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首页> 外文会议>GeoShanghai International Conference; 20060606-08; Shanghai(CN) >Effect of Shaking Intensity on Seismic Response of Single-pile Foundation in Liquefiable Soil
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Effect of Shaking Intensity on Seismic Response of Single-pile Foundation in Liquefiable Soil

机译：震动强度对液化土壤中单桩基础地震响应的影响

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The paper presents the experimental study on effect of shaking intensity on seismic responses of single-pile foundation in liquefiable soil. A pair of dynamic tests was performed on single-pile foundation models with different shaking intensities, by use of the bi-axial shaking table installed on HKUST (The Hong Kong University of Science & Technology) centrifuge. It is observed that the shaking level has remarkable effect on buildup of excess pore pressure in soil. As the pore pressure increases, the lateral soil resistances and bending moments along the pile tend to decrease, but the bearing capacity of pile foundation reduces as well. There exists a critical value of excess pore pressure ratio beyond which severe penetration of pile into soil layer occurs. The research has enhanced our current understanding on the mechanism of dynamic soil-pile interaction during the development of liquefaction.
机译：本文提出了振动强度对液化土壤中单桩基础地震响应影响的实验研究。使用安装在HKUST（香港科技大学）离心机上的双轴振动台，对具有不同振动强度的单桩基础模型进行了一对动态测试。可以看出，摇动水平对土壤中过量孔隙压力的积累有显着影响。随着孔隙压力的增加，沿桩的侧向土壤阻力和弯矩趋于减小，但桩基的承载力也随之降低。孔隙压力比过高存在一个临界值，超过该值时，桩会严重渗入土壤层。该研究增强了我们对液化过程中土-桩动力相互作用机理的当前理解。

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