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首页> 外文期刊>KSCE journal of civil engineering >Development of seismic CPT for evaluating in-flight soil properties in centrifuge model test
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Development of seismic CPT for evaluating in-flight soil properties in centrifuge model test

机译：离心模型试验中用于评估飞行中土壤特性的地震CPT的开发

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While performing centrifuge test, it is necessary to carry out in-flight soil characterization in order to fully characterize the soil. A Seismic Cone Penetration Testing (SCPT) system was developed for quantitative evaluation of soil strength and stiffness variation with depth by measuring the cone penetration resistance (q (c) ) and the shear wave velocity (V (s) ). In order to verify the applicability of the developed system, a centrifuge model test using silica sand was performed. This paper presents the testing procedure, typical signals from seismic cone and data analysis method. The refracted ray path method was used for the SCPT data interpretation because the first arrival travel time is determined by a shear wave propagating along a downward curved ray path rather than a straight path due to the effect of increasing vertical stress. The Vs profile with depth is verified through comparison with bender element test results. The results show that the SCPT system used during the centrifuge testing is an appropriate technique for measuring the in-flight soil properties.
机译：在进行离心测试时，有必要对飞行中的土壤进行表征以充分表征土壤。开发了一种地震锥体渗透测试（SCPT）系统，用于通过测量圆锥体的穿透阻力（q（c））和剪切波速度（V（s））来定量评估土壤强度和刚度随深度的变化。为了验证所开发系统的适用性，使用硅砂进行了离心模型测试。本文介绍了测试程序，来自地震锥的典型信号和数据分析方法。折射射线路径方法用于SCPT数据解释，因为由于垂直应力的增加，第一次到达的传播时间是由沿着向下弯曲射线路径而不是直线路径传播的剪切波确定的。通过与弯曲元素测试结果进行比较来验证具有深度的Vs轮廓。结果表明，离心测试中使用的SCPT系统是一种用于测量飞行中土壤特性的合适技术。

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