多向地震作用下圆形钢筋混凝土柱损伤评估
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摘要
建立了精细化钢筋混凝土柱模型,采用动力增量分析方法,对多向地震作用下模型的地震反应进行分析。研究建立了柱的损伤指标并得到柱的易损性曲线,给出了对应于不同峰值加速度地震作用下的竖向承载力损失率和易损性等级的共同图线。根据图线可计算构件处于不同破坏状态的超越概率及与其对应竖向剩余承载力。研究表明随着地震强度的提升,竖向承载力损失率将逐渐增大,构件易损性等级也逐渐提高。
The models of reinforced concrete columns were fine established in this paper,and incremental dynamic analysis method was used to study the seismic response of models under multidirectional seismic excitation. In the results of the research,the damage index of the column was established and the vulnerability curve was obtained. In the study,loss rate of vertical bearing capacity corresponding to earthquake with different peak acceleration and vulnerability grade with variety earthquake were obtained and they were show in one figure.According to figure,the exceedance probability and vertical residual bearing capacity corresponding to exceedance probability in different damage state could be calculated. The results show that as the earthquake intensity increased,the loss rate of vertical bearing capacity increased,and the vulnerability grade of the columns increased too.
The models of reinforced concrete columns were fine established in this paper,and incremental dynamic analysis method was used to study the seismic response of models under multidirectional seismic excitation. In the results of the research,the damage index of the column was established and the vulnerability curve was obtained. In the study,loss rate of vertical bearing capacity corresponding to earthquake with different peak acceleration and vulnerability grade with variety earthquake were obtained and they were show in one figure.According to figure,the exceedance probability and vertical residual bearing capacity corresponding to exceedance probability in different damage state could be calculated. The results show that as the earthquake intensity increased,the loss rate of vertical bearing capacity increased,and the vulnerability grade of the columns increased too.
引文
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[3]钟铭.钢筋混凝土柱低周疲劳全过程累积损伤性能简化分析方法[J].土木工程学报,2016(8):84-91.
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[7]周奎,林杰,祝文.基于增量动力分析(IDA)方法的地震易损性工程实例分析[J].地震工程与振动,2016(1):135-140.
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[11]刘祖强,薛建阳,赵鸿铁.型钢混凝土异形柱框架非线性地震反应分析[J].地震工程与工程振动,2016(3):151-161.
[12]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学,2009.
[13]谢丰蔚.地震动记录选择和调幅方法的研究及评价[D].哈尔滨:哈尔滨工业大学,2015.
[14]吴子燕,贾兆平,刘骁骁.基于桥梁经验数据的理论易损性曲线校准[J].应用数学和力学,2014(07):723-736.
[2]陈宗平,徐金俊,薛建阳,等.基于变形和能量双重准则的型钢混凝土异形柱地震损伤行为研究[J].土木工程学报,2015(8):29-37.
[3]钟铭.钢筋混凝土柱低周疲劳全过程累积损伤性能简化分析方法[J].土木工程学报,2016(8):84-91.
[4]丁阳,伍敏,徐龙河.钢筋混凝土柱基于易损性曲线的地震损伤评估[J].工程力学,2012,29(1):81-86.
[5]邵长江,钱永久,潘毅.基于损伤理论的混凝土结构震害评估方法[J].土木工程学报,2013(2):232-236.
[6]杜晓菊,张耀庭.钢筋混凝土构件损伤模型的比较研究[J].地震工程与工程振动,2015(4):222-229.
[7]周奎,林杰,祝文.基于增量动力分析(IDA)方法的地震易损性工程实例分析[J].地震工程与振动,2016(1):135-140.
[8]过镇海.钢筋混凝土原理[M].北京:清华大学出版社,2013(3).
[9]Luccioni BM,Lopez DE,Danesi RF.Bond-slip in reinforced concrete elements[J].Journal of Structural Engineering,2005(11):1690―1698.
[10]Junichi Sakai,Shigeki Unjoh.Shake table experiment on circular reinforced concrete bridge column under multidirectional seismic excitation[C]//Research Frontiers at Structures Congress.American Society of Civil Engineers.2007.
[11]刘祖强,薛建阳,赵鸿铁.型钢混凝土异形柱框架非线性地震反应分析[J].地震工程与工程振动,2016(3):151-161.
[12]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学,2009.
[13]谢丰蔚.地震动记录选择和调幅方法的研究及评价[D].哈尔滨:哈尔滨工业大学,2015.
[14]吴子燕,贾兆平,刘骁骁.基于桥梁经验数据的理论易损性曲线校准[J].应用数学和力学,2014(07):723-736.