| 利用混合法合成成都断层宽频地震动 |
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| 引用本文： | 周红,吴清,吕红山,俞言祥.利用混合法合成成都断层宽频地震动[J].震灾防御技术,2018,13(4):764-774. |
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| 作者姓名： | 周红 吴清 吕红山 俞言祥 |
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| 作者单位： | 中国地震局地球物理研究所, 北京 100081 |
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| 基金项目： | 国家重点研发计划（2017YFC1500205）,国家自然基金面上项目（41774064） |
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| 摘 要： | 首先,依据成都活断层探测的深、浅层地震勘探资料、钻井资料、地形资料,建立成都地区地下三维介质模型,并基于活断层确定的双石-大川断裂发生7.6级潜在地震的地震活动性探测结果,设定断层破裂震源模型,采用随机有限断层方法模拟短周期地震动、谱元法模拟长周期地震动,利用混合法通过频域合成技术获得了研究区域的宽频地震动。最后,讨论了合成结果的PGA、PGV、PGD以及0.3s和1.0s反应谱的分布特征,依据分布结果对成都市区进行了本次设定地震的地震动讨论。
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| 关 键 词： | 谱元法 混合法 随机有限断层法 地震动 |
| 收稿时间： | 2018/1/11 0:00:00 |
The Simulated Ground Motion of Chengdu Fault in Broadband Frequency by the Hybrid Method |
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| Zhou Hong,Wu Qing,L&#; Hongshan and Yu Yanxiang.The Simulated Ground Motion of Chengdu Fault in Broadband Frequency by the Hybrid Method[J].Technology for Earthquake Disaster Prevention,2018,13(4):764-774. |
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| Authors: | Zhou Hong Wu Qing L&#; Hongshan and Yu Yanxiang |
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| Institution: | Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
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| Abstract: | Based on the seismic prospecting data of deep and shallow layers, drilling data and topographic data in Chengdu, a deep three-dimensional medium model of Chengdu is established. Then, based on the data of Shuangshi-Dachuan fault survey the rupture source model of MS 7.6 potential earthquake is set up. The stochastic finite fault method is used to simulate the short period ground motion and the spectral element method is used to simulate the long period ground motion. The broadband seismic motion is obtained by the frequency domain synthesis technology of two parts. Finally, the distribution characteristics of the synthetic PGA, PGV, PGD, 0.3s response spectrum and 1.0s response spectrum are given and discussed. |
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| Keywords: | The spectral element method The hybrid method The stochastic finite fault method The ground motion |
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