甘肃积石山6.2级地震村镇建筑震害调查与分析  

Investigation and analysis of seismic damage of rural buildings caused by M_(s)6.2 earthquake in Jishishan of Gansu Province

作　　者：杨永强[1,2] 田健叶 周宝峰 聂桂波[1,2] 王宏伟 谢贤鑫[1,2] 戴君武 YANG Yongqiang;TIAN Jianye;ZHOU Baofeng;NIE Guibo;WANG Hongwei;XIE Xianxin;DAI Junwu(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China)

机构地区：[1]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]地震灾害防治应急管理部重点实验室,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2024年第2期208-217,共10页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(52078472)。

摘　　要：积石山地震对甘肃和青海部分地区房屋建筑造成了严重破坏。调查了地震烈度7度和8度地区的11个调查点的村镇建筑震害。震害调查表明:地震灾区主要为乡镇和农村地区,房屋结构类型主要为土木、砖木和未设防砖混结构;在烈度8度地区,土木结构房屋主要表现为严重破坏或倒塌破坏,砖木结构和未设防砖混结构房屋主要表现为中等破坏和严重破坏,设防砖混和钢筋混凝土框架结构房屋主要表现为轻微破坏和中等破坏;在烈度7度地区,土木结构房屋以中等破坏为主,砖木结构和未设防砖混结构房屋以轻微破坏和中等破坏为主,设防砖混和钢筋混凝土框架结构房屋以轻微破坏和基本完好为主。此次地震震害较同级别地震偏重,与震区复杂地形、地震动峰值放大效应、建筑砌筑质量差和结构受力不合理等因素相关。建议进一步开展复杂地形场地放大效应及频谱影响研究,重视建筑非结构构件抗震宣传与实用技术研发。Jishishan earthquake caused serious damages to buildings in some areas of Gansu Province and Qinghai Province.The seismic damages of rural buildings at 11 survey points were investigated in areas with seismic intensities of 7 and 8 degrees.The seismic damage investigation shows that the earthquake disaster regions are mainly areas of towns and villages,and the main types of house structures are civil structure,brick and wood structure and unfortified brick concrete structure.In areas with intensity 8 degree,houses of civil structure mainly perform as severely damaged or collapsed.Brick wood structure and unfortified brick concrete structure houses were mainly damaged moderately and severely.Fortified brick concrete and reinforced concrete frame structure houses were damaged slightly and moderately.In areas with intensity 7 degree,civil structure houses were mainly damage moderately.Brick wood structure and unfortified brick concrete structure houses mainly damage slightly and moderately.Fortified brick concrete and reinforced concrete frame structure houses were mainly damaged slightly and basically intact.The seismic damage caused by the earthquake is more severe than that of earthquakes with the same magnitude,which is related to factors such as the amplification effect of ground-motion peak values of complex terrain in the earthquake area,poor quality of building masonry,and unreasonable structural stress of buildings.It is recommended to carry out further research on site amplification effect and spectrum impact of complex terrain,and attach importance to the earthquake resistance promotion and practical technology development of non-structural components of buildings.

关 键 词：积石山地震 村镇建筑震害 构造措施 场地放大效应 非结构构件 

分 类 号：P315.9[天文地球—地震学] TU318[天文地球—固体地球物理学]