| 预应力锚索加固石窟岩体的地震动力响应研究 |
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| 引用本文： | 秋仁东,石玉成,徐舜华,胡明清.预应力锚索加固石窟岩体的地震动力响应研究[J].西北地震学报,2007,29(1):49-53. |
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| 作者姓名： | 秋仁东 石玉成 徐舜华 胡明清 |
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| 作者单位： | 中国地震局地震预测研究所兰州科技创新基地,甘肃,兰州,730000;中国地震局兰州地震研究所,甘肃,兰州,730000 |
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| 基金项目： | 科技部科研院所社会公益研究专项基金;中国地震局兰州地震研究所项目;中国地震局兰州地震研究所项目 |
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| 摘 要： | 根据锚索加固石窟岩体的特点,以甘肃安西榆林石窟的三个典型的工程段为例,通过动力有限元的方法对地震荷载作用下预应力锚索加固石窟岩体的位移场、应力场的模拟计算,得出了其动态响应和变化规律。并通过对地震荷载的频谱特性分析,揭示了地震荷载的特征周期对锚索加固石窟围岩的动力响应结果的影响。
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| 关 键 词： | 榆林石窟 石窟岩体 预应力锚索 动力有限元 地震荷载 |
| 文章编号： | 1000-0844（2007）01-0049-05 |
| 修稿时间： | 2006-05-12 |
Study on Dynamical Response of Grotto Rock Reinforced by Prestress Anchor Cable under the Seismic Load |
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| QIU?Ren-dong,SHI?Yu-cheng,XU?Shun-hua and HU?Ming-qing.Study on Dynamical Response of Grotto Rock Reinforced by Prestress Anchor Cable under the Seismic Load[J].Northwestern Seismological Journal,2007,29(1):49-53. |
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| Authors: | QIU?Ren-dong SHI?Yu-cheng XU?Shun-hua and HU?Ming-qing |
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| Institution: | 1. Lanzhou Base of Institute of Earthquake Prediction, CEA, Lanzhou 730000, China; 2. Lanzhou Institute of Seismology, CEA, Lanzhou 730000,China |
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| Abstract: | Based on the characteristic of the grotto rock reinforced by prestress anchor cable,taking three typical engineering sections in Yulin grotto in Anxi county Gansu province,as examples,the simultating computation for the displacement field and stress field of the grotto rock under seismic load is done using dynamic finite element method,the change regularity and dynamical response of the grotto rock are concluded.Meanwhile through analyzing the characteristic of the frequency spectrum of real seismic load, the influence of sismic load's feature period on dynamic response result of the grotto rock is revealed. |
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| Keywords: | Yulin grotto Grotto rock Prestress anchor cable Dynamic finite element Seismic load |
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