首页> 外文期刊>Journal of Earthquake Engineering >MODELLING OF THE GROUND MOTION AT RUSSE SITE (NE BULGARIA) DUE TO THE VRANCEA EARTHQUAKES
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MODELLING OF THE GROUND MOTION AT RUSSE SITE (NE BULGARIA) DUE TO THE VRANCEA EARTHQUAKES

机译:暴发性地震对俄罗斯新地(保加利亚)地面运动的建模

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摘要

An approach, capable of synthesising strong ground motion from a basic understanding of fault mechanism and of seismic wave propagation in the Earth, is applied to model the seismic input at a set of 25 sites along a chosen profile at Russe, NE Bulgaria, due to two intermediate-depth Vrancea events (August 30, 1986, M_w = 7.2, and May 30, 1990, M_w = 6.9). Accordingly to our results, once a strong ground motion parameter has been selected to characterise the ground motion, it is necessary to investigate the relationships between its values and the features of the earthquake source, the path to the site and the nature of the site. Therefore, a proper seismic hazard assessment requires an appropriate parametric study to define the different ground shaking scenarios corresponding to the relevant seismogenic zones affecting the given site. Site response assessment is provided simultaneously in frequency and space domains, and thus the applied procedure differs from the traditional engineering approach that discusses the site as a single point. The applied procedure can be efficiently used to estimate the ground motion for different purposes like microzonation, urban planning, retrofitting or insurance of the built environment.
机译:由于能够对断层机理和地震波在地球上的传播有基本的了解,因此该方法能够合成强烈的地面运动,该方法用于模拟沿着保加利亚东北部拉瑟的选定剖面在25个地点的一组地震输入。两个中间深度Vrancea事件(1986年8月30日,M_w = 7.2,1990年5月30日,M_w = 6.9)。根据我们的结果,一旦选择了强大的地面运动参数来表征地面运动,就必须研究其值与地震震源特征,到达地点的路径以及地点的性质之间的关系。因此,适当的地震危险性评估需要进行适当的参数研究,以定义与影响给定地点的相关地震发生带相对应的不同地面震动情况。站点响应评估是在频域和空间域中同时提供的,因此,所应用的过程不同于将站点作为单个点进行讨论的传统工程方法。所应用的过程可以有效地用于估算地面运动,以实现不同的目的,例如微区划,城市规划,建筑环境的改造或保险。

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