戴必辉，陶忠，叶燎原，高永林，皇甫双娥

摘   要：墨江M5.9地震極震区烈度达到Ⅷ度. 地震也是对该地区近年来农村危房改造成效的一次集中检验. 为验证农危改工作实施成效，总结农房加固改造震害经验，首先，根据该区域强震动观测记录，从地面峰值加速度衰减规律和地震波频谱特性方面对地震动特性进行分析;然后，在震害调查的基础上，结合灾区建筑结构特点对Ⅶ度区、Ⅷ度区农房震害特征进行阐述，对农危改房屋在地震中的表现进行对比分析并总结震害经验;最后，结合本次震害调查从加强地震观测、加大力度推进农村危房改造、推广新技术新材料运用和重视震害调查等方面，对提高农房抗震防灾能力提出建议.

关键词：墨江M5.9地震;震害分析;农房;抗震加固

中图分类号：P316;TU366               文献标志码：A

Investigation and Analysis of Seismic Damage to the Renovated

Rural Dilapidated Residences in Mojiang M5.9 Earthquake

DAI Bihui1，2，TAO Zhong1，3？覮，YE Liaoyuan4，GAO Yonglin1，HUANGFU Shuange1

（1. Faculty of Civil Engineering and Mechanics，Kunming University of Science and Technology，Kunming 650500，China;

2. Faculty of Civil Engineering，Southwest Forestry University，Kunming 650224，China;

3. Earthquake Engineering Researching Center of Yunnan，Kunming 650500，China;

4. Yunnan Normal University，Kunming 650500，China）

Abstract：The seismic intensity of the meizoseismal area reached Ⅷ degrees in Mojiang M5.9 earthquake in Yunnan province，which was an intensive inspection to the results of renovation of the dilapidated rural residences. In order to verify the effectiveness of the renovation of dilapidated rural houses and summarize the seismic damage experience of the fortified farmhouses，the following work is done in this paper. Firstly，the ground motion characteristics are analyzed from the attenuation law of ground peak acceleration and the spectrum characteristics of seismic waves according to the observation records of strong vibration in this region. And then，on the basis of seismic damage investigation，combined with the characteristics of the architecture and structure，the characteristics of the seismic damage of rural houses in the areas with earthquake intensities of Ⅶ and Ⅷ degrees were elaborated，the performance of the reinforced dilapidated rural houses in the earthquake was compared and analyzed，and the experience of seismic damage was summarized. Finally，combined with the investigations of seismic disasters，some suggestions are put forward to improve the earthquake resistance of rural houses from the aspects of strengthening earthquake observation，increasing efforts to promote the renovation of rural dilapidated houses，promoting the use of new technologies and new materials，and attaching importance to seismic damage surveys.

Key words：Mojiang M5.9 earthquake;seismic hazard analysis;rural houses;seismic reinforcement requirements

我国地震灾害频发，地震区域分布广阔，GB 18306—2015《中国地震动参数区划图》（以下简称“第五代区划图”）施行后，地震动峰值加速度小于0.05g（即Ⅵ度）的分区不再出现，设防烈度Ⅶ度及以上的地区占国土面积达58%[1]，其中超过80%的5级以上地震发生在农村地区. 由于长期以来农房建设并未完全纳入我国的建筑抗震管理体系，缺乏统一科学的规划、设计、建造和监管[2]，导致现役农房抗震能力普遍較低，这种现象在欠发达的西部地区尤为突出，长期居住使原本抗震性能不佳的农房在环境因素和人为因素的侵蚀及破坏下变成危房，对居民安全造成巨大威胁. 当大地震来临时……