成都理工大学学报（自然科学版）2025，Vol.52Issue(4)：185-198,14.DOI:10.12474/cdlgzrkx.2025012601
西藏定日2025年1月MS6.8级强震对藏式民居的破坏模拟与动力响应反演
Seismic damage simulation and dynamic response inversion of Tibetan dwellings in Dingri County,Xizang,during the MS 6.8 earthquake in January 2025
摘要
Abstract
To study the damage patterns and dynamic response of Tibetan dwellings in Dingri County,Xizang,during the recent MS 6.8 earthquake,a 1/12 scale model based on the timber-stone structure of Tibetan dwellings was constructed,and earthquake simulation vibration table tests were conducted.Inversion analysis was performed on the damage and dynamic response of Tibetan dwellings in Dingri County during the earthquake.The key findings of the study are as follows.(1)The weak points of the Tibetan dwelling model are concentrated in the walls at the eaves,the second floor,walls near doors and window openings,and corners.Among these,the eaves and door/window openings are the most vulnerable areas.(2)The model structure exhibits torsional effects,with the stiffness of the first floor significantly greater than that of the second floor,leading to significant interlayer displacement and torsion in the second floor,making it the weakest layer of the structure.(3)By progressively increasing the acceleration,the model can effectively withstand earthquake intensities up to 0.4 g.However,under higher-intensity earthquakes(0.62 g and above),the model experiences collapse and damage.Due to the scaling effect,damage to actual buildings will be more severe.This study provides scientific evidence for understanding the damage patterns of houses during this earthquake,and also offers important references for improving the seismic performance of Tibetan dwellings and for post-earthquake reconstruction in the region.关键词
藏式民居/地震模拟振动台试验/破坏模式/动力响应/定日MS6.8级地震Key words
Tibetan dwellings/earthquake simulation vibration table tests/damage patterns/dynamic response/MS 6.8 earthquake,Dingri County分类
土木建筑引用本文复制引用
常鸣,范宣梅,周康驰,赵伟华,刘洋..西藏定日2025年1月MS6.8级强震对藏式民居的破坏模拟与动力响应反演[J].成都理工大学学报（自然科学版）,2025,52(4):185-198,14.基金项目
国家自然科学基金(42477173) （42477173）
四川省中央引导地方科技发展专项项目(2024ZYD0121) （2024ZYD0121）
成都理工大学珠峰科学研究计划2.0交叉项目支持. （）
