深基坑排桩锚杆支护与稳定计算

Piles and anchor Support of Deep Foundation Pits and Stability Calculations

深基坑支护是基坑在较深空间下开挖,但空间限制不允许放坡而只能采用支护结构保护下进行垂直开挖的设计方法和施工技术。深基坑通过采用钻孔灌注桩做排桩及排桩锚杆联合支护的模式,并采用m法计算地基抗力,表明排桩支护在深基坑支护中具有施工简便,经济效益较好,对周围环境影响较小的特点。

Deep foundation pits are placed in deep underground and need to be excavated. But there is no enough room for slope or there are buildings, underground pipelines and roads nearby so only design and construction technology of vertical excavation under the protect of supporting structure works. The authors make row piles by using cast-in-situ bored piles for this deep foundation pit and row piles work with anchor support, and calculate foundation resistance by m （-） method. The result shows that row piles in deep foundation pit support are easily handled, efficient, and have little impact on the surrounding environment.