卢浦大桥尾端节点设计

Design of Nodes at Ends of Lupu Bridge

介绍上海卢浦大桥—拱梁组合体系中承式系杆拱桥的设计概况 ,该桥在两端横梁之间布置强大的水平拉索 ,以平衡中跨拱产生的水平推力 ,水平拉索锚固在由边跨拱肋、边跨加劲梁和端横梁刚结而成的尾端节点的锚碇上面 ,因而尾端节点在大桥的结构总体受力上具有举足轻重的地位。本文重点介绍该尾端节点的功能。

Abstract: The paper introduces the general situation of the design of Lupu Bridge ? arch-beam combination system, midheight-deck tied arch bridge. The bridge is arranged by horizontal cables between cross beams at two ends to balance the horizontal thrust from mid-span arch. The horizontal cables are anchored on the anchorages of the nodes at ends which are connected rigidly by the arch ribs on side spans, the stiffened beams on side spans and the cross beams at ends, so that the nodes at ends have a decisive position in overall forced aspect of the bridge structure. The paper mainly introduces the function, overall arrangement of the nodes at ends as well as the main points of the design and construction.