摘要
基于2013年4月20日四川芦山MS7.0地震灾区的房屋建筑震害调查资料,初步分析了这次地震中建筑结构的震害特征.结合典型建筑结构震害案例,从抗震概念设计和抗震构造措施的角度对震害机理进行了探讨,总结了结构抗震设计方面的经验和教训并给出了相关的建议.分析表明,农村自建的砖木和土木结构房屋的抗震能力普遍较差;砖混结构和砌体-框架混合结构的抗震性能需要严格的抗震构造措施给予保证,包括合理设置钢筋混凝土构造柱和圈梁,合理设置承重墙的数量以及承重墙上开洞的数量和位置;由于鞭梢效应造成的突出屋顶的楼梯间和加层的破坏需引起重视.
The performance of buildings in the Lushan, Sichuan, MS7.0 earthquake of April 20, 2013, caused a considerable loss of property. The damage mechanism is analyzed from the seismic conceptual design and aseismic measure. Furthermore, the lessons learned from structures and the damage characteristics for typical buildings are summarized. Analysis results show that the seismic resistance capacity of masonry-timber roof truss buildings and adobe-wood buildings are generally very poor in rural areas. Strict earthquake-resistant measures are needed to guarantee the seismic capacity of masonry buildings and masonry-frame hybrid buildings, so that it must be given a reasonable set of reinforced concrete constructional columns, ring beams and a reasonable set of the number of bearing walls as well as the number and location of openings on bearing walls. The damage of outshoot roof staircases and adding story caused by whipping effect should be avoided.
出处
《地震学报》
CSCD
北大核心
2013年第5期749-758,2,共10页
Acta Seismologica Sinica
基金
国家科技支撑项目(2012BAK15B01)
国家自然科学基金青年基金项目(51208476)
地球物理研究所基本科研业务专项(021907
021901)资助
关键词
芦山地震
房屋建筑
震害特征
震害机理
Lushan earthquake
building structures
seismic damage character-istic
seismic damage mechanism
