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简要分析了究州市城市规划区所处的地震构造环境、历史地震影响以及场地工程地震地质条件,利用地震危险性概率分析方法确定了50年超越概率为63%、10%和2%时兖州市城市规划区平均场地条件下的地震烈度、基岩地震动参数,并依据一维剪切波理论进行了场地地震反应分析,得到了兖州市城市规划区地表场地相关地震动参数.结果显示,兖州市城市规划区50年超越概率为10%时(重现期约500年)峰值地震加速度属于0.10 g范畴(相当于地震烈度Ⅶ度).这一结果被新修订《中华人民共和国地震动参数区划图》所吸收.
This paper briefly analyzes the seismic tectonic environment, the historical earthquake influence and the geological conditions of site engineering in the urban planning area of Zhenzhou City. The seismic hazard probability analysis method is used to determine the probability of 50% overrun of 63%, 10% and 2% The seismic intensity and the ground motion parameters of the bedrock under the average site conditions of the urban planning area in the urban planning area and the seismic response analysis of the site according to the one-dimensional shear wave theory are obtained and the ground motion parameters of the surface site in the urban planning area of Yanzhou City are obtained.The results show that, Peak seismic acceleration belongs to 0.10 g area (equivalent to Ⅶ earthquake intensity) when Yanzhou urban planning area has 50% probability of overcoming in 50 years (about 500 years of reappearance) .This result is newly revised “Earthquake Motion Parameters of the People’s Republic of China Zoning map ”absorbed.