Tests for inverting pile-soil interaction parameters with low-strain dynamic test curves

YU Yunyan1 CAO Junwei2 YUAN Chunhui3

Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (2) : 210-215.

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PDF(1994 KB)
Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (2) : 210-215.

Tests for inverting pile-soil interaction parameters with low-strain dynamic test curves

  • YU Yunyan1  CAO Junwei2   YUAN Chunhui3
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Abstract

Yellow River sand and loess were taken as pile-side soil to study the interaction of pile-soil with laboratory tests. The acceleration digital signals at the top of pile were received using a WaveRunner 44Xi oscilloscope. The reverberation-ray matrix method was applied to invert damping and stiffness coefficients of pile-side soil under different compacting conditions. The test results showed that the denser the soil, the larger the damping coefficients and stiffness ones; damping coefficients grow faster when soil is looser, but two coefficients’ growth is nearly equal when soil is denser.

Key words

pile-soil interaction / damping coefficient / stiffness coefficient / laboratory test / reverberation-ray matrix method

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YU Yunyan1 CAO Junwei2 YUAN Chunhui3 . Tests for inverting pile-soil interaction parameters with low-strain dynamic test curves[J]. Journal of Vibration and Shock, 2018, 37(2): 210-215

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