罗涛, 杜广印, 程远, 潘皇宋, 孙长申. 2017: 十字翼共振法处理液化地基的室内模型试验研究. 工程地质学报, 25(s1): 484-489. DOI: 10.13544/j.cnki.jeg.2017.s1.075
    引用本文: 罗涛, 杜广印, 程远, 潘皇宋, 孙长申. 2017: 十字翼共振法处理液化地基的室内模型试验研究. 工程地质学报, 25(s1): 484-489. DOI: 10.13544/j.cnki.jeg.2017.s1.075
    LUO Tao, DU Guangyin, CHENG Yuan, PAN Huangsong, SUN Changshen. 2017: MODEL TEST STUDY OF TREATMENT ON LIQUEFIABLE GROUND USING RESONANT COMPACTION METHOD. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 484-489. DOI: 10.13544/j.cnki.jeg.2017.s1.075
    Citation: LUO Tao, DU Guangyin, CHENG Yuan, PAN Huangsong, SUN Changshen. 2017: MODEL TEST STUDY OF TREATMENT ON LIQUEFIABLE GROUND USING RESONANT COMPACTION METHOD. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 484-489. DOI: 10.13544/j.cnki.jeg.2017.s1.075

    十字翼共振法处理液化地基的室内模型试验研究

    MODEL TEST STUDY OF TREATMENT ON LIQUEFIABLE GROUND USING RESONANT COMPACTION METHOD

    • 摘要: 十字翼共振法作为一种新的液化地基处理方法,目前已成功运用于实际工程。为了进一步研究十字翼共振法加固可液化地基的效果和共振状态下的能量传递规律,本文进行了粉土和砂土两个不同工况下的室内模型试验研究。通过布置在土层中的传感器,监测振动过程中土层振动加速度变化。试验结果表明,十字翼共振法处理后,粉土地基和砂土地基的密实性均得到了很大提高,同时砂土地基的处理效果要优于粉土地基。共振法加固粉土地基的有效加固范围在20cm左右;加固砂土地基的有效加固范围在20~30cm。在共振状态下,振源能量的传递沿振源在横向呈递减的规律;在纵向不同土层呈现出不同的规律:粉土地基中下部土层最大、上部土层次之、中部土层最小,砂土地基中上部土层最大、下部土层次之、中部土层最小。

       

      Abstract: As a new way to deal with liquefiable foundation, resonant compaction method has already been applied to practical engineering. For the further study of treatment effect on liquefiable ground using resonant compaction method and the law of energy transfer in the resonance state, this paper mainly analyzes two different conditions of silts and sands by using laboratory model test. In this paper, the authors arrange sensors in the soil to monitor the changes of vibratory acceleration in soil layer. The test results show that the compactness of silts and sands foundation treated by resonant compaction method is greatly improved. At the same time, the effect of sands foundation is better than silts foundation. The effective reinforcement range of silts foundation using resonant compaction method is about 20cm. The effective reinforcement range of sands foundation using resonant compaction method is 20~30cm. Along the transverse direction, the energy transmission of silts and sands foundation is decreasing. Along the longitudinal direction, the energy transfer of silts foundation is the largest in the lower soil layer, is second in the upper soil layer, is the smallest in the middle soil layer. The energy transfer of sands foundation is the largest in the upper soil layer, is second in the lower soil layer, is the smallest in the middle soil layer.

       

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