上海地区钻孔灌注桩后注浆设计要点.pdf
文本预览下载声明
上海地区钻孔灌注桩后注浆设计要点
洪文明
( ( ) , 200092)
同济大学建筑设计研究院 集团 有限公司 上海
: ,
摘 要 上海地方地基基础设计规范关于灌注桩后注浆设计条文较少 按照全国基础设计规范进行上海
。 , ,
地区灌注桩后注浆设计又存在偏差 根据上海地区灌注桩后注浆的工程实践 结合已有研究成果 总结了上
、 。
海地区灌注桩后注浆的注浆方式选择 注浆量及单桩承载力确定以及其他注浆注意事项 最后对后注浆灌
注桩经济性进行介绍。
: ; ; ;
关键词 单式注浆 复式注浆 注浆量 单桩承载力
KEY POINTS OF THE DESIGN OF POST GROUTING FOR
CAST-IN-SITE PILE IN SHANGHAI
Hong Wenming
(The Architectural Design and Research Institute of Tongji University ,Shanghai 200092 ,China)
Abstract :Design provisions of the post grouting for cast-in-site pile are less in Shanghai foundation design code ,yet
theres some deviation by using national foundation design code to design post grouting in Shanghai area. Based on the
engineering practice and the existing research results of post grouting for cast-in-site pile in Shanghai area ,some key
points of the design of post grouting for cast-in-site pile are summarized in Shanghai area ,including post grouting
mode selection ,quantity of grouting and calculation of bearing capacity of single pile etc. Finally ,the economy of post
grouting for cast-in-site pile is disccused.
Keywords :tip grouting ;side and tip grouting ;quantity of grouting ;
bearing capacity of single pile
0 引 言 1 后注浆加固机理
由于预制桩存在挤土效应而受环境制约以及地 、
后注浆通过对桩底 桩侧一定范围土体渗入
下室较深时预制 , ( )、 ( ) ( )
显示全部