北京地铁6号线东四站洞桩法施工工艺  

The PBA Construction Technology IN Dongsi station of Beijing metro line 6

作　　者：欧阳艳[1] 高书军 

机构地区：[1]陕西铁路工程职业技术学院,陕西渭南714000 [2]隧道集团二处,河北燕郊065201

出　　处：《福建建设科技》2011年第3期66-67,共2页Fujian Construction Science & Technology

摘　　要：洞桩法又称为PBA工法(pile-桩,beam-梁,arc-拱),是浅埋暗挖法的一种。以"先护后挖,及时支撑"为原则,先开挖小导洞,再施做桩、梁、拱作为支护系统将各个导洞连接起来。本文针对具体实例就洞桩法的施工工艺进行探讨,着重介绍了洞桩法的施工总方案,导洞和扣拱施工的关键工艺。The hole pile method is also called PBA process,it is a kind of shallow tunneling.Based on principle of ＂firstly protecting than digging,timely supporting ＂,small drift is firstly excavated,then piles,beams and arch are constructed as supporting system to connect each drift.Based on practical examples,this paper discusses the hole pile construction technology,emphatically introduces the total construction method of hole pile and the key technique of drift and buckle arch.

关 键 词：PBA 导洞 扣拱 

分 类 号：U231.3[交通运输工程—道路与铁道工程]