
泰州大桥悬索主桥钢箱梁吊装施工顺序的确定
Determination of lifting sequence of steel box girders of suspension main bridge of Taizhou Bridge
Wang Jun1、Liang Jinda2
泰州大桥是世界上首座超千米的三塔两跨悬索桥,主跨为2×1 080 m,中塔采用纵向“人”字形、横向门式框架型钢塔,边塔采用门式框架型混凝土塔,加劲梁为扁平流线型钢箱梁结构,全桥共136片钢箱梁,总重约33 426 t。通过分析钢箱梁吊装顺序对结构体系和施工难度的影响,确定了三塔悬索桥合适的钢箱梁吊装顺序。
Taizhou Bridge is the first three-tower two-span suspension bridge with spans over 1 000 m in the world. Its main spans are 2×1 080 m; the middle tower is a steel frame with longitudinal herringbone shape and lateral gate shape; the side towers are gate shaped concrete frames; the stiff girder consists of flat streamline steel box girders, with a total of 136 steel box girders of about 33 426 t for the whole bridge. This article determines the proper lifting sequence of steel box girders of this threetower suspension bridge by analyzing the effect of steel box girders lifting sequence on structural system and difficulty in construction .
three tower two pan suspension bridge / steel box girder / lifting sequence
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