土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (1): 118-123.

• 专题论述 • 上一篇    下一篇

搅拌桩复合地基沉降因素及计算方法研究进展

韦全余1，石 军2，冯哲源3，李洪亚3，华瑞平4   

  1. (1.连云港市建设工程质量监督站，江苏连云港 222000；2.军委后勤保障部军事设施建设局设施维护处，北京100842；3.陆军工程大学爆炸冲击防灾减灾国家重点实验室,南京 210007；4.中国人民解放军32182部队，北京 100042)
  • 收稿日期:2023-01-29 修回日期:2023-02-01 出版日期:2023-02-24 发布日期:2023-03-08
  • 作者简介:韦全余(1974-)，男，高级工程师，研究方向为道路与桥梁施工技术及工程管理。

Research Progress on Settlement Factors and Estimation Methods of Composite Foundations Formed by Soil-Cement Mixed Columns

WEI Quanyu1, SHI Jun2, FENG Zheyuan3, LI Hongya3， HUA Ruiping4   

  1. (1.Lianyungang Construction Project Quality Supervision Station, Lianyungang 222000；
    2.Department of Facility Maintenance Division, Military Installations Construction Bureau of Logistic Support, Central Military Committee, Beijing 100842；
    3.State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007；
    4.Unit 32182 of PLA, Beijing 100042)
  • Received:2023-01-29 Revised:2023-02-01 Online:2023-02-24 Published:2023-03-08

摘要： 搅拌桩技术具有原位土利用率高、搅拌施工对环境影响小和造价低等优势，在地基处理中得到广泛应用。水泥土搅拌桩复合地基的沉降影响因素众多，荷载传递规律和沉降量计算方法等方面还没有成熟的、被普遍接受的设计理论与方法。有效桩长和最佳桩土模量比是控制搅拌桩复合地基沉降的关键因素，而桩间距与置换率的选取则需综合考虑工程安全性及建设成本。此外阐明桩体的荷载传递规律，并对比复合地基沉降主流计算方法。


关键词: 搅拌桩复合地基, 沉降影响因素, 荷载传递, 沉降计算

Abstract: The soil-cement mixed column method has the advantages of high utilization rate of the in-situ soil, less environmental impact of in the mixing installation and lower construction cost. This method is widely used in the ground improvement projects. There are many factors affecting the settlement of the soil-cement mixed column composite foundations. The research on the load transfer mechanism and the settlement estimation method is not well-developed, and there is no matured and widely accepted design methodology available. The effective column length and the optimal column-soil modulus ratio are the key factors to control the settlement of the composite foundation, while the selection of the column spacing and the replacement ratio needs to systematically consider the engineering safety and the construction cost. In addition, the load transfer mechanism of the column is validated, and the major settlement estimation methods of the composite foundation are compared in this paper.


Key words: Soil Cement Mixed Column Composite Foundations, Settlement Influencing Factors, Load Transfer, Settlement Estimation

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