Preliminary investigation of building damage in Hatay under February 6,2023 Turkey earthquakes  

作　　者：Wang Tao Chen Jie Zhou Yujiang Wang Xiaoqing Lin Xuchuan Wang Xiaoting Shang Qingxue 

机构地区：[1]Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China [2]Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China [3]Institute of Earthquake Forecasting,China Earthquake Administration,Beijing 100036,China [4]Department of Civil Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Earthquake Engineering and Engineering Vibration》2023年第4期853-866,共14页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China for Distinguished Young Scholars under Grant No.52125806;Heilongjiang Touyan Innovation Team Program under Grant No.3016。

摘　　要：On February 6,2023,an M_(w)7.8 earthquake hit the south of Kahramanmaras prefecture,Turkey,followed by another M_(w)7.5 earthquake after nine hours in the middle region of the Kahramanmaras prefecture.More than 84,000 buildings collapsed or were severely damaged,and more than 50,000 lives were lost in Turkey and Syria.Some of the authors,as members of Chinese rescue team,entered Antakya,Hatay prefecture,and investigated the damaged buildings.This paper first summarizes the damage patterns of buildings and provides three reasons for the massive number of collapsed buildings;i.e.,the lack of seismic measures for better ductility,site effects such as liquefaction and surface rupture,and pronounced low-frequency components of the ground motions.Next,the seismic responses of two typical buildings are calculated based on the geometric data estimated by visual inspection.The results imply that the resonance of the whole structure and the poorer ductility of key members resulted in the collapse of buildings.Finally,some conclusions are drawn.Note that although a large number of buildings were seriously damaged to collapse,the majority of buildings in the areas of extreme shaking were lightly or moderately damaged,which implies that well designed and constructed buildings were able to survive and protect human lives even in over-design earthquakes.

关 键 词：Turkey earthquakes collapsed building seismic measures low frequency components building relics 

分 类 号：P315.9[天文地球—地震学] TU311.3[天文地球—固体地球物理学]