投石压浆无砂混凝土小桩施工工艺  

CONSTRUCTION TECHNIQUE OF STONE-THROWN SAND-FREE SMALL GROUTING CONCRETE PILE

作　　者：王念念[1] 谢会雪 程欣荣 崔延昆[1] 

机构地区：[1]北京城建集团工程总承包部,北京100088

出　　处：《建筑技术》2011年第3期221-223,共3页Architecture Technology

摘　　要：邯郸文化艺术中心深基坑支护工程中,采用投石压浆无砂混凝土小桩与土钉墙结合进行边坡防护。该桩使用反循环钻机成孔,达到设计深度后下注浆管,回填骨料,压力灌注水泥浆,形成素混凝土桩,可降低成本,缩短工期,适用于地况复杂、场地窄小的基坑护坡。Stone-contained sand-free small grouting concrete piles anr used in deep foundation pti supporting engineering of Handan Culture and Arts Center. Reverse circulation drilling method is adopted for boring, and grouting tube is set after drilling to the design depth before aggregate backfillin and pressure cement grouting, to form plain concrete pile. This method could save construction cost and reduce construction period, and it is applicable to foundation pit slope protedtion in narrow construction site with complex geographical conditions.

关 键 词：基坑工程 微型桩 压力灌浆 

分 类 号：TU753.3[建筑科学—建筑技术科学]