ABSTRACT

On 30.10.2020, a Mw = 6.6 magnitude earthquake occurred at the offshore Aegean Sea, hitting the western coast of Turkey and Samos Island of Greece, causing loss of lives and properties. In the scope of this study, a site investigation was conducted at the earthquake-hit area of İzmir (Turkey), where 17 buildings (7 partially, 10 totally) were collapsed and many of them were heavily damaged. The impact of the Aegean Sea Earthquake on structures in the İzmir region, as observed during this site investigation is presented in this paper. The seismic vulnerabilities of structures, by referring to the observed typical damages caused by the earthquake, are discussed and preliminary analyses were also conducted in two reinforced concrete buildings to investigate the causes of seismic damages. The damage mechanisms are explained to highlight the causes and defects that led to failure of structures and recommendations are made for preventing such failures and life losses in the future. In additional to the structural damages, widespread non-structural damages which can make buildings non-functional are investigated. This paper also outlines seismological aspects of the region and characteristics of the recorded strong ground motion.

摘要

2020年10月30日，爱琴海近海发生Mw=6.6级地震，波及土耳其西海岸和希腊萨摩斯岛，造成人员生命财产损失。在这项研究的范围内，在伊兹密尔（土耳其）地震灾区进行了现场调查，那里有 17 座建筑物（部分 7 座，全部 10 座）倒塌，其中许多建筑物严重受损。本文介绍了在现场调查期间观察到的爱琴海地震对伊兹密尔地区结构的影响。结合观察到的典型地震破坏，讨论了结构的地震易损性，并在两座钢筋混凝土建筑物中进行了初步分析，以探讨地震破坏的原因。解释损坏机制以突出导致结构失效的原因和缺陷，并提出建议以防止将来发生此类失效和生命损失。除了结构性损坏外，还调查了可能使建筑物无法使用的广泛的非结构性损坏。本文还概述了该地区的地震学方面以及所记录的强烈地面运动的特征。