FG桩处理风积砂土地基承载性状研究
Study on the bearing properties of aeolian sand Foundation Treated with CFG Piles
以CFG桩处理榆林地区风积砂土地基为例，用有限差分软件FLAC3D模拟了CFG单桩、复合地基的承载性状，与现场载荷试验吻合较好；分析了不同桩体截面、褥垫层参数及桩长等因素对单桩及复合地基承载性状的影响。结果表明：合理的褥垫层厚度对桩土应力比调节作用显著，CFG桩复合地基存在临界桩长，单桩摩擦桩的性状明显，且现有理论计算结果偏于安全；CFG桩复合地基能有效优化风积砂土的承载力性状，从而使风积砂土承载力提高。
he bearing properties of CFG pile and composite foundation were studied using finite difference software FLAC3D based on the CFG pile treated foundation in YuLin.The results agree well with in-situ load tests. The influence of single pile and composite foundation load-bearing properties under different Pile cross section, cushion parameter sand pile length were analyzed. The results showed that the thickness of cushion layer has a significant influence on the stress ratio of pile-soil. The CFG pile has a critical length as a friction type pile. The theory results were conservative. CFG pile composite foundation can enhance the bearing capacity by optimizing the properties of wind-blown sandy soil.
郅彬、赵高文、李玉根、郑文、刘光秀
工程基础科学水工材料水利工程施工
FG桩风积砂承载性状桩土应力比
FG PileAeolian-sandload-bearing propertiesPile-Soil Stress Ratio
郅彬,赵高文,李玉根,郑文,刘光秀.FG桩处理风积砂土地基承载性状研究[EB/OL].(2016-08-26)[2025-08-17].http://www.paper.edu.cn/releasepaper/content/201608-163.点此复制
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