双排桩支护结构的应用研究

深基坑双排桩支护是近几年发展起来的一种新型的支护结构,与其它支护结构体系相比较,双排桩支护形式具有良好的侧向刚度,可有效限制支护结构的侧向变形,在工程中已得到广泛的应用。本文分析了双排桩支护结构内力及变形的影响因素,阐述了在深基坑支护中所体现的优良性能,提出了控制基坑变形的方法。并且针对双排桩支护结构在某高铁线基坑工程中的实际应用,说明双排桩的支护设计方法和施工方便、不用设置横向支点、挡土结构受力条件好、保持基坑稳定、施工安全的优点,并取得了良好的经济效应。

Application research of double-row piles retaining structure

A new type of supporting structure,double-row piles of deep foundation pit supporting has been developed in recent years,compared with other supporting structure system,double row pile is a good support form with better lateral stiffness,which can effectively limit the lateral deformation of retaining structure,and it has been widely applied in engineering.In this thesis the internal force and deformation factors of double-row piles retaining were analyzed,the excellent performance was explaned,then the method of control excavation deformation has proposed.By applyny double row pile retaining structure for a high-wire foundation in the practical application of engineering,it showed the advantages such as support double pile design and construction is of convenience,do not set the horizontal pivot,the force retaining structure and good conditions to keep pit stability,and the advantages of construction safety,and it achieved good economic effect.