基于已开发的确定性和概率方法的伊朗中东部地区地震危险性评估研究

IF 1.4 Q2 ENGINEERING, MULTIDISCIPLINARY
Amin Foyouzati, Fayaz Rahimzadeh Rofooei
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引用次数: 0

摘要

本研究旨在介绍伊朗东部地震多发地区的地震危险性评估,由于其日益增长的经济重要性,该地区变得越来越重要。近年来,由于大地震,该地区的许多城市都经历了生命和经济损失。因此,在本研究中,利用概率方法获得了该地区的地震危险性图和曲线,以及特定地点的频谱。设计/方法/方法收集地震构造信息、地震活动性数据和地震目录,确定主要活动性震源,考虑地震带覆盖潜在活动性震区。基于逻辑树方法的地震模型采用了2个震源模型、2个聚类目录、3种地震重现参数和最大考虑地震选择以及4种地震动预测(衰减)模型(GMPE)。结果表明,研究区地震危险性等级差异较大。475年回归期的峰值地面加速度(PGAs)在地震活动性低的西北地区为0.1 g,在地震活动性高的西南地区为0.52 g。同一地区2475年的pga也在0.12 ~ 0.80 g之间。将计算的危险性结果与基于伊朗地震规范的该地区可接受的地震危险性水平进行了比较。独创性/价值一种新的概率方法已被开发用于获得地震危险度图和曲线;这些结果将有助于工程师设计抗震结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seismic hazard assessment studies based on developed deterministic and probabilistic approaches for the central-east of Iran region
Purpose This Study aims to present the seismic hazard assessment of the earthquake-prone eastern of Iran that has become more important due to its growing economic importance. Many cities in this region have experienced life and financial losses due to major earthquakes in recent years. Thus, in this study the seismic hazard maps and curves, and site-specific spectrums were obtained by using probabilistic approaches for the region. Design/methodology/approach The seismotectonic information, seismicity data and earthquake catalogues were gathered, main active seismic sources were identified and seismic zones were considered to cover the potential active seismic regions. The seismic model based on logic tree method used two seismic source models, two declustered catalogues, three choices for earthquake recurrence parameters and maximum considered earthquakes and four ground motion predicting (attenuation) models (GMPE). Findings The results showed a wide range of seismic hazards levels in the study region. The peak ground acceleration (PGAs) for 475 years returns period ranges between 0.1 g in the north-west part of the region with low seismic activity, to 0.52 g in the south-west part with high levels of seismicity. The PGAs for a 2,475-year period, also ranged from 0.12 to 0.80 g for the same regions. The computed hazard results were compared to the acceptable level of seismic hazard in the region based on Iran seismic code. Originality/value A new probabilistic approach has been developed for obtaining seismic hazard maps and curves; these results would help engineers in design of earthquake-resistant structures.
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来源期刊
World Journal of Engineering
World Journal of Engineering ENGINEERING, MULTIDISCIPLINARY-
CiteScore
4.20
自引率
10.50%
发文量
78
期刊介绍: The main focus of the World Journal of Engineering (WJE) is on, but not limited to; Civil Engineering, Material and Mechanical Engineering, Electrical and Electronic Engineering, Geotechnical and Mining Engineering, Nanoengineering and Nanoscience The journal bridges the gap between materials science and materials engineering, and between nano-engineering and nano-science. A distinguished editorial board assists the Editor-in-Chief, Professor Sun. All papers undergo a double-blind peer review process. For a full list of the journal''s esteemed review board, please see below.
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