山东大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (2): 14-19.doi: 10.6040/j.issn.1672-3961.0.2017.027
白现军1,王太兴1,卫鑫1,赵武胜2
BAI Xianjun1, WANG Taixing1, WEI Xin1, ZHAO Wusheng2
摘要: 基于近断层速度脉冲与相位差谱的统计规律,提出一种脉冲型地震动人工合成方法,该方法能够确保合成地震波时域与频域的非平稳性。在此基础上,依托巴基斯坦N-J水电站,采用数值仿真方法研究方向性效应速度脉冲对引水隧洞的影响。结果表明:低频速度脉冲更接近围岩的自振频率,能够显著提高衬砌的内力,具有较强的破坏性。在近断层隧洞等地下工程的抗震设计中需要考虑断层的速度脉冲分量。
中图分类号:
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