2×228m钢管拱整体架设方案

Integral Erection Scheme for 2×228-m Span Steel Tube Arches

介绍南昌生米大桥主桥钢管拱采用的门式膺架半拱整体吊装的新颖施工方法。对主拱架设主要施工设备等作了说明,阐述主拱大段拼装、提升、合龙的施工过程,为以后类似桥梁施工提供新的途径。

This paper presents the novel construction method of integral lifting of half a steel tube arch with giant gantry for erection of the 2×228-m span steel tube arches of the main bridge of the Shengmi Bridge in Nanchang, illustrates the principal construction equipment used for the erection of the arches, and also describes the construction process of arch segment assembling, hoisting and arch closing. The construction method herewith provides a new way for construction of similar bridges in the future.