地震工程学报2025，Vol.47Issue(3)：700-708,9.DOI:10.20000/j.1000-0844.20250113001
西藏定日6.8级地震民居震害原因分析
Causes of damage to residential buildings during the Dingri Ms6.8 earthquake in Xizang
摘要
Abstract
On January 7,2025,an Ms6.8 earthquake occurred in Cuoguo Township,Dingri Coun-ty,Shigatse City,Xizang Autonomous Region,with a focal depth of 10 km.The epicenter was located in a high-altitude frigid region along the Shenza—Dingjie rift within the Lhasa block of the Qinghai—Xizang Plateau.The Dengmo fault,the seismogenic fault of the earthquake,is charac-terized by normal faulting,with a maximum coseismic displacement of approximately 3 m.Using results from a survey of residential building structures in the earthquake-prone regions of Xizang prior to the earthquake,this paper provides a summary of significant destructive earthquakes that occurred in Xizang from 1980 to 2024.The seismogenic structure of the Dingri Ms6.8 earthquake and seismic damages to local residential buildings are also analyzed.The research results indicate that the Dingri Ms6.8 earthquake is an earthquake with large magnitude,high intensity,and seri-ous casualties compared with the earthquakes that occurred in Xizang over the years.Most resi-dential buildings in the local area are wall-lifted beam structures.The earthquake damages include the peeling or even collapse of self-supporting walls,external wall cracking,house collapse due to overweight roofs,broken wooden columns or beam-column joints,and the fall of nonstructural components.Finally,a comprehensive analysis is conducted to identify the factors contributing to the severe casualties in this earthquake.关键词
定日地震/房屋建筑/藏式传统民居/震害分析Key words
Dingri earthquake/building structure/Xizang residential buildings/seismic damage analysis分类
建筑与水利引用本文复制引用
王言侨,李祥秀,王宁,吴清,卢晨虎,刘爱文..西藏定日6.8级地震民居震害原因分析[J].地震工程学报,2025,47(3):700-708,9.基金项目
国家自然科学基金(42494860,52278540) （42494860,52278540）
北京市自然科学基金(8242021) （8242021）
