2025年缅甸7.9级地震木结构震害调查及启示
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P315

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Inspiration and Analysis on Seismic Damage of Timber Structure in the 2025 Myanmar M7.9 Earthquake
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    摘要:

    2025年3月28日缅甸发生7.9级地震, 木结构是缅甸乡镇地区数量最多的建筑结构形式, 通过对灾区实地调查发现, 在本次地震中木结构表现出良好的抗震性能, 受灾地区绝大多数木结构未出现明显的震害现象。本文详细介绍了缅甸木结构的结构特征, 总结了木结构出现的震害现象并进行分析, 木结构在本次地震中出现的主要震害现象有倒塌、局部倒塌、节点受损、木构件破坏、填充墙开裂。同时, 分析了木结构在本次地震中震害不严重的原因, 并与云南省木结构进行对比, 总结了本次地震中所获得的经验启示, 以期为我国木结构抗震能力的提升提供思路。

    Abstract:

    A moment magnitude 7.9 earthquake struck Myanmar on 28th March, 2025. Timber structures constitute the predominant building type in rural areas of Myanmar, and observations from this earthquake indicate that they exhibited generally good seismic performance. Post-earthquake field investigations show that most timber structures did not suffer obvious seismic damage. This paper introduces the structural characteristics of traditional timber buildings in Myanmar and systematically summarizes and analyzes their seismic damage features. The principal observed damage modes include complete or partial collapse, joint damage, damage to timber members, and cracking of infilled walls. Furthermore, this study analyzes the underlying reasons for the relatively minor seismic damage observed in timber structures, focusing on structural configuration, material properties, and construction practices. A comparative analysis between timber structures in Myanmar and those in Yunnan Province, China, is conducted to identify similarities and key differences in seismic behavior. Based on the lessons learned from this earthquake, practical insights and recommendations are proposed to improve the seismic performance of timber structures in Yunnan Province.

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叶阳,明小娜,杨健强,张方浩,阿拉塔.2025年缅甸7.9级地震木结构震害调查及启示[J].中国地震,2025,41(4):656-672

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  • 收稿日期:2025-05-29
  • 最后修改日期:2025-10-01
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  • 在线发布日期: 2026-02-10
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