人工挖孔与机械钻孔结合灌注桩的设计及工程应用  

Design and engineering application of the combination of digging filling piles and bored piles

作　　者：张琳[1] 李晶[1] 

机构地区：[1]深圳市华阳国际工程设计有限公司,深圳518038

出　　处：《建筑结构》2013年第12期85-88,共4页Building Structure

摘　　要：针对人工挖孔和机械钻孔两种不同工艺的施工特点、基桩成桩工艺系数、桩端阻力特征值取值及桩端扩大头截面尺寸等的区别,通过对基桩桩身轴心受压正截面承载力和桩端扩大头截面设计进行分析,提出设计过程中需要综合考虑的各种因素及施工要求,为设计人员对此类桩基设计提供处理方法及设计思路。最后,通过具体工程实例论证了文中的设计方法。It focuses on the multiple different factors of the digging filling pile and the bored pile,such as construction features,pile-forming process coefficient of foundation pile,characteristic value of resistant force of pile end,and expanding head size of pile end.By analyzing the axial compression bearing-capacity of the section of foundation pile and section design of expanding head size of pile end,various factors needed to be considered and construction requirements were put forward,which provide a reference for designers.Finally,design method presented was checked through specific engineering projects.

关 键 词：人工挖孔灌注桩 机械钻孔灌注桩 桩基 基桩 

分 类 号：TU473.1[建筑科学—结构工程]