压型钢板支撑加固RC框架Pushover分析
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摘要
为了研究压型钢板支撑加固钢筋混凝土(RC)框架的抗震性能,选取某小学教学楼进行加固前、后模型Pushover分析。分别对塑性铰分布、Pushover曲线、延性和刚度退化曲线进行对比,分析结果表明,加固后教学楼的最大承载力提高了154.18%,延性提高了4.08%,初始刚度提高了25.48%,极限刚度提高了447.48%。压型钢板支撑加固方法能显著提高教学楼的承载力和抗侧刚度,增强了教学楼的抗震能力。
A primary school building was choosen to establish the models by Pushover analysis in order to research the seismic performance of RC frames reinforced by profiled steel sheet bracing. Plastic hinge distribution,Pushover curves,ductility and rigidity degeneration curves were compared with each other by analysis. The results show that the ultimate bearing capacity of strengthened building increases by 154. 18%,the ductility by 4. 08%,initial stiffness by 25. 48%,and ultimate stiffness by 447. 48%. The strengthening method can improve the bearing capacity and lateral stiffness of the building. At the same time,the strengthening method can enhance seismic capacity of the building.
A primary school building was choosen to establish the models by Pushover analysis in order to research the seismic performance of RC frames reinforced by profiled steel sheet bracing. Plastic hinge distribution,Pushover curves,ductility and rigidity degeneration curves were compared with each other by analysis. The results show that the ultimate bearing capacity of strengthened building increases by 154. 18%,the ductility by 4. 08%,initial stiffness by 25. 48%,and ultimate stiffness by 447. 48%. The strengthening method can improve the bearing capacity and lateral stiffness of the building. At the same time,the strengthening method can enhance seismic capacity of the building.
引文
[1]樊海涛,王志鑫,赵黄娟,等.带X型支撑钢筋混凝土框架结构抗震性能分析[J].建筑科学与工程学报,2013,30(2):35-41.
[2]史铁花,陆加国,程绍革,等.框架结构填充抗震墙或带框钢支撑抗震加固振动台试验研究[J].建筑结构,2015,45(14):1-7.
[3]赵宝建.内填Y形钢支撑的高层钢筋混凝土框架非线性时程分析[D].苏州:苏州科技学院,2011.
[4]刘利娜,赵宝成.Y型偏心钢支撑加固RC框架设计方法研究[J].苏州科技学院学报(工程技术版),2014,27(2):42-46.
[5]SAFARIZKI H A,KRISTIAWAN S A,BASUKI A.Evaluation of the use of steel bracing to improve seismic performance of reinforced concrete building[J].International Conference on Rehabilitation&Maintenance in Civil Engineering,2013,54(3):447-456.
[6]CAO PINGZHOU,FENG NINGNING,WU KAI.Experimental study on infilled frames strengthened by profiled steel sheet bracing[J].Steel and Composite Structures,2014,17(6):777-790.
[7]FENG NINGNING,CAO PINGZHOU,WU KAI,et al.Experimental investigation on strengthening of infilled frame structures by profiled steel sheet shear walls[J].Advances in Structural Engineering,2016,19(4):703-714.
[8]建筑抗震设计规范:GBJ 11—89[S].北京:中国建筑工业出版社,1989.
[9]建筑结构荷载规范:GB 50009—2001[S].北京:中国建筑工业出版社,2001.
[10]建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.
[2]史铁花,陆加国,程绍革,等.框架结构填充抗震墙或带框钢支撑抗震加固振动台试验研究[J].建筑结构,2015,45(14):1-7.
[3]赵宝建.内填Y形钢支撑的高层钢筋混凝土框架非线性时程分析[D].苏州:苏州科技学院,2011.
[4]刘利娜,赵宝成.Y型偏心钢支撑加固RC框架设计方法研究[J].苏州科技学院学报(工程技术版),2014,27(2):42-46.
[5]SAFARIZKI H A,KRISTIAWAN S A,BASUKI A.Evaluation of the use of steel bracing to improve seismic performance of reinforced concrete building[J].International Conference on Rehabilitation&Maintenance in Civil Engineering,2013,54(3):447-456.
[6]CAO PINGZHOU,FENG NINGNING,WU KAI.Experimental study on infilled frames strengthened by profiled steel sheet bracing[J].Steel and Composite Structures,2014,17(6):777-790.
[7]FENG NINGNING,CAO PINGZHOU,WU KAI,et al.Experimental investigation on strengthening of infilled frame structures by profiled steel sheet shear walls[J].Advances in Structural Engineering,2016,19(4):703-714.
[8]建筑抗震设计规范:GBJ 11—89[S].北京:中国建筑工业出版社,1989.
[9]建筑结构荷载规范:GB 50009—2001[S].北京:中国建筑工业出版社,2001.
[10]建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.