铁道建筑技术
鐵道建築技術
철도건축기술
RAILWAY CONSTRUCTION TECHNOLOGY
2012年
3期
92-95
,共4页
预应力锚索%深基坑%支护施工
預應力錨索%深基坑%支護施工
예응력묘색%심기갱%지호시공
prestressed anchor cable%construction deep foundation pit
北京地铁14号线郭庄子站至大井站区间风井兼轨排井明挖深基坑,最大开挖深度25.5 m,地质复杂,地层自上而下为人工堆积,砂层,卵石层,漂石层,基坑采用全套筒跟进钻孔锚索外支撑支护形式。锚索施工是支护施工的关键,从钻孔注浆,锚索制作安装张拉等方面进行介绍。
北京地鐵14號線郭莊子站至大井站區間風井兼軌排井明挖深基坑,最大開挖深度25.5 m,地質複雜,地層自上而下為人工堆積,砂層,卵石層,漂石層,基坑採用全套筒跟進鑽孔錨索外支撐支護形式。錨索施工是支護施工的關鍵,從鑽孔註漿,錨索製作安裝張拉等方麵進行介紹。
북경지철14호선곽장자참지대정참구간풍정겸궤배정명알심기갱,최대개알심도25.5 m,지질복잡,지층자상이하위인공퇴적,사층,란석층,표석층,기갱채용전투통근진찬공묘색외지탱지호형식。묘색시공시지호시공적관건,종찬공주장,묘색제작안장장랍등방면진행개소。
The form of sleeve hole to follow up anchor and supporting is explicating in the open-cut deep foundation pit section of Guozhuangzi to Dajing of Line 14 for Beijing Subway with a maximum excavation of 25.5m characterized by complex geology with formation of top-down for artificial pile,sand,gravel layer,boulder layer.This paper introduces the key anchor cable construction including drilling and grouting,cable production installation tensioning etc.
