|
|||||
|
|
| 场地条件对地震动参数影响的关键问题 | |
| 引用本文： | 吕悦军,彭艳菊,兰景岩,孟小红.场地条件对地震动参数影响的关键问题[J].震灾防御技术,2008,3(2):126-135. |
| 作者姓名： | 吕悦军 彭艳菊 兰景岩 孟小红 |
| 作者单位： | 1. 中国地质大学(北京)北京100083;中国地震局地壳应力研究所,北京,100085 2. 中国地震局地壳应力研究所,北京,100085 3. 中国地质大学(北京)北京100083 |
| 基金项目： | 中国地震局地壳应力研究所中央级公益性科研院所基本科研业务专项基金,国家科技支撑计划 |
| 摘 要： | 场地条件对地震动的影响很大,在地震动幅值（如峰值加速度）和频谱特性（如反应谱特征周期）的变化上均有体现,而我国现行抗震设计规范没有考虑不同场地条件下地震动峰值加速度和加速度反应谱平台值的变化。本文介绍了我国现行抗震设计规范中场地类别的划分方法、场地对地震动参数值的规定和存在的问题。详细分析了土层结构、覆盖层厚度等场地条件对地震动峰值加速度和反应谱的影响,以及已经取得的研究成果。最后,就场地分类、影响地震动参数的场地条件、地震动参数随场地条件调整的方法等,提出了有待进一步研究的问题。 |
| 关 键 词： | 场地条件 地震动 抗震规范 场地影响 |
| 收稿时间： | 2008/4/18 0:00:00 |
Some Key Problems about Site Effects on Seismic Ground Motion Parameters |
|
| Lu Yuejun,Peng Yanju,Lan Jingyan and Meng Xiaohong.Some Key Problems about Site Effects on Seismic Ground Motion Parameters[J].Technology for Earthquake Disaster Prevention,2008,3(2):126-135. | |
| Authors: | Lu Yuejun Peng Yanju Lan Jingyan and Meng Xiaohong |
| Institution: | China University of Geosciences, Beijing 100083, China / Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;China University of Geosciences, Beijing 100083, China / Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;China University of Geosciences, Beijing 100083, China |
| Abstract: | The site condition has great effects on both magnitude and frequency of seismic ground motion spectrum, such as, peak acceleration and characteristic period of response spectrum. The variations of peak acceleration and flat maximum of design spectrum have not been taken into consideration in current seismic code in China. In this paper the site classification method currently being used in China is introduced, and the adjustment of ground motion parameters on different sites is discussed. Analysis on effects of site soil layer formation, thickness of overlay soil layer on peak ground motion and response spectrum is presented. Finally, some problems required further study in the future are pointed out, such as site classification, site condition effects on ground motion and adjustments of ground motion parameters. |
| Keywords: | Site condition Seismic ground motion Seismic code Site effect |
| 本文献已被 维普 万方数据 等数据库收录！ | |
| 点击此处可从《震灾防御技术》浏览原始摘要信息 | |
| 点击此处可从《震灾防御技术》下载免费的PDF全文 | |