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针对目前中国在可液化地基处理中存在的问题,研究开发了一种新的液化地基处理方法——十字形振动翼共振法;结合工程实例,现场测试分析了十字形振动翼共振法施工产生的超静孔压分布规律和发生过程、施工时地表振动影响范围;分别采用孔压静力触探试验、剪切波速试验和标准贯入试验对加固前后的地基抗液化性能进行了评价。结果表明:十字形振动翼共振法可有效加固可液化地基,消除液化,且施工方便、速度快、造价低、加固深度大、对环境振动影响小,具有良好的推广应用前景。
Aiming at the problems existing in the liquefiable ground treatment in China, a new liquefied foundation treatment method, the cruciform vibration wing resonance method, is developed and studied. In combination with the engineering examples, field tests are carried out to analyze the effects of the cruise wing vibration method The law of excess pore water pressure distribution, the occurrence process and the influence range of surface vibration during construction. The anti-liquefaction properties of foundation before and after reinforcement were evaluated by the pore pressure static penetration test, shear wave velocity test and standard penetration test respectively. The results show that the cruciform vibrating wing resonance method can effectively reinforce the liquefiable foundation and eliminate the liquefaction, and has the advantages of convenient construction, high speed, low cost, large reinforcement depth and little impact on the environmental vibration, and has good popularization and application prospects.