摘要
为分析2023年甘肃省积石山县发生的M_(s)6.2级给周边临近省份的村镇房屋造成的震害情况,对青海省地震烈度为Ⅵ~Ⅷ度区域的多个乡镇建筑进行了调查。结果表明:民居木结构、公建混凝土框架结构、新建单层砌体结构和经正规设计建造的多层砌体结构震害较轻,老旧砌体结构和底部内框架砌体结构破坏严重;其中,木结构出现拔榫、倾斜和开裂破坏;框架结构填充墙出现大面积剪切开裂,少量梁柱节点出现开裂损伤;多层砌体结构首层承重墙体出现不同程度剪切开裂;老旧砌体结构和底部内框架砌体结构承重墙体出现严重剪切开裂。针对不同的震害特征,建议灾后重建应选用抗震性能较好的结构并加强抗震措施;框架结构在设计时中应合理布置填充墙;多层砌体结构应加强抗震构造措施,提高砌筑砂浆强度并控制施工质量,既有轻微开裂的墙体应采用合理的加固措施;加强农村地区抗震科普宣传,灾后重建或加固应落实抗震措施。
In order to analyze the earthquake damage caused by M_(s)6.2 in Jishishan County of Gansu Province in 2023 to rural houses in neighboring provinces,a number of township buildings in the area with seismic intensity ofⅥ~Ⅷin Qinghai Province were investigated.The results show that the seismic damage of the timber structure of residential buildings,the concrete frame structure of public buildings,the new single⁃layer masonry structure and the multi⁃layer masonry structure constructed by the regular design are relatively light,and the old masonry structure and the bottom inner frame masonry structure are seriously damaged.Among them,the wood structure appears tenon pull,tilt and cracking damage.The infilled wall of the frame structure has a large area of shear cracking,and a small number of beam⁃column joints have cracking damage.The first floor bearing wall of multi⁃layer masonry structure has different degrees of shear cracking.Serious shear cracking occurred in the load⁃bearing wall of the old masonry structure and the bottom inner frame masonry structure.According to different seismic damage characteristics,it is suggested that the structure with better seismic performance should be selected for post⁃disaster reconstruction and seismic measures should be strengthened.The infilled wall should be reasonably arranged in the design of the frame structure.The multi⁃layer masonry structure should strengthen the anti⁃seismic construction measures,improve the strength of masonry mortar and control the construction quality,and the existing slightly cracked wall should adopt reasonable reinforcement measures.The propaganda of seismic science in rural areas should be strengthend,and post⁃disaster reconstruction or reinforcement should implement seismic measures.
作者
胡晓锋
安占义
张风亮
李凯
周庚敏
张瑶
李东
杨飞宏
HU Xiaofeng;AN Zhanyi;ZHANG Fengliang;LI Kai;ZHOU Gengmin;ZHANG Yao;LI Dong;YANG Feihong(Shaanxi Limited Institute of Architecture Science,Xi’an 710082,China;Shaanxi Construction Engineering Quality Testing Center Co.,Ltd.,Xi’an 710082,China;Shaanxi Jianke Construction Special Engineering Co.,Ltd.,Xi’an 710082,China)
出处
《建筑结构》
北大核心
2025年第14期23-29,共7页
Building Structure
基金
陕西省“两链”融合重点研发计划(2022LL-B-12)
陕西省省级国有资本经营预算科技创新专项资金项目(ZXZJ-2024-015)
陕西省建筑科学研究院科研项目(2023-11-458、2023-1-468、2021-11-370)。
关键词
积石山地震
震害调查
框架结构
砌体结构
木结构
底部内框架砌体结构
Jishishan earthquake
seismic damage investigation
frame structure
masonry structure
timber structure
bottom inner frame masonry structure
