Centrifuge model tests and numerical simulation summary
(1) geotechnical boundary value problems for discussion, need to use finite element analysis software. To assess the reliability of numerical analysis software is available through centrifuge model tests, to provide a complete and comparable monitoring results. Numerical value from the measured values and model comparison test, the program can understand the value of a particular boundary value problem analysis.
(2) by the centrifuge model tests the level of acceleration measured results, when the earth dam is located in the rigid rock, its amplitude amplification effect of the dam the more obvious items. Conversely, when the earth dam is located in the soil, due to a smaller crest amplitude amplification, so the dynamic security is high.
(3) fixed boundary model boxes and boxes of non-layered model (laminar box) to the soil model vibration test, the soil foundation may inhibit the maximum acceleration rate of decrease with depth while the larger trend.
(4) by this numerical analysis and experimental measurement results, the range of small earth dam of the main cycle for 0.60 ~ 0.75 S, and the acceleration rate does not exceed the maximum bandwidth of 1.6 Hz, which means that the horizontal acceleration of the frequency distribution is very concentrated.
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