（中国航空规划建设发展有限公司，北京 100120）
［摘要］提出了带钢支撑的水泥土搅拌桩-钢筋混凝土灌注桩连拱基坑支护方案，充分利用水泥土搅拌桩耐压、钢筋混凝土灌注桩可受弯的材料特性，通过拱将两者结合起来，在灌注桩的中部设钢支撑。分析了水泥土搅拌桩、钢筋混凝土灌注桩、钢支撑的受力方式，给出计算方法。理论及工程实践证明带钢支撑的水泥土搅拌桩-钢筋混凝土灌注桩连拱基坑支护体系合理、有效和经济。
［关键词］拱形结构；水泥土搅拌桩；钢支撑；基坑支护
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
作者简介：王军,高级工程师，一级注册结构工程师，Email：whm2003128@yahoo.com.cn。
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