Characteristics and Seismic Damage Analysis of Civil Structure Houses in Dingri MS6.8 Earthquake in Xizang
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摘要: 2025年1月7日西藏定日发生6.8级地震。地震造成126人死亡，188人受伤，伤亡主要由土木结构房屋的破坏造成，极震区内大多数土木结构房屋毁坏，少数破坏。本文主要介绍受灾地区藏式土木建筑构造特点、典型震害现象及破坏机理，分析藏式土木结构民居的抗震缺陷，并结合当地实际情况提出相应的改进措施。经现场调查发现，土木结构民居的建筑构造特点具有鲜明的当地特色，存在2种固定的承重体系，土木结构房屋震害可总结为整体倒塌、局部坍塌、墙体的震害、木构件的震害、非承重构件及附属结构的震害。震害主要成因为结构体系不合理、砂浆强度低、房屋整体性差以及缺乏有效抗震构造措施。针对当地土木结构房屋特点，本文提出了针对性地加固改造措施。Abstract: On January 7, 2025, a 6.8-magnitude earthquake struck Dingri in the Xizang Autonomous Region, resulting in 126 fatalities and 188 injuries. The majority of casualties were caused by the collapse of adobe-timber structures, which were either completely destroyed or severely damaged in the meizoseismal area. This paper examines the structural characteristics of these buildings, summarizes typical seismic damage patterns, explores the underlying mechanisms of failure, and discusses structural deficiencies. Based on these findings, appropriate improvement measures tailored to local conditions are proposed. Field investigations revealed that adobe-timber houses in the region exhibit distinct local characteristics, with two primary load-bearing system configurations. Seismic damage was classified into five categories: complete or partial collapse, wall failure, timber damage, non-load-bearing component failure, and accessory structure damage. The widespread destruction was attributed to an irrational structural system, low mortar strength, poor overall integrity, and the absence of effective seismic construction measures. In response, this study proposes targeted reinforcement strategies to enhance the seismic resilience of adobe-timber structures in the region.
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Key words:
- Earthquake /
- Civil structure /
- Characteristics of structure /
- Seismic damage /
- Reinforcement
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图 1 西藏定日6.8级地震烈度图
Figure 1. Seismic intensity map of the MS6.8 earthquake in Dingri, Xizang
图 2 典型土木结构建筑特征
Figure 2. Typical construction characteristics of civil timber structure
表 1 土木结构破坏比
Table 1. Failure ratio of civil structure houses
烈度区 毁坏/% 破坏/% 基本完好/% Ⅸ度区 76.41 23.59 0.00 Ⅷ度区 71.07 28.26 0.67 Ⅶ度区 6.70 64.48 28.82 Ⅵ度区 0.20 53.25 46.55 
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崔玥,杨娜,2023. 藏式山地古建筑结构特征及抗震性能. 建筑结构学报,44(S2):20−31.Cui Y., Yang N., 2023. Structural characteristics and seismic performance of ancient Zang-style architecture on sloped lands. Journal of Building Structures, 44(S2): 20−31. (in Chinese) 冯晓刚,张文彬,李萌等,2024. 藏式传统木结构民居解构与营造研究. 城市建筑,21(21):158−160.Feng X. G., Zhang W. B., Li M., et al., 2024. Research on the deconstruction and construction of Tibetan traditional wooden houses. Urbanism and Architecture, 21(21): 158−160. (in Chinese) 冯一博,2021. 九寨沟景区藏族民居震害及抗震优化策略研究. 成都:西南交通大学.Feng Y. B., 2021. Study on seismic damage and seimic optimization strategy of Tibetan dewllings in Jiuzhaigou scenic area. Chengdu:Southwest Jiaotong University. (in Chinese) 高仕禹,2018. 基于图像分析法的藏式不规则石墙体抗震性能研究. 绵阳:西南科技大学.Gao S. Y., 2018. Experimental study on seismic performance of Tibetan irregular stone wall based on image analysis method. Mianyang:Southwest University of Science and Technology. (in Chinese) 李碧雄,王甜恬,赵开鹏等,2021. 传统藏式民居的典型震害及易损性研究. 建筑结构学报,42(S1):165−173.Li B. X., Wang T. T., Zhao K. P., et al., 2021. Typical earthquake damage of traditional Tibetan dwellings and its vulnerability. Journal of Building Structures, 42(S1): 165−173. (in Chinese) 李朝君,2023. 基于营造技艺调查的滇西北邛笼系建筑谱系研究. 北京:北京交通大学.Li C. J., 2023. A study on the architectural genealogy of Qionglong system in northwest Yunnan based on investigation of construction techniques. Beijing:Beijing Jiaotong University. (in Chinese) 李秋容,2015. 藏式石木结构民居的抗震性能及设防对策. 绵阳:西南科技大学.Li Q. R., 2015. Seismic performance analysis and prevention countermeasures to Tibetan stone-wood dwellings structure. Mianyang:Southwest University of Science and Technology. (in Chinese) 李秋容,周英,2018. 藏式石木结构民居震害形式分析及建议. 黑龙江科学, 9 (16)98−99.Li Q. R., Zhou Y., 2018. Analysis and suggestion of seismic damage forms of Tibetan stone-wood structures. Heilongjiang Science, 9 (16):98−99. (in Chinese) 吕珏,2006. 香格里拉传统“闪片房”的建造与技术更新实践. 昆明:昆明理工大学.Lv J., 2006. Construction and the application of the technique innovation of house with wood block tile in Shangri-la. Kunming:Kunming University of Science & Technology. (in Chinese) 宁昭伟,吴艳,2017. 香格里拉县小中甸镇藏族民居传承与发展调查研究−−以齐小谷村江宅为例. 住区,(1):41−46. doi: 10.3969/j.issn.1674-9073.2017.01.006Ning Z. W., Wu Y., 2017. The survey research on inheritance and development of Tibatan dewlings in Xiaozhongdian, Shangri-La: take Jiang's House as an example. Design Community, (1): 41−46. (in Chinese) doi: 10.3969/j.issn.1674-9073.2017.01.006 潘毅,陈齐,曹勇等,2024. 马尔康6.0级震群地震藏族民居震害调查与分析. 土木工程学报,57(3):1−15.Pan Y., Chen Q., Cao Y., et al., 2024. Seismic damage investigation and analysis of Tibetan dwellings in the M S 6.0 Maerkang earthquake swarm. China Civil Engineering Journal, 57(3): 1−15. (in Chinese) 赵西子,2018. 滇西北藏族传统民居“土掌碉房”营造技艺调查研究. 西安:西安建筑科技大学.Zhao X. Z., 2018. The building techniques and art of the traditional Tibetan vernacular housing “Tuzhangdiaofang” in the northwest Yunnan. Xi’an:Xi’an University of Architecture and Technology. (in Chinese) -
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