建筑结构

2008, No.298(10) 106-108

[打印本页] [关闭]
本期目录(Current Issue) | 过刊浏览(Past Issue) | 高级检索(Advanced Search)

软土地基嵌入卵石层钻孔灌注桩后压浆技术问题研究
Some problems about post-grouting design of bored pile inserted to boulder bed in soft foundation

张清华;杨益洪;何雪莲;翁丽娅;
Zhang Qinghua~1,Yang Yihong~1,He Xuelian~1,Weng Liya~2(1 Wenzhou Architectural Design and Research Institute,Wenzhou 325003,China;2 Wenzhou Geotechnical Investigation and Mapping Institute,Wenzhou 325027,China)

摘要(Abstract):

结合实际工程,对嵌入卵石层钻孔灌注桩后压浆设计、施工中后压浆方法的选择、注浆量的确定、后压浆桩的承载力计算、后压浆在超长桩中的应用等进行了研究。试验结果表明,采用后压浆时应选用桩底注浆,桩底后压浆的注浆量与桩径的平方成正比;后压浆桩端承载力可按预制桩的桩端承载力进行计算;后压浆对超长桩的承载力和沉降均有较大改善。
Based on actual projects,it carries out research on the choice of post-grouting method,grouting quantity and bearing capacity of bored pile,and the application of post-grouting in super-long pile.The experiments show that grouting under the bottom of the pile is preferred when using post-grouting,and the grouting quantity is in direct proportion to square of the diameter of the pile.The carrying capacity of the bottom of the post-grouting can be calculated according to the carrying capacity of the bottom of the prefab pile,and post-grouting can greatly improve the carrying capacity and settlement of the super-long pile.

关键词(KeyWords): 卵石层;钻孔灌注桩;后压浆;注浆量;超长桩
boulder bed;bored pile;post-grouting;grouting quantity;super-long pile

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张清华;杨益洪;何雪莲;翁丽娅;
Zhang Qinghua~1,Yang Yihong~1,He Xuelian~1,Weng Liya~2(1 Wenzhou Architectural Design and Research Institute,Wenzhou 325003,China;2 Wenzhou Geotechnical Investigation and Mapping Institute,Wenzhou 325027,China)

Email:

DOI: 10.19701/j.jzjg.2008.10.035

扩展功能
本文信息
服务与反馈
本文关键词相关文章
本文作者相关文章
中国知网
分享