长江上游悬索桥浅滩区钢箱梁架设施工技术

发布时间：2018-01-09 14:16

本文关键词：长江上游悬索桥浅滩区钢箱梁架设施工技术　出处：《世界桥梁》2017年03期 　论文类型：期刊论文

【摘要】：重庆市江津中渡长江大桥主桥为主跨600m钢箱梁悬索桥,位于长江上游,北岸主跨浅滩区为莲花石实景保护文物,不能爆破及挖掘,北岸浅滩区钢箱梁共22个节段,在枯水期运输钢箱梁时不能保证运梁驳船按时供梁。对设置围堰蓄水方案、运输船底部设置浮运气囊方案、浮吊船转运方案和拖船转运方案进行对比分析,考虑施工难易程度、对环境影响、经济性等因素,确定钢箱梁采用拖船转运方案架设。施工时,运输船将北岸浅滩区钢箱梁运输至南岸缆载吊机正下方后进行抛锚定位,缆载吊机将待转运梁段提起,驶离钢箱梁运输船,拖船驱使小型驳船至南岸缆载吊机正下方将钢箱梁装于小型驳船上,拖船驱使小型驳船按照事先选择的航线行驶,将钢箱梁运输至北岸缆载吊机正下方进行起吊安装。
[Abstract]:The main bridge of Jiang Jin Zhongdu Yangtze River Bridge in Chongqing is a 600m steel box girder suspension bridge, which is located in the upper reaches of the Yangtze River. There are 22 sections of steel box girder in the north bank shoal area. When transporting steel box girder in the dry season, the beam can not be guaranteed to supply the beam on time. For setting up cofferdam water storage scheme, floating airbag scheme is set at the bottom of the carrier. By comparing and analyzing the transfer scheme of floating crane and tugboat, considering the factors of construction difficulty, environmental influence and economy, it is determined that the steel box girder should be set up by tugboat transfer scheme. The ship will ship the steel box girder in the north shore shoal area to the south bank cable crane directly below the anchor positioning cable crane will be transferred to the girder section lifted away from the steel box girder transport ship. Tugboats drive small barges to the south shore cable crane directly below the steel box girder mounted on small barges tugs drive small barges according to the route of choice. Transport the steel box girder to the north shore cable crane for lifting installation.
【作者单位】：中建六局桥梁有限公司;
【分类号】：U445.4;U448.25
【正文快照】： 1工程概况重庆市江津中渡长江大桥主桥为主跨600 m的悬索桥(见图1),桥面宽33m,设置双向6车道。主桥加劲梁采用正交异性板流线型扁平钢箱梁(见图2),标准梁段长12m,梁高3m,宽33m,全桥共分主跨50个节段和南边跨5个节段,最大节段梁重约307t。北边跨为现浇混凝土箱梁。图1主桥立面

【相似文献】