旋喷搅拌加劲锚桩对软土基坑变形控制效果的分析  

Analysis of deformation controlling effect by jet mixing anchor in foundation pit in soft soil

作　　者：毕平均 刘全林 

机构地区：[1]上海强劲地基工程股份有限公司,上海200233

出　　处：《建筑结构》2013年第S2期616-620,共5页Building Structure

摘　　要：旋喷搅拌加劲锚桩是将大直径水泥土桩体与传统锚索相结合而成的一种新型工艺,主要用于淤泥土、黏性土、砂性土中的基坑支护。该工艺克服了传统锚索直径小、锚固力低的缺点,代之以大直径的水泥土搅拌桩体,从而使锚索的承载力大大提高,基坑位移控制效果更加理想。结合某工程实例,突出介绍旋喷搅拌加劲锚桩的施工工艺特点以及基坑变形控制效果,以期为工程应用提供借鉴作用。The jet mixing anchor,a new technology combines large-diameter cement-soil pile with traditional anchor,is usually applied in the foundation excavation in silt,clay,sand etc.Being short on diameter and anchorage capacity,the traditional anchor was replaced by large-diameter jet mixing anchor,which enhanced the anchorage capacity and the displacement controlling effect.Combined an engineering case,the characteristic and application effect of the jet mixing anchor is to be analyzed in this essay,then to provide a certain reference for engineering applications.

关 键 词：基坑工程 旋喷搅拌加劲锚桩 大直径锚索 传统锚索 蠕变 群锚效应 

分 类 号：TU472[建筑科学—结构工程]