管桩在津滨高速改扩建工程中的应用

管桩在津滨高速改扩建工程中的应用 English Version

详细信息

Tianjin Municipal Engineering Design & Research Institute, Tianjin 300201, China

摘要: 依托津滨高速改扩建工程，计算了管桩复合地基的地基承载力，重点对太沙基理论公式进行推导验算，并对太沙基理论公式在管桩复合基础应用中做了修正，通过对典型单元体的分析，推导了表征刚性基础下复合地基性状的桩土应力模型，最后将工程设计方案和本文方法分析的结果进行对比，二者基本一致，说明本文方法能较好反映天津地区管桩处理地基的工作性状。进一步补充了管桩在复合地基中的应用，并对此模型做进一步展望。
- 津滨高速 /
- 太沙基理论公式 /
- 管桩复合地基
Abstract: Based on the reconstruction project of Tianjin-Tanggu Expressway, the subgrade bearing capacity of composite foundation with pipe piles is calculated. The Terzaghi's theory is verified, and the Terzaghi's theoretical formula is modified for application in composite pipe piles. Through the analysis of the typical elements, the stress model of pile-soil under rigid foundation is derived. Finally, it is demonstrated that the results from this solution are in accordance with the design ones of a project. So the proposed method can reflect the working behaviors of foundation treatment of pipes pile in Tianjin area. It supplements the application of composite foundation with pipe piles and prospects for the model.
- Tianjin-Tanggu Expressway /
- Terzaghi's theoretical formula /
- composite foundation pipe pile

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