王松江, 周汉斌. 2012: 强夯法处理深厚湿陷性黄土地基对比试验研究. 工程地质学报, 20(6): 1028-1035.
    引用本文: 王松江, 周汉斌. 2012: 强夯法处理深厚湿陷性黄土地基对比试验研究. 工程地质学报, 20(6): 1028-1035.
    WANG Songjiang, ZHOU Hanbin. 2012: COMPARATIVE EXPERIMENTAL RESEARCH ON DYNAMIC CONSOLIDATION METHOD FOR TREATMENT OF COLLAPSIBLE LOESS FOUNDATION. JOURNAL OF ENGINEERING GEOLOGY, 20(6): 1028-1035.
    Citation: WANG Songjiang, ZHOU Hanbin. 2012: COMPARATIVE EXPERIMENTAL RESEARCH ON DYNAMIC CONSOLIDATION METHOD FOR TREATMENT OF COLLAPSIBLE LOESS FOUNDATION. JOURNAL OF ENGINEERING GEOLOGY, 20(6): 1028-1035.

    强夯法处理深厚湿陷性黄土地基对比试验研究

    COMPARATIVE EXPERIMENTAL RESEARCH ON DYNAMIC CONSOLIDATION METHOD FOR TREATMENT OF COLLAPSIBLE LOESS FOUNDATION

    • 摘要: 针对某深厚湿陷性黄土地基,分别采取了不同夯击能(8000kNm、6500kNm和3000kNm),不同的夯点间距(1.6D、2D和2.5D)及不同的夯锤底面积(5m2, 7m2)等5种方案组合进行了强夯处理对比试验。处理前后分别进行了标准贯入、静力触探、载荷试验及渗透试验等一系列原位及室内试验,结果表明:各强夯方案对地基土干重度、承载力、压缩性、湿陷性及渗透性等性质均有较大影响。各方案有效加固深度,随着施工工艺和参数的不同有所差别。对强夯震动波水平加速度进行了测试,对其衰变规律做出来了初步判定。试验结论可以为类似工程的设计施工提供借鉴。

       

      Abstract: This paper investigates the collapsible loess foundation with contrast experiments on foundation treatment by dynamic consolidation. Five combination schemes are adopted and consist of different tamping energies(8000kNm, 6500kNm and 3000kNm) and different grid spacing(1.6D, 2D and 2.5D) and different bottom areas(5m2, 7m2).Before and after the experiment, a series of in-situ and laboratory tests are performed. They include standard penetration tests, static touch tests, static load tests and permeability test. Through these tests, the influence of the dynamic consolidation on the soil properties including dry density, bearing capacity, compressibility, collapsibility and permeability is analyzed. The effective depth of improvement of each project is different according to the choosing of construction technics and parameters of the dynamic consolidation. Influence of vibration caused by dynamic consolidation to adjacent buildings is analyzed, which make an example for analogic engineering construction in the future.

       

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