[1]王 飞,康现栋,马洁美,等.基于地震观测的钢框架结构有限元模拟与易损性分析[J].防灾科技学院学报,2018,20(04):16-22.
 WANG Fei,KANG Xiandong,MA Jiemei,et al.Finite Element Simulation and Fragility Analysis for a Steel Frame Structures Based on the Earthquake Recordings[J].JOURNAL OF INSTITUTE OF DISASTER PREVENTION,2018,20(04):16-22.
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基于地震观测的钢框架结构有限元模拟与易损性分析()
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《防灾科技学院学报》[ISSN:1673-8047/CN:13-1377/P]

卷:
第20卷
期数:
2018年04期
页码:
16-22
栏目:
目次
出版日期:
2018-12-31

文章信息/Info

Title:
Finite Element Simulation and Fragility Analysis for a Steel Frame Structures Based on the Earthquake Recordings
文章编号:
1673-8047(2018)04-0016-07
作者:
王 飞1康现栋1马洁美2KalkanErol3
1.北京市地震局,北京 100080; 2.中国地震局地球物理研究所,北京 100081; 3.美国地质调查局,门罗帕克 94025
Author(s):
WANG Fei1 KANG Xiandong1 MA Jiemei2 Kalkan Erol3
1.Beijing Earthquake Administration, Beijing 100080, China; 2.Institute of Geophysics,China Earthquake Administration, Beijing 100080, China; 3. Earthquake Science Center, U. S. GeologicalSurvey, Menlo Park CA 94025, United States
关键词:
地震观测 有限元模拟 增量动力分析 地震动特性 易损性曲线
Keywords:
earthquake observation finite element model simulation incremental dynamic analysis ground motion characteristics fragility curves
分类号:
TU352; P315.91
文献标志码:
A
摘要:
基于性能的抗震设计需要揭示准确有效的地震动参数以满足结构易损性研究的要求。选择开展结构观测的6层钢结构作为分析实例,建立结构有限元模型。以Northridge地震中结构反应记录作为输入开展结构模态和动力反应分析。利用地震记录识别结构的自振特性和位移反应,将识别结果与分析结果进行对比,直至模型分析结果与识别结果吻合,完成有限元模型的标定。选择20条地震动开展结构增量动力分析,将基于PGA和Sa(T1)的顶层位移角分布曲线与Pushover分析曲线进行对比。分析表明Sa(T1)较PGA更适合开展该结构易损性研究。建立Sa(T1)和层间位移角的关系曲线,确定达到某一层间位移角水平的地震动数量,并以此作为计算概率密度函数的依据,构造出Probit概率密度模型,得到该结构达到不同破坏状态的易损性曲线。分析表明钢结构具有良好的抗震性能,适用于地震高风险区的建设工程。
Abstract:
The performance-based seismic design needs to reveal accurate and effective ground motion parameters to meet the requirements of structural vulnerability study. Firstly, we selected a 6-story steel building to build a finite element model, and took the structure response recordings in Northridge earthquake as the input to analyze the structure model and dynamic response. Secondly, we identified the natural vibration characteristics and displacement responses of structures using seismic records, and compared identification results with the analysis results until they tally with each other and completed the calibration of the finite element model. Finally, we selected twenty ground motions for incremental dynamic analysis, and compared the top displacement angular distribution curve based on PGA and Sa(T1)with Pushover analysis curve. It’s shown that Sa(T1)demonstrates a better applicability than PGA for fragility analysis in this building. The relationship curve between Sa(T1)and interlayer displacement angle is established to determine the number of ground motions reaching a certain level of interlayer displacement angle. Based on this, we could calculate the probability density function and construct the Probit probability density model to the fragility curves of the structure under different damage states. The comprehensive analysis shows that the steel structure has good seismic performance and is suitable for construction projects in high-risk areas of earthquakes.

参考文献/References:

[1] 杨溥,李英民,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报, 2000, 33(6):33-37.
[2] 王国新,李宏男,赵真,等. 结构动力反应分析中的地震动输入问题研究[J]. 沈阳建筑大学学报(自然科学版), 2008, 24(6):993-998.
[3] Evangelos I. Katsanos, Anastasios G. Sextos, George D. Manolis. Selection of Earthquake Ground Motion Records: A State-of-the-art Review from a Structural Engineering Perspective [J]. Soil Dynamics and Earthquake Engineering, 2010,(30):157-169.
[4] Chopra A K. Dynamics of structures: Theory and applications to earthquake engineering [M]. 2nd edtion. New Jersey: Prentice Hall, 2001.
[5] 胡聿贤.地震工程学(第2版)[M]. 北京: 地震出版社,2006.
[6] Bertero V. Stength and deformation capacities of buildings under extreme environments. Pister K.S. Structural Engineering and Structural Mechanics, Englewood Cliffs, NJ: Prentice-Hall, 1977:211-255.
[7] Vamvatsikos D, Cornell A. Incremental Dynamic Analysis [J]. Earthquake Engineering and Structural Dynamics, 2002, 31(3): 491-514.
[8] 陆新征,施炜,张万开,等.三维地震动输入对IDA 倒塌易损性分析的影响[J].工程抗震与加固改造,2011,33(6):1-7.
[9] 陆新征,唐代远,叶列平,等. 我国7度设防等跨RC框架抗地震倒塌能力研究[J].地震工程与工程振动,2011,31(5):13-20.
[10] Kunnath S K, Nghiem Q, El-Tawil S. Modeling and Response Prediction in Performance-Based Seismic Evaluation: Case Studies of Instrumented Steel Moment Frame Buildings [J]. Earthquake Spectra, 2004, 20(3): 883-915.
[11] AndersonJ C, Bertero V V. Implications of the Landers and Big Bear Earth-quakes on Earthquake Resistant Design of Structures, Earthquake Engineering Research Center, University of California, Report UCB/EERC-97/08, 1997, Berkeley, CA.
[12] Kunnath S K, Kalkan E. IDA Capacity Curves: The Need for Alternative Intensity Factors[C]. Proc. of the American Society of Civil Engineers, Structures Congress: New York, NY, 2005, April 20-24.

备注/Memo

备注/Memo:
收稿日期:2018-09-19
基金项目:地震科技星火项目(XH17001)
作者简介:王飞(1978—)男,博士, 副研究员,主要从事结构地震反应观测和结构抗震分析方面的研究.
更新日期/Last Update: 2018-12-20