Development of Stone Column Compound Foundation and Its Application in Hydraulic Projects
Development of Stone Column Compound Foundation and Its Application in Hydraulic Projects
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发表时间：
2001
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通讯作者：
W. Bao
中科院分区：
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作者：
W. Bao
介绍了碎石桩的发展历程，分析了碎石桩加固软土地基的机理。重点介绍了大型碎石桩加固超软土地基河岸边坡的实用性。通过对工程机械的现场试验、控制参数和质量检测，得出碎石桩的剩余系数应在1.4~1.5以上，负载电流为50~55A，振动时间为5~15s。现场试验表明，该碎石桩施工简单、快捷、价格低廉、质量容易控制。最后给出了现场级配分析、抗剪试验和大尺寸混凝土加载试验的结果。结果表明，大体积混凝土加固地基抗剪强度是有效的。
The development of stone column is introduced, and its mechanism to reinforce the soft soil foundation is analyzed. The practicality of the reinforcement of river bank slops of super soft soil foundation with large size stone column is presented as a focal point. Based on the on site experiments on construction machinery, control parameters, and quality test, some values are derived: the surplus coefficient of stone column must be over 1.4 to 1.5 , the load current is 50～55A, and the vibration time is 5～15s. The on site experiments show that the stone column is of simple and fast construction, low price, and easy quality control. Finally the results of the on site grading analysis, shear experiments, and loading tests of large size concrete are presented. The results show that the large size concrete is effective in the reinforcement of the shear strength of foundations.