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（中國(guó)航空規(guī)劃建設(shè)發(fā)展有限公司，北京 100120）
［摘要］提出了帶鋼支撐的水泥土攪拌樁-鋼筋混凝土灌注樁連拱基坑支護(hù)方案，充分利用水泥土攪拌樁耐壓、鋼筋混凝土灌注樁可受彎的材料特性，通過拱將兩者結(jié)合起來，在灌注樁的中部設(shè)鋼支撐。分析了水泥土攪拌樁、鋼筋混凝土灌注樁、鋼支撐的受力方式，給出計(jì)算方法。理論及工程實(shí)踐證明帶鋼支撐的水泥土攪拌樁-鋼筋混凝土灌注樁連拱基坑支護(hù)體系合理、有效和經(jīng)濟(jì)。
［關(guān)鍵詞］拱形結(jié)構(gòu)；水泥土攪拌樁；鋼支撐；基坑支護(hù)
Design and construction of arched pit supporting system with cement mixed piles and reinforcing concrete piles
Wang Jun, Li Wenqi(China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)
Abstract:The arch pit supporting system with soil cement mixed pile-reinforcing concrete pile is introduced. Taking advantages of the pressure concrete pile and flexible reinforcing concrete pile,
the system combines the two by putting the steel supporting structure inside the pile to detract the pressure on soil cement mixed pile. The loaded modes of soil cement mixed pile, reinforcing concrete pile and the steel supporting structure are analyzed, and the calculation method is given out. It is proved that the pit supporting system  is feasible,effective and economical.
Keywords:arch; soil cement mixed pile; steel supporting structure; pit supporting system
作者簡(jiǎn)介：王軍,高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：whm2003128@yahoo.com.cn。
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