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为了进一步研究碎石填芯钢管桩加固液化土地基的效果和机理,制备了钢管桩、碎石桩及碎石填芯钢管桩加固三种地基模型,模拟地震荷载,进行振动台对比试验。结果表明,碎石填芯钢管桩不仅消散了孔隙水压力,还可以增强土体强度及减小桩体位移,具有良好的加固液化土体的效果。
In order to further study the effect and mechanism of crushed stone filled steel pipe pile for liquefying ground, three kinds of foundation models of steel pipe pile, crushed stone pile and steel core pile reinforced with gravel core were prepared to simulate the seismic load, test. The results show that the gravel core-filled steel pipe piles not only dissipate the pore water pressure, but also can enhance the strength of the soil and reduce the displacement of the pile, which has the good effect of reinforcing the liquefied soil.