中小学建筑RC框架-砌体混合结构抗震性能
|
摘要
RC框架-砌体混合结构在我国欠发达地区村镇中小学建筑中得到了广泛的应用,但该结构体系受力机理和抗震性能等尚不明确;通过一榀RC框架-砌体混合结构在水平低周反复荷载作用下的试验,考察裂缝的产生、开展和混合结构的破坏形态,分析RC框架-砌体混合结构的延性、耗能能力等抗震性能,研究混合结构的受力全过程和受力机理.结果表明:框架由于刚度较小,加载初期,墙体承担了大部分水平剪力,首先被破坏,墙体破坏后框架承担了大部分荷载,整个混合结构被各个击破.在此基础上,提出了RC框架-砌体混合结构的抗震鉴定和加固建议.
Mixed structure of RC frame and masonry wall is widely used in primary and middle school buildings in underdeveloped areas.But the loading mechanism and the anti-seismic behavior of such structure are not clear.One specimen with one-span RC frame connected with masonry wall was tested under both constant vertical load and horizontal low cyclic load to investigate the crack generating and developing,and structure failure pattern,and to analyze anti-seismic behaviors,such as its ductility,energy-dissipation,etc.The results show that the rigidity of the frame is relatively low in the earthquake,the wall must bear a large part of the shear force,thus it will be destructed firstly,and then the frame undertakes most of the load and will be destructed soon.The entire composite structure was destroyed part by part.Based on the test,some advices are presented for anti-seismic behavior appraiser and strenthening this kind of composite structure.
Mixed structure of RC frame and masonry wall is widely used in primary and middle school buildings in underdeveloped areas.But the loading mechanism and the anti-seismic behavior of such structure are not clear.One specimen with one-span RC frame connected with masonry wall was tested under both constant vertical load and horizontal low cyclic load to investigate the crack generating and developing,and structure failure pattern,and to analyze anti-seismic behaviors,such as its ductility,energy-dissipation,etc.The results show that the rigidity of the frame is relatively low in the earthquake,the wall must bear a large part of the shear force,thus it will be destructed firstly,and then the frame undertakes most of the load and will be destructed soon.The entire composite structure was destroyed part by part.Based on the test,some advices are presented for anti-seismic behavior appraiser and strenthening this kind of composite structure.
引文
[1]任晓崧,翁大根,吕西林.四川灾区砌体结构房屋震害与中小学建筑的抗震设计[J].工程抗震与加固改造,2008,30(4):71-76.Ren Xiaosong,Weng Dagen,L櫣Xilin.Earthquake damage ofmasonry buildings in Sichuan Province and discussion on seismicdesign for primary and middle school buildings[J].EarthquakeResistant Engineering and Retrofitting,2008,30(4):71-76.
[2]綦佳杰.钢筋混凝土-砌体混合结构的抗震性能研究[D].南京:南京工业大学,2006.
[3]姚振纲,刘祖华.建筑结构试验[M].上海:同济大学出版社,1996.
[4]中国建筑工业出版社.工程建设标准规范分类汇编:砌体结构规范、结构试验方法标准[S].北京:中国建筑工业出版社,1997.
[5]中国建筑科学研究院.JGJ101—96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[6]赵淑丽,霍丽云.钢筋混凝土:砌体组合墙结构的分析和应用[J].山西冶金,1999(4):48-50.Zhao Shuli,Huo Liyun.Application and research on composite RC:masonry structure[J].Shanxi Metallurgy,1999(4):48-50.
[7]田玉滨,唐岱新.配筋砌体开洞剪力墙抗震性能的试验研究[J].哈尔滨工业大学学报,2002(4):20-24.Tian Yubin,Tang Daixin.Study of seismic behaviors of rein-forced masonry and shear wall with opening structures[J].Jour-nal of Harbin Institute of Technology,2002(4):20-24.
[8]王本兴,王艳晗,朱杰克.框架填充墙结构体系抗震性能评价[J].中国科技信息,2007(1):47-48.Wang Benxing,Wang Yanhan,Zhu Jieke.Seismic property esti-mate of infilled frame structures[J].China Science and Technolo-gy Information,2007(1):47-48.
[9]王春武.钢筋混凝土框架-砌体墙结构性能的试验研究[J].工程抗震,2007,37(2):27-30.Wang Chunwu.An experimental investigation on the structural be-havior of reinforced concrete frame-masonry wall[J].EarthquakeResistant Engineering,2007,37(2):27-30.
[10]魏书华.钢筋混凝土-砖组合砌体结构在抗震设防中的应用[J].华北地震科学,2006,24(3):44-46.Wei Shuhua.Application of ferroconcrete and brick combiningstructure in a seismic design[J].North China Earthquake Sci-ences,2006,24(3):44-46.
[2]綦佳杰.钢筋混凝土-砌体混合结构的抗震性能研究[D].南京:南京工业大学,2006.
[3]姚振纲,刘祖华.建筑结构试验[M].上海:同济大学出版社,1996.
[4]中国建筑工业出版社.工程建设标准规范分类汇编:砌体结构规范、结构试验方法标准[S].北京:中国建筑工业出版社,1997.
[5]中国建筑科学研究院.JGJ101—96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[6]赵淑丽,霍丽云.钢筋混凝土:砌体组合墙结构的分析和应用[J].山西冶金,1999(4):48-50.Zhao Shuli,Huo Liyun.Application and research on composite RC:masonry structure[J].Shanxi Metallurgy,1999(4):48-50.
[7]田玉滨,唐岱新.配筋砌体开洞剪力墙抗震性能的试验研究[J].哈尔滨工业大学学报,2002(4):20-24.Tian Yubin,Tang Daixin.Study of seismic behaviors of rein-forced masonry and shear wall with opening structures[J].Jour-nal of Harbin Institute of Technology,2002(4):20-24.
[8]王本兴,王艳晗,朱杰克.框架填充墙结构体系抗震性能评价[J].中国科技信息,2007(1):47-48.Wang Benxing,Wang Yanhan,Zhu Jieke.Seismic property esti-mate of infilled frame structures[J].China Science and Technolo-gy Information,2007(1):47-48.
[9]王春武.钢筋混凝土框架-砌体墙结构性能的试验研究[J].工程抗震,2007,37(2):27-30.Wang Chunwu.An experimental investigation on the structural be-havior of reinforced concrete frame-masonry wall[J].EarthquakeResistant Engineering,2007,37(2):27-30.
[10]魏书华.钢筋混凝土-砖组合砌体结构在抗震设防中的应用[J].华北地震科学,2006,24(3):44-46.Wei Shuhua.Application of ferroconcrete and brick combiningstructure in a seismic design[J].North China Earthquake Sci-ences,2006,24(3):44-46.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心