2019年松原M_(S)5.1地震烈度评定及震害特征简析  

Seismic Intensity Assessment and Damage Characteristics of Songyuan M_(S)5.1 Earthquake in 2019

作　　者：张仁鹏[1] 雷焕珍 陈聪[1] 陈琳荣[1] 冯靖乔[1] ZHANG Ren-peng;LEI Huan-zhen;CHEN Cong;CHEN Lin-rong;FENG Jing-qiao(Jilin Earthquake Agency,Jilin Changchun 130022,China;Earthquake Fast Determination and Re-port Center of Changchun,Jilin Changchun 130012,China)

机构地区：[1]吉林省地震局,吉林长春130117 [2]长春市地震速测速报中心,吉林长春130012

出　　处：《防灾减灾学报》2023年第1期34-40,共7页Journal of Disaster Prevention And Reduction

基　　金：吉林省地震局青年科技发展课题(JZQ-202217/JZQ-202312)。

摘　　要：2019年5月18日松原市发生M_(S)5.1地震,基于地震灾害现场调查、震源机制解、震区地震构造、强震动观测等,评定了地震烈度分布。此次地震极震区烈度为Ⅵ度,等震线长轴方向为北东向,面积为237km^(2)。调查结果表明,砖木结构受损比例最高,土木结构震害特征最重,简析震区土木结构、砖木结构、单层砖混结构和多层砖混结构房屋的震害特征,发现震区多次地震的积累,加大了本次地震中房屋的破坏程度。总结提出增强房屋抗震性能、加强防震减灾知识宣传教育等防震减灾建议。M_(S)5.1 earthquake occurred in Songyuan city on May 18,2019,based on the field investigation of earthquake disaster,focal mechanism,seismic structure and strong vibration observation,the distribu⁃tion of earthquake intensity is evaluated.The intensity of the earthquake wasⅥdegree,and the long axis of the isoseismic line was northeast,covering an area of 237 km^(2).The results show that brick and wood struc⁃tures have the highest proportion of damage,and civil structures have the heaviest damage characteristics,the earthquake damage characteristics of buildings with civil structure,brick and wood structure,singlestorey brick and concrete structure and multi-storey brick and concrete structure in earthquake area were an⁃alyzed briefly,it is found that the accumulation of many earthquakes in the earthquake area increases the damage degree of the houses in this earthquake.Some suggestions on earthquake prevention and disaster re⁃duction are put forward,such as strengthening the seismic performance of buildings and strengthening the publicity and education of earthquake prevention and disaster reduction knowledge.

关 键 词：松原MS5.1地震 烈度评定 震害特征 

分 类 号：P315.9[天文地球—地震学]