大直径钻埋预应力混凝土空心桩施工工艺  

Construction technique of large diameter bored hollow pile of prestressing force concrete

作　　者：冯忠居[1] 上官兴 谢永利[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]湖南省公路管理局,湖南长沙410001

出　　处：《筑路机械与施工机械化》2005年第8期42-43,64,共3页Road Machinery & Construction Mechanization

摘　　要：阐述了大直径钻埋预应力混凝土空心桩的特点与施工工艺,该桩型克服了现在常用的混凝土灌桩与预制桩存在的缺陷,确保了桩基础工程质量,且用单桩代替群桩基础,承载力大大提高,经济效益显著。The paper presents the feature and construction technique of large diameter bored hollow pile of prestressing lorce concrete. This type of pile overcomes the shortcomings of the often used concrete pile filling so as to guarantee the construction quality of pile foundation and increase to a large degree the hearing capacity, which is of great economic profit.

关 键 词：桥梁工程 大直径空心桩 预制桩节 桩周注浆 桩底抛石 

分 类 号：U445.5[建筑科学—桥梁与隧道工程]