摘要
灌注桩采用桩端压力灌浆新技术后,能大幅度地提高基桩承载能力,减小其沉降,在工程中已得到大量应用。但大量工程实践表明,其对不同地层的适应性是不同的。本文根据某工程中钻孔灌注桩的现场试验,对桩端压力灌浆技术在卵石层中灌注桩的应用效果及其经济效益进行了分析。
The new pressure grouting technology under pile＇s tip has been introduced to bored piles for many years.It can largely improve piles bearing capacity and reduce its settlement.A lot of engineering practice has indicated that its adaptability varied in different soil layer.Based on site tests, this paper discusses the effect of pressure grouting under pile＇s tip in cobble layer and analyzed its economical and social benefit.
出处
《工程质量》
2007年第5期34-37,共4页
Construction Quality
关键词
钻孔灌注桩
桩端后压浆
承载力
卵石层
bored pile, post grouting under pile, bearing capacity, cobble layer
