四川兴文5.7级地震烈度评定及结构震害简析  

A Study on the Intensity Scale and Structural Damage of Xingwen 5.7-Magnitude Earthquake

作　　者：格桑扎西 何玉林[1] 毛利[1] 赵晶[1] GESANGZHAXI;HE Yulin;MAO Li;ZHAO Jing(Sichuan Earthquake Agency, Sichuan Chengdu 610000, China)

机构地区：[1]四川省地震局

出　　处：《四川地震》2019年第3期42-46,共5页Earthquake Research in Sichuan

摘　　要：四川兴文5.7级地震共致宜宾市兴文县、珙县和长宁县3个县22个乡镇受灾,震区抗震设防烈度为Ⅵ度。震区主要建筑物结构类型为框架结构、砖混结构、砖木结构和土木结构,大多数房屋没有经过抗震设防加固,抗震性能一般。通过对震区3个县68个抽样点的调查,发现框架结构和设防砖混结构在此次地震中表现出了良好的抗震性能。同时对不同结构类型房屋的构造方式、分布情况和震害特点进行了分析,并针对不同的震害特征,为今后该地区的灾后恢复重建和防震减灾工作提出了对策建议。A 5.7-magnitude earthquake caused damage to 3 counties and 22 towns in Yibin,Sichuan Province,the seismic precautionary intensity of these areas were 6 degree.Without fortification and reinforcement,most of the timber-masonry and concrete-masonry building structures in the quake-hit areas couldn’t offer excellent protection from earthquake damage.Based on the investigation of 68 sample points in 3 counties in earthquake areas,the proportion and distribution of different building structures are counted,and relating to building construction and earthquake damage are analyzed.The result shows that frame structure and fortified masonry structure perform well when it comes to earthquake resistance.In addition,gives advice on post-disaster reconstruction,earthquake prevention and disaster reduction.

关 键 词：兴文地震 震害调查 烈度评定 结构震害特征 

分 类 号：P315.94[天文地球—地震学]