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攀西地区不同风险水平下基岩地震动参数之间的关系
引用本文:雷建成.攀西地区不同风险水平下基岩地震动参数之间的关系[J].中国地震,2002,18(2):193-202.
作者姓名:雷建成
作者单位:中国成都,61004,四川省地震局
基金项目:中国地震局 95 0 5 0 3 0 5 0 2课题,四川省科技厅重点科技及应用基础研究项目联合资助课题
摘    要:基于攀西地区基岩有效峰值加速度(EPA)区划图,本文统计得出50年超越概率63%,5%,3%,2%,1%下EPA与50年超越概率10%下EPA的比值分别为0.302,1.30,1.55,1.76,2.14,若以攀西地区地震动参数区划图作为抗震设防标准,同时仍按照89建筑规范中的有关规定进行地震作用计算,所考虑的地震作用是偏于保守,安全的,进一步研究比值A10/A63,发现其主要影响因素依次为地震动衰减关系,地震区带与潜在震溱区划分方案,地震活动性参数。本文研究成果将有助于地震参数区划图的推广和应用。

关 键 词:攀西地区  风险水平  基岩地震动参数  比值  抗震设防标准  地震活动性  地震作用
文章编号:1001-4683(2002)02-0193-10

The Relationship of Bedrock Seismic Ground Motion Parameters with Different Exceedance Probabilities in Panxi Area
Lei Jiancheng.The Relationship of Bedrock Seismic Ground Motion Parameters with Different Exceedance Probabilities in Panxi Area[J].Earthquake Research in China,2002,18(2):193-202.
Authors:Lei Jiancheng
Abstract:Based on the calculations of bedrock effective peak acceleration(EPA) zoning map in Panxi area,the ratios of EPA with exceedance probabilities of 63%,5%,3%,2% and 1% in 50 years to that of 10% in 50 years are 0.302, 1.30, 1.55, 1.76 and 2.14, respectively. The seismic affects will be conservative and safety if taking this zoning map as the earthquake fortification level and following the relevant rules of Seismic Design Code for Antiseismic of Construction (GBJ11-89) to calculate seismic affects.Furthermore,the main factors that influence the A10/A63 ratios are found in order to be attenuation relationship of seismic ground motion,division of seismic potential source areas and seismicity parameters.The achievements are helpful to the spreading and applying of the zoning map.
Keywords:Exceedance probabilities  Bedrock seismic motion parameters  Ratios
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