襄阳市东西轴线二跨汉江特大桥主桥设计

发布时间：2018-01-09 07:15

本文关键词：襄阳市东西轴线二跨汉江特大桥主桥设计　出处：《桥梁建设》2017年01期 　论文类型：期刊论文

【摘要】：襄阳市东西轴线二跨汉江特大桥主桥为独塔混合梁斜拉桥,塔梁墩固结体系,跨径布置为(3×60+320)m。主梁采用扁平箱形混合梁,其中混凝土梁长190.5m,钢梁长309.5m,钢-混结合段长2.0m,设在主跨侧。混凝土桥塔外轮廓呈橄榄形,横桥向由2个马蹄形断面的塔肢构成,在桥塔内设动态风车结构。桥塔每个塔肢下各设1个承台,承台间设横向系梁,承台下行列式布置14根鐖2.5m钻孔灌注桩。斜拉索采用7丝鐖s15.2热镀锌钢绞线,空间扇形布置。边墩及辅助墩横桥向均设置2个矩形柱式墩,下设矩形承台,承台间设1道横向系梁,承台下接4根鐖1.8m的钻孔灌注桩。采用MIDAS Civil 2010进行结构静、动力分析,结果表明该桥结构安全且布置合理。
[Abstract]:The main bridge of Xiangyang East-West axis two-span Hanjiang River Bridge is a cable-stayed bridge with single-tower hybrid beam, with a consolidation system of tower girder piers, with a span arrangement of 3 脳 60 320m. The main beam adopts a flat box-shaped hybrid beam. The length of concrete beam is 190.5 m, the length of steel beam is 309.5 m, and the length of steel-mixing section is 2.0 m, which is located in the main span. The outer contour of concrete bridge tower is olive shape. The transverse bridge is composed of two tower legs with horseshoe section and a dynamic windmill structure is arranged in the tower. Each tower has a cap and a transverse tie beam is arranged between the caps. Under the cap, 14 cast-in-place piles with 2.5 m bore holes are arranged. The stay cables are made of 7 wire / s 15.2 hot-dip galvanized steel strands, with space sector arrangement. Two rectangular column piers are arranged in the lateral piers and auxiliary piers. There is a rectangular cap with a transverse tie beam between the cap and four bored piles with 1.8 m under the cap. The structural static and dynamic analysis is carried out with MIDAS Civil 2010. The results show that the structure of the bridge is safe and reasonable.
【作者单位】：中国市政工程西北设计研究院有限公司;上海同济城市规划设计研究院;
【分类号】：U448.27
【正文快照】： 2.上海同济城市规划设计研究院,上海200092)1工程概况襄阳市东西轴线二跨汉江特大桥是襄阳市东西轴线工程的控制性节点,是汉江左汊的越江工程。大桥自西侧鱼梁洲污水处理厂起,依次跨越鱼梁洲侧汉江大堤、汉江、东津侧汉江大堤、汉江大道,止于楚山大道前,桥梁总长1 835m。该桥

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