双面岩质高陡边坡加速度高程放大效应的时频分析方法

doi:10.13722/j.cnki.jrme.2014.s2.038

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摘要基于弹性波动理论，利用水平分层法，建立微元体的受力平衡微分方程，借助Hilbert-Huang变换，结合边界条件，应用振型分解法和正交理论推导双面岩质高陡边坡加速度高程放大效应的时频分析方法，并通过振动台试验和数值模拟验证该方法的合理性。该方法不仅能够很好地考虑地震波三要素(峰值加速度、频率以及持时)对加速度高程放大性的影响，而且能够从理论计算的角度来解释坡体的“鞭梢效应”问题。

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	杨长卫1
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	张建经1
	刘飞成1

关键词 ：边坡工程, 双面岩质高陡边坡, 加速度, 放大效应, 时频分析方法

Abstract：Based on the elastic wave theory，the force balance differential equation is established by using the horizontal slice method. The time-frequency analysis method of the amplification of accelerations of the high steep hill with two-side slopes is derived，and the reasonability of this method is verified by the results of shaking table test and numerical simulation. This method not only can consider the effect of the three factors of the seismic wave which are peak ground acceleration，frequency and duration on the amplification of accelerations of the high steep hill with two-side slopes，but also can illustrate the whiplash effect of the slope theoretically.

Key words： slope engineering high steep hill with two-side slopes acceleration amplification time-frequency analysis method

引用本文:

杨长卫1，2，张建经1，刘飞成1. 双面岩质高陡边坡加速度高程放大效应的时频分析方法[J]. 岩石力学与工程学报, 2014, 33(S2): 3699-3706.
YANG Changwei1，2，ZHANG Jianjing1，LIU Feicheng1. TIME-FREQUENCY ANALYSIS METHOD OF AMPLIFICATION EFFECT OF ACCELERATION OF HIGH AND STEEP HILL WITH TWO-SIDE ROCK SLOPES. , 2014, 33(S2): 3699-3706.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2014.s2.038 或 https://rockmech.whrsm.ac.cn/CN/Y2014/V33/IS2/3699

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