Based on Caishikou Station engineering of Beijing Metro Line 4, construction plan demonstration, technology measures and test technology about pile foundation of steel pipe column are introduced.
2
以北京地铁四号线宣武门车站下穿既有地铁车站工程为例，介绍了其具体工程概况，提出了相应的设计方案。
Taking the Xuanwumen Station work in Beijing metro line 4 as example which is beneath and pass through existing subway station its general situations are introduced.
3
以北京地铁四号线宣武门车站下穿既有地铁车站工程为例，介绍了其具体工程概况，提出了相应的设计方案。
The design and construction measures for Congwenmen station pass through the existing subway nearly was presented in this paper.
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