| 最大峰值加速度与有效峰值加速度的大小比例关系及影响因素探讨 |
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| 引用本文： | 钟菊芳,胡晓,易立新,吴胜兴. 最大峰值加速度与有效峰值加速度的大小比例关系及影响因素探讨[J]. 世界地震工程, 2006, 22(2): 34-38 |
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| 作者姓名： | 钟菊芳 胡晓 易立新 吴胜兴 |
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| 作者单位： | 河海大学土,木工程学院,江苏,南京,210098;中国水利水电科学研究院,北京,100044;南开大学,建筑工程学院,天津,300071 |
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| 基金项目： | 科学技术部资助(项目编号:2002DIA10002,名称:中国重要大坝强震监测与地震动输入机制研究。) |
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| 摘 要： | 分别以最大峰值加速度(以下简称PGA)和有效峰值加速度(以下简称EPA)为参数,对金沙江流域上12个工程场点进行了地震危险性分析,得到了各个场点在不同的年超越概率下的基岩PGA和EPA值。通过对PGA、EPA值比较分析认为:PGA与EPA值的大小比例关系主要受年超越概率大小的影响,当年超越概率较大时,表现为PGA>EPA;当年超越概率较小时,PGA与EPA的比例关系还与场点周围的潜源分布形式及潜源的震级上限的大小有关,不同的年超越概率、不同的潜源分布形式和震级上限,可使PGA>EPA,也可使PGA
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| 关 键 词： | 有效峰值加速度(EPA)最大峰值加速度(PGA) 年超越概率 潜在震源 |
| 文章编号： | 1007-6069(2006)02-0034-05 |
| 收稿时间： | 2005-12-19 |
| 修稿时间： | 2006-04-27 |
Study on relations of effective peak acceleration and peak ground acceleration |
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| ZHONG Ju-fang,HU Xiao,YI Li-Xin,WU Sheng-xing. Study on relations of effective peak acceleration and peak ground acceleration[J]. World Information On Earthquake Engineering, 2006, 22(2): 34-38 |
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| Authors: | ZHONG Ju-fang HU Xiao YI Li-Xin WU Sheng-xing |
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| Affiliation: | 1. College of Civil Engineering, Hohai University, Nanjing 210098 ,China; 2. China Institute of Water Resource Beijing 100044,China; 3. Nankai University, Tianjin 300072 ,China |
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| Abstract: | The relations between effective peak acceleration(EPA) and peak ground acceleration(PGA) of earthquakes are compared,and the influences of annual exceed probability of earthquakes and potential earthquake sources in sites on the relations are analyzed.The PGA is larger than EPA when the annual exceed probability is large;when the annual exceed probability is small,the relations between PGA and EPA are complex,it depends the distribution and the maximum magnitude of the potential earthquake sources in sites.Differences in the annual exceed probability,the distribution and the maximum magnitude of the potential earthquake sources in the sites could make PGA larger than EPA or PGA smaller than EPA. |
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| Keywords: | effective peak acceleration(EPA) peak ground acceleration(PGA) the annual exceed probability potential earthquake sources. |
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