隆阳5.2级地震极震区建筑震害调查与分析  

Investigation and Analysis of Building Damage in the Epicentral Area of the 5.2 Magnitude Earthquake in Longyang

作　　者：叶阳 周洋 明小娜[1] 杨健强[1] 刘绍昌 YE Yang;ZHOU Yang;MING Xiaona;YANG Jianqiang;LIU Shaochang(Yunnan Earthquake Agency,Kunming,Yunnan 650224,China;Dehong Earthquake Prevention and Disaster Reduction Bureau,Mangshi,Yunnan 678400,China)

机构地区：[1]云南省地震局,中国地震局昆明地震预报研究所,云南昆明650224 [2]德宏州防震减灾局,云南芒市678400

出　　处：《山西地震》2025年第1期46-52,56,共8页Earthquake Research in Shanxi

基　　金：云南省五类木结构营造方式及抗震能力探究项目(2023KZL03)。

摘　　要：2023年5月2日云南保山市隆阳区发生5.2级地震,震中位于瓦窑镇,其中瓦窑社区为高烈度异常点。极震区内木结构、砌体结构、框架结构等不同结构类型的建筑物受损均显著加重,木结构普遍梭瓦掉瓦、出现墙体破坏现象;多数砌体结构受到轻微破坏,少数砌体结构出现贯穿裂缝,个别砌体结构毁坏;少数框架结构承重构件受损。相较于同区域同级别地震,震害现象更明显,震害指数更高,为典型的烈度异常点。通过对该地区各类结构典型震害进行分析研究表明,极震区位于山谷之间的盆地,对地震波有明显放大效应,且当地房屋建筑修建年代较早,存在大量未设防或未严格按照标准设防建筑,少数框架建筑存在施工质量问题,并对此提出结构抗震有关建议。A 5.2 magnitude earthquake occurred in Longyang District,Baoshan City,Yunnan Province on May 2,2023.The epicenter was located in Wayao Town,and the Wayao community was a high-intensity anomaly.In the extreme earthquake area,the damage of wood structure,masonry structure,frame structure and other structural types of buildings is significantly increased:the wooden structure generally appears to shed tiles,wall damage is prominent.Most masonry structures were slightly damaged,a few masonry structures appeared through cracks,and some masonry structures were damaged.A small number of load-bearing members of the frame structure were damaged.Compared with earthquakes of the same magnitude in the same area,the earthquake damage phenomenon is more obvious and the earthquake damage index is higher,which is a typical intensity anomaly.Through further analysis of the typical seismic damage of various structures in this area,it is shown that the extremely seismic area is located in the basin between the valleys and has obvious seismic amplification effect.The local buildings were built in an early age,there are a large number of unfortified buildings or not strictly in accordance with the standards of fortified buildings and a few frame buildings have construction quality problems.

关 键 词：地震震害调查 建筑结构 木结构 砌体结构 框架结构 

分 类 号：P315.9[天文地球—地震学]