大直径刚性桩桩网复合地基在储罐基础中的应用

詹金林; 梁永辉; 水伟厚

大直径刚性桩桩网复合地基在储罐基础中的应用 English Version

上海现代建筑设计集团申元岩土工程有限公司，上海 200040

详细信息

作者简介:
詹金林 (1977 – ) ，男，陕西商洛人，硕士，工程师，从事基础工程与软基处理研究、设计、检测工作。

中图分类号: TU47
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出版历程
- 收稿日期: 2011-04-28
- 发布日期: 2011-11-30

Application of large-diameter rigid pile-net composite foundation in tank base

Shenyuan Geotechnical Co., Ltd., Shanghai Xiandai Architectural Design Group, Shanghai 200040, China

摘要

摘要: 首次在大型储罐基础下采用了大直径刚性桩桩网复合地基设计，对大直径刚性桩桩网复合地基的设计、数值模拟分析、优化设计进行了详细的论述。根据计算分析，采用刚性桩桩网复合地基可大幅度减小基础的沉降、不均匀沉降，对储罐基础进行充水预压沉降监测，揭示采用三维有限元计算结果同实际测试结果较为接近。在储罐下桩顶承台上、桩间土安装土压力计，根据实测值得出桩土分担比。采用大直径刚性桩桩网复合地基，相对传统桩筏基础节省投资 60% 以上，节省工期 50% 以上。
- 地基处理 /
- 桩–网复合地基 /
- 大直径刚性桩 /
- 桩承式路堤 /
- 优化设计
Abstract: The pile-net composite foundation with large diameter rigid piles is used in the tank for the first time. The design, simulation and optimization of the pile-net composite foundation are discussed. According to the calculation of the rigid pile-net composite foundation, it can substantially reduce the settlement and differential settlement of the tank base. On the basis of the preloading settlement monitoring, it is revealed that the results of three-dimensional finite element method are close to the actual test results. Soil pressure cells are installed on the top of the pile bearing stage and in soil between piles. According to the actual monitoring, the sharing ratio between piles and soil is calculated. Large-diameter rigid pile-net composite foundation, compared to the traditional pile-raft foundation, can save more than 60% of investment and more than 50% of time.
- ground treatment /
- pile-net composite foundation /
- large-diameter rigid pile /
- pile-supported embankment /
- optimal design

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参考文献(5)

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[4]	王俊林 , 肖昭然 , 刘志国 . 桩–网复合地基承载及变形特性的三维数值分析 [J]. 水运工程 , 2007(8): 112 – 116. (WANG Jun-lin, XIAO Zhao-ran, LIU Zhi-guo. Pile-net composite foundation under 3-D condition[J]. Port & Waterway Engineering , 2007(8): 112 – 116. (in Chinese)))
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