怀邵衡铁路沅江特大桥水中墩基础施工方案优化  

Optimum of Construction Scheme of Pier Foundation in Water for Yuanjiang River Super-Long Bridge on Huaihua-Shaoyang-Henyang Railway

作　　者：张明刚 

机构地区：[1]中国铁建大桥工程局集团第三工程有限公司,辽宁沈阳110043

出　　处：《铁道建筑》2016年第6期48-50,54,共4页Railway Engineering

摘　　要：沅江特大桥采用(60+100+60)m连续梁、(90+180+90)m矮塔加劲斜拉连续梁孔跨结构,其中有6座连续梁桥墩基础位于水中。结合工程实际情况、工期、水文、地质等因素,参照类似工程的施工经验对大桥深水基础围堰设计施工方案进行优化,并阐述了优化方案技术难点的解决方法。优化方案利用浅滩上的卵石筑岛,从而将水中施工改为陆上施工,加快了施工进度。Ruanjiang river super-long bridge across Yuanjiang river takes （60 ＋ 100 ＋60）m continuous beams, （90 ＋ 180 ＋ 90）m low-tower cable-stayed bridge with stiffened continuous beams. Six piers supporting continuous beams are located in the water. The deep foundation construction using cofferdam was optimized according to the project situation, time, hydrological and geological conditions, and the previous construction experience. The solution to the construction difficulties was demonstrated in this paper. The pebble island facilitated the foundation construction. The transfer from deep-water construction to onshore construction contributed to shorter time.

关 键 词：桥墩基础 深水基础 围堰 优化比选 

分 类 号：U445.55[建筑科学—桥梁与隧道工程]