib, rigid frame pier bearing, and Π-shaped reinforced concrete rigid frame, etc, and to such designs as swinging body construction, ball hinge for swinging, concrete pouring sequence inside arch rib, and swinging hinge for temporary use at the foot of arch, etc.