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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。
Rotary jet stiffened stiffened anchor pile is a new technology which combines large diameter cement-soil pile with traditional anchor cable and is mainly used for foundation pit support in silt, clay and sandy soil. The method overcomes the shortcoming of small diameter and low anchorage force of traditional anchor cables and replaces them with large diameter cement-soil mixing piles so that the bearing capacity of anchor cables is greatly increased and the displacement control effect of foundation pit is more ideal. Combined with a project example, highlighting the construction process characteristics of jet grouting stiffened anchor pile and the effect of deformation control of pit, with a view to provide reference for engineering application.