摘要
五峰山长江大桥北锚碇沉井平面尺寸为100.7m×72.1m、高56m,平面尺寸位居世界第一。仅采用取土下沉、排水助沉、压重助沉等工艺,很难将沉井精准下沉到位。五峰山大桥沉井最后9m下沉,采取空气幕加取土下沉工艺。对空气幕布置、使用、设备布置及对土的侧摩阻力影响做详细分析。
The plan dimension of the North Anchorage caisson of Wufeng Mountain Yangtze River Bridge is 100.7 m x72.1 m and 56 m high,ranking first in the world.It is very difficult to precisely sink the caisson in place only by using the techniques of soil extraction,drainage and pressure.The final 9 m sinking of the caisson of Wufengshan Bridge was carried out by adding air curtain and soil.The air curtain layout,use,equipment layout and its influence on soil side friction are analyzed in detail.
作者
汪成龙
WANG Chenglong(CCCCSHEC Fourth Engineering Co.,Ltd.,Wuhan,Hubei 241000,China)
出处
《施工技术》
CAS
2019年第S01期1239-1241,共3页
Construction Technology
关键词
超大型沉井
空气幕
布置
侧摩阻力
super large caisson
air curtain
arrangement
side friction
