郭克诚，陈  磊
（武汉谦诚岩土工程有限责任公司，武汉430062）

[摘要] 近年来，水泥砂浆搅拌桩应用在软土地基加固工程中，在不同地质条件下其设计参数和施工工艺不同。介绍了多向水泥砂浆搅拌桩加固高铁路基软基的技术原理、设计、施工设备改造、施工工艺、质量控制、检测。新建向莆铁路南昌枢纽工程试验段路基地基加固工程，对水泥砂浆搅拌桩的设计参数和施工工艺进行现场试验，取得了合理的施工方案和技术参数。结合该多向水泥砂浆搅拌桩复合地基工程，总结多向水泥砂浆搅拌桩在高铁地基加固中的研究与应用，对类似工程提供了参考建议。
[关键词] 多向水泥砂浆搅拌桩；复合地基承载力；无侧限抗压强度；地基加固

Experiment research and application about multi-direction cement sand mixing pile in high-speed railway ground enforced project
Guo Kecheng, Chen Lei
( Wuhan Qiancheng Geotechnical Engineering Co., Ltd., Wuhan 430062, China)

Abstract: In recent years, cement sand mixing piles are used in soft ground enforced engineering. It requests different design and technological parameter according to different geology factor. This article introduces technology thesis, design method, equipment, work process, quality controlling and detection of multi-direction cement sand mixing pile, using in high-speed railway soft-ground enforced engineering. This article introduces field experiment and application about multi-direction cement sand mixing pile in new Xiang-Pu Railway Nanchang Hinge project. Using reasonable program and technology parameter, this project gets a good efficacy. Base on this project, this article summarizes the research and application about multi-direction cement sand mixing ground in high-speed railway ground treatment, and give reference to similar project.
Keywords: multi-direction cement sand mixing pile; mixing ground bearing capacity; non-side-limit pressive strength; ground enforcing