基于改进直接刚度法的框架结构地震累积损伤评估
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摘要
通过应用OpenSees有限元软件对同济大学于2003年完成的12层钢筋混凝土标准框架振动台模型试验进行了考虑地震累积效应的数值模拟,同时应用建议的基于改进直接刚度法形成的OpenSees系统识别工具箱对此模型的损伤情况进行了初步评估。将识别结果与试验报告中不同工况下的损伤描述进行对比,发现建议应用的OpenSees系统识别工具箱对空间框架在不同方向上的损伤进行初步评估的方法是可行和有效的。
The numerical simulations for the benchmark test of a 12-story reinforced concrete frame model carried out in Tongji university in 2003 were conducted with the consideration of cumulative effect caused by series of earthquake events in platform of OpenSees.Meanwhile the damage status of the model was evaluated by using the system identification toolbox of OpenSees formed by the principle of the improved direct stiffness method.Through comparison with the damaging description in several cases during the test,it was demonstrated that the preliminary assessment by using the system identification toolbox to conduct damage detection of 3-D frame structures in different direction is feasible and effective.
The numerical simulations for the benchmark test of a 12-story reinforced concrete frame model carried out in Tongji university in 2003 were conducted with the consideration of cumulative effect caused by series of earthquake events in platform of OpenSees.Meanwhile the damage status of the model was evaluated by using the system identification toolbox of OpenSees formed by the principle of the improved direct stiffness method.Through comparison with the damaging description in several cases during the test,it was demonstrated that the preliminary assessment by using the system identification toolbox to conduct damage detection of 3-D frame structures in different direction is feasible and effective.
引文
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[14]Zhang Song.Performance-based seismic design method forRC frame-shear wall structures[D].Shanghai:Tongji Uni-versity,2009.[张松.框架-剪力墙结构基于性能的抗震设计方法[D].上海:同济大学,2009.]
[2]Zhang X,Wong K K F,Wang Y.Performance assessment ofmoment resisting frames during earthquakes based on theforce analogy method[J].Engineering Structures,2007,29(10):2 792-2 802.
[3]Huang Zhihua,Lu Xilin,Zhou Ying,et al.Studies on globalseismic damage indices of high-rise hybrid structures[J].Journal of Tongji University:Natural Science,2010,38(2):170-177.[黄志华,吕西林,周颖,等.高层混合结构地震整体损伤指标研究[J].同济大学学报:自然科学版,2010,38(2):170-177.]
[4]Pakzad S.Statistical approach to structural monitoring usingscalable wireless sensor betworks[D].California:Universityof California at Berkeley,2008.
[5]Zhao Jielin.Present situation and development of studies onearthquake damage in concrete structures[J].SichuanBuilding Science,2007,33(6):138-142.[赵杰林.混凝土结构地震损伤的研究现状及发展趋向[J].四川建筑科学研究,2007,33(6):138-142.]
[6]Gao Lei.A comparative study of structure seismic damageindices[J].Journal of Ningbo University of Technology,2010,22(1):74-79.[高磊.结构损伤指标比较研究[J].宁波工程学院学报,2010,22(1):74-79.]
[7]Li Yongmei,Zhou Xiyuan,Gao Xiangyu.Detection indictorof structural nondestructive damage based on curvature-flexi-bility-difference matrix[J].Engineering Mechanics,2009,26(2):188-195.[李永梅,周锡元,高向芋.基于柔度差曲率矩阵的结构损伤识别法[J].工程力学,2009,26(2):188-195.]
[8]Li Zhongxian,Qi Huaizhan,Zhu Jingsong.Damage identifi-cation for long-span cable-stayed bridge dased on modal cur-vature method[J].Journal of Earthquake Engineering andEngineering Vibration,2007,27(4):122-126.[李忠献,齐怀展,朱劲松.基于模态曲率法的大跨度斜拉桥损伤识别[J].地震工程与工程振动,2007,27(4):122-126.]
[9]Maeck J.Damage assessment of civil engineering structureby vibration monitoring[D].Belgium:Katholieke UniversityLeuven,2003.
[10]Wang Liheng.Studies on non-destructive damage detectionof bridges based on linear and nonlinear dynamic character-istic[D].Beijing:Beijing University of Technology,2006.[王利恒.基于线形及非线性动力特性的桥梁结构非破损检测研究[D].北京:北京工业大学,2006.]
[11]Yang Yang,Zhou Xiyuan,Jin Guofang,et al.Modified di-rect stiffness method for the damage detection of continuousbeam-type structures[J].Engineering Mechanics,2010,27(7):82-91.[阳洋,周锡元,金国芳,等.连续梁结构损伤识别的改进直接刚度方法研究[J].工程力学,2010,27(7):82-91.]
[12]Lu Xilin,Li Peizhen,Chen Yueqing.Benchmark test of a12-story reinforced concrete frame model on shanking table[R].Shanghai:State Key Laboratory of Disaster Preventionin Civil Engineering,Tongji University,2003.[吕西林,李培振,陈跃庆.12层钢筋混凝土标准框架振动台模型试验的完整数据[R].上海:同济大学土木工程与防灾国家重点实验室,2003.]
[13]Zhou Dingsong.Performance-based seismic design methodof RC frame structures[D].Shanghai:Tongji University,2004.[周定松.混凝土框架结构基于性能的抗震设计方法[D].上海:同济大学,2004.]
[14]Zhang Song.Performance-based seismic design method forRC frame-shear wall structures[D].Shanghai:Tongji Uni-versity,2009.[张松.框架-剪力墙结构基于性能的抗震设计方法[D].上海:同济大学,2009.]
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