水运工程
水運工程
수운공정
Port & Waterway Engineering
2015年
8期
90-93
,共4页
浅滩区%基础施工%围堰形式
淺灘區%基礎施工%圍堰形式
천탄구%기출시공%위언형식
shoal area%foundation construction%cofferdam type
武汉二七长江大桥北岸6 m ×90 m副通航孔桥段位于长江Ⅲ级阶地，施工期水文地质情况变化剧烈，预定的钢套箱法基础施工工艺适应性受到了严重影响。基于对浅滩区桥梁基础施工常用围堰形式特点、适用性的分析，结合该工程实际，将基础施工工艺调整为钢板桩围堰法，达到提高施工效率、节约成本的目的。
武漢二七長江大橋北岸6 m ×90 m副通航孔橋段位于長江Ⅲ級階地，施工期水文地質情況變化劇烈，預定的鋼套箱法基礎施工工藝適應性受到瞭嚴重影響。基于對淺灘區橋樑基礎施工常用圍堰形式特點、適用性的分析，結閤該工程實際，將基礎施工工藝調整為鋼闆樁圍堰法，達到提高施工效率、節約成本的目的。
무한이칠장강대교북안6 m ×90 m부통항공교단위우장강Ⅲ급계지，시공기수문지질정황변화극렬，예정적강투상법기출시공공예괄응성수도료엄중영향。기우대천탄구교량기출시공상용위언형식특점、괄용성적분석，결합해공정실제，장기출시공공예조정위강판장위언법，체도제고시공효솔、절약성본적목적。
The bridge section of 6 m ×9 m on north secondary navigable span of Wuhan Erqi Yangtze River Bridge is located on the third terrace of the Yangtze River.As high variability in hydrogeological condition during construction period,the proposed construction method for the bridge foundation using steel boxed cofferdam is affected seriously.Based on the analysis of the form characteristics and applicability of common types of cofferdam in the shoal area and combining with the actual condition of the project,we adjust the construction method for the bridge foundation to steel sheet pile cofferdam to improve the construction efficiency and save the cost.
