大直径劲性搅拌桩在黏土地区中的应用

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摘  要：近年来，桩基础逐渐向大直径、超长桩基发展，劲性搅拌桩较同参数灌注桩，承载力显著提高，应用前景广阔。文章基于天津黏土地区，通过现场试桩试验，对劲性搅拌桩在施工中的关键工艺参数进行研究，并对其成桩质量及承载力进行检验，为大直径劲性搅拌桩在类似地质中的设计、施工提供借鉴。

关键词：劲性搅拌桩;黏土;施工工艺;承载力

中图分类号：TU753.3    文献标志码：A 文章编号：2095-2945（2021）19-0170-03

Abstract： In recent years， the pile foundation has gradually developed to a large diameter and super-long pile foundation. Compared with the cast-in-place pile with the same parameters， the concrete core mixing pile has a significantly higher bearing capacity and a broad application prospect. In this paper， based on the clay area of Tianjin， through the field pile test， the key technological parameters of concrete core mixing pile in construction are studied， and its pile quality and bearing capacity are tested. The purpose of this paper is to provide reference for the design and construction of large diameter concrete core mixing pile in similar geology.

Keywords： concrete core mixing pile; clay; construction technology; bearing capacity

我國存在众多软土地区，在其上建设铁路、高速公路、超高层建筑、水利等工程时常需要先进行地基处理。（剩余2865字）