姚燕明  周顺华  陈  力
    （同济大学沪西校区铁建系  上海200331）

[提要]  钻孔咬合灌注桩作为一种新的基坑围护结构，克服了传统桩在基坑围护结构中防水性能差的缺点，在地铁车站基坑围护中得到采用。对该围护结构灌注桩承受的弯矩提出按刚度分配的计算方法，通过几次迭代计算后，得到各灌注桩与自身刚度成正比的弯矩值。
[关键词  ]地下铁道  基坑工程  钻孔咬合灌注桩  刚度分配

As a new pit supporting structure, clutching borehole grouting pile has overcome the deflection of traditional pile which can not prevent water leaking and is gradually used in subway pit engineering. For the bending moment calculation of clutching borehole grouting pile, a method based on rigidity distribution is proposed. After several iteration calculations, the bending moment of different piles is calculated proportional to its rigidity.
Keywords: subway; pit engineering; clutching borehole grouting pile; rigidity distribution