上海浦东国际机场三期扩建工程卫星厅消能减震项目抗震性能化分析
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摘要
上海浦东国际机场卫星厅的中央大厅结构复杂,布置有耗能型屈曲约束支撑,为获得罕遇地震下的结构性能水平以及屈曲约束支撑的耗能情况,采用动力弹塑性时程分析方法对其进行了分析计算。通过动力特性、基底剪力和顶点位移对比分析,验证了模型及计算结果的合理性。根据分析结果可知,层间位移角满足规范要求,构件损伤满足罕遇地震下结构性能设计要求。在罕遇地震下,屈曲约束支撑的耗能优异,不同地震波作用下耗能占比差异较大。将BRB耗能占比最优区间控制在合理的层间位移角范围内,可最大限度地发挥BRB耗能水平。
The structure of the central hall of Shanghai Pudong International Airport satellite hall building is complex,and it is arranged with energy dissipation type buckling-restrained braces. In order to obtain the structural performance level under the rare earthquake and the energy dissipation of buckling-restrained braces(BRB), the dynamic elastic-plastic time-history analysis method was used to analyze and calculate the structure. Through the comparisons of dynamic characteristics,base shear and vertex displacement,the rationality of the model and the calculation results were verified.The calculation results show that the interlayer displacement angle can satisfy the requirement of the code,and the damage of the member meets the design requirements under the rare earthquake. Energy dissipation performance of BRB is excellent under the rare earthquake,and the energy dissipation ratio of BRB greatly varies under actions of different earthquake waves. The energy dissipation level of BRB can be maximized through controlling the optimal interval of BRB energy dissipation ratio within the reasonable range of the interlayer displacement angle.
The structure of the central hall of Shanghai Pudong International Airport satellite hall building is complex,and it is arranged with energy dissipation type buckling-restrained braces. In order to obtain the structural performance level under the rare earthquake and the energy dissipation of buckling-restrained braces(BRB), the dynamic elastic-plastic time-history analysis method was used to analyze and calculate the structure. Through the comparisons of dynamic characteristics,base shear and vertex displacement,the rationality of the model and the calculation results were verified.The calculation results show that the interlayer displacement angle can satisfy the requirement of the code,and the damage of the member meets the design requirements under the rare earthquake. Energy dissipation performance of BRB is excellent under the rare earthquake,and the energy dissipation ratio of BRB greatly varies under actions of different earthquake waves. The energy dissipation level of BRB can be maximized through controlling the optimal interval of BRB energy dissipation ratio within the reasonable range of the interlayer displacement angle.
引文
[1]高层建筑混凝土结构技术规程:JGJ 3—2010[S].北京:中国建筑工业出版社,2011.
[2]李振宝,李长江,马华.静力弹塑性推覆分析研究进展[J].建筑结构,2012,42(S1):157-161.
[3]上海现代建筑设计(集团)有限公司技术中心.动力弹塑性时程分析技术在建筑结构抗震设计中的应用[M].上海:上海科学技术出版社,2013.
[4]李国强,胡宝琳.屈曲约束支撑滞回曲线模型和刚度方程的建立[J].地震工程与工程振动,2007,27(2):26-31.
[5]周小林,雷劲松.屈曲约束支撑力学模型对比分析[J].四川理工学院学报(自然科学版),2015,28(5):21-26.
[6]建筑抗震设计规程:DGJ 08-9—2013[S].上海:上海市建筑建材业市场管理总站,2013.
[7]建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.
[8]高承勇,安东亚.耗能型屈曲约束支撑在结构设计中的合理应用与参数控制[J].建筑结构学报,2016,37(6):69-77.
[2]李振宝,李长江,马华.静力弹塑性推覆分析研究进展[J].建筑结构,2012,42(S1):157-161.
[3]上海现代建筑设计(集团)有限公司技术中心.动力弹塑性时程分析技术在建筑结构抗震设计中的应用[M].上海:上海科学技术出版社,2013.
[4]李国强,胡宝琳.屈曲约束支撑滞回曲线模型和刚度方程的建立[J].地震工程与工程振动,2007,27(2):26-31.
[5]周小林,雷劲松.屈曲约束支撑力学模型对比分析[J].四川理工学院学报(自然科学版),2015,28(5):21-26.
[6]建筑抗震设计规程:DGJ 08-9—2013[S].上海:上海市建筑建材业市场管理总站,2013.
[7]建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.
[8]高承勇,安东亚.耗能型屈曲约束支撑在结构设计中的合理应用与参数控制[J].建筑结构学报,2016,37(6):69-77.