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近年来,成都东郊膨胀土地基基坑工程事故频发,多种支护结构均出现不同程度的失稳现象。局部双排桩是在充分发挥双排桩优势基础上的一种适用于膨胀土地区的具有经济、快速、节能、节材、安全等特点的支护方法,从施工效果来看,基坑的变形均在规定范围内,证明了该支护型式切实可行。
In recent years, due to the frequent occurrence of dilapidated foundation pit excavations in the eastern suburbs of Chengdu, a variety of support structures have instability of varying degrees. Local double-row piles are a kind of supporting methods which are economical, rapid, energy-saving, material-saving and safe for expansive soil area on the basis of giving full play to the advantages of double row piles. According to the construction effect, Deformation are within the specified range, proved that the support type is feasible.