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| 近断层地震动的基本特征 | |
| 引用本文： | 刘启方,袁一凡,金星,丁海平.近断层地震动的基本特征[J].地震工程与工程振动,2006,26(1):1-10. |
| 作者姓名： | 刘启方 袁一凡 金星 丁海平 |
| 作者单位： | 1. 中国地震局工程力学研究所,黑龙江,哈尔滨,150080 2. 中国地震局工程力学研究所,黑龙江,哈尔滨,150080;福建省地震局,福建,福州,350003 3. 中国地震局工程力学研究所,黑龙江,哈尔滨,150080;苏州科技学院,江苏,苏州,215011 |
| 基金项目： | 国家自然科学基金项目(50408003)，地震学联合基金项目(105020)，中国地震局工程力学研究所预研究项目 |
| 摘 要： | 本文对近断层地震动的基本特征作了详细分析,这些基本特征主要包括近断层强地震动的集中性、地表破裂、地面永久变形、破裂的方向性效应、近断层速度大脉冲和上盘效应。这些特征虽然在一次地震中不一定同时出现,但它们是已经被强震观测资料和数值模拟证实了的,在模拟和预测近断层地震动时,必须充分考虑这些特点,合理的近断层地震动模拟或预测模型和方法应当在结果中再现这些特点。 |
| 关 键 词： | 近断层地震动 破裂的方向性效应 地表破裂 速度脉冲 上盘效应 |
| 文章编号： | 1000-1301（2006）01-0001-10 |
| 收稿时间： | 2005-06-10 |
| 修稿时间： | 2005-06-102005-09-08 |
Basic characteristics of near-fault ground motion |
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| Liu Qifang,Yuan Yifan,Jin Xing,Ding Haiping.Basic characteristics of near-fault ground motion[J].Earthquake Engineering and Engineering Vibration,2006,26(1):1-10. | |
| Authors: | Liu Qifang Yuan Yifan Jin Xing Ding Haiping |
| Institution: | 1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; 2. Earthquake Administration of Fujian Province, Fuzhou 350003, China; 3. University of Science and Technology of Suzou, Suzou 215011, China |
| Abstract: | The basic characteristics of near-fault ground motion,including the concentration of near-fault strong ground motions,the surface rupture and fling-step,the rupture directivity effect,the near fault large velocity pulse and the hanging wall effect,are discussed in this paper.Although these characteristics may not appear in a single earthquake,they are testified by strong motion records and numerical simulation of near-fault ground motion.Some of these characteristics can be shown in the simulation or prediction results by reasonable model and method. |
| Keywords: | Near-fault ground motion rapture directivity effect surface rupture velocity pulse hanging-wall effect |
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