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基于IDA的高墩大跨桥梁抗震性能评估

, PP. 68-77

Keywords: 高墩大跨桥梁,增量动力分析,性能评估,曲率分布,目标位移

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Abstract:

高墩桥梁的地震响应与传统的中低墩桥梁有很大差别,我国现行桥梁抗震规范对此没有规定。为了合理评估高墩大跨桥梁的抗震性能,以一座连续刚构桥为研究对象,采用OpenSees建立弹塑性有限元动力分析模型,从PEER地震数据库中选取了15条地震记录进行增量动力分析(Incrementaldynamicanalysis,IDA),利用Ramberg-Osgood函数对控制参数进行统计,从而得到了结构概率分位值为10%、50%和90%的IDA曲线,结合定义的损伤状态对结构的抗震性能进行了评估;根据墩身最大曲率分布得到了塑性区域长度,提出了根据最大曲率分布估算墩顶目标位移的方法。结果表明利用R-O函数统计得到的IDA概率分位曲线能很好地体现桥梁抗震性能,并能给出满足相应性能水准的可靠等级。在强震作用下,高墩结构塑性区域长度与各国规范计算结果吻合,按墩身最大曲率分布估算墩顶位移与IDA分析结果吻合较好,弥补了规范的不足。

References

[1]  JTG/TB02-01-2008公路桥梁抗震设计细则[S]. JTG/TB02-01-2008 Guidelines for Seismic Design of Highway Bridges[S].(in Chinese)
[2]  范立础, 卓卫东. 桥梁延性抗震设计[M]. 北京: 人民交通出版社, 2001: 88-90. FAN Lichu,ZHUO Weidong.Ductility seismic design of bridge[M].Beijing:China Communication Press.2001:88-90.(in Chinese)
[3]  梁智?.非规则高墩桥梁抗震设计理论研究. 上海: 同济大学, 2005. LIANG Zhiyao.Seismic design theory research of irregular girder bridge.Shanghai:Tongji University,2005.(in Chinese)
[4]  李建中, 宋晓东, 范立础. 桥梁高墩位移延性能力的探讨[J]. 地震工程与工程振动, 2005, 25(1): 40-48.(in Chinese) LI Jianzhong, SONG Xiaodong, FAN Lichu. Investigation for displacement ductility capacity of tall piers [J].Journal of Earthquake Engineering and Engineering vibration, 2005,25(1):40-48.(in Chinese)
[5]  汪梦甫, 曹秀娟, 孙文林. 增量动力分析方法的改进及其在高层混合结构地震危害评估中的应用[J]. 工程抗震与加固改造, 2010, 32(1): 104-109. WANG Mengfu, CAO Xiujuan, SUN Wenlin. Incremental dynamic analysis applied to seismic risk assessment of hybrid structure [J]. Earthquake Resistant and Retrofitting, 2010, 32(1): 104-109.(in Chinese)
[6]  Dimitrios Vamvatsikos, C Allin Cornell. Incremental dynamic analysis [J]. Earthquake Engineering And Structural Dynamics, 2002, 31: 491-514.
[7]  John B Mander, Rajesh P Dhakal, Naoto Mashiko, et al.Incremental dynamic analysis applied to seismic financial risk assessment of bridges [J]. Engineering Structures, 2007, 29(10): 2662-2672.
[8]  FEMA. NEHRP Guideline for seismic rehabilitation of buildings. Report No.FEMA-273, SAC Joint Venture, Federal Emergency Management Agency, Washington.DC, 1997.
[9]  陆本燕, 刘伯权, 吴 涛, 等. 基于RC桥梁墩柱的地震损伤模型比较分析[J]. 土木工程学报, 2010, 43(S1): 186-191. LU Benyan, LIU Boquan, WU Tao, et al. Comparative analysis of seismic damage models for reinforced concrete bridge piers [J]. China Civil Engineering Journal, 2010,43(S1): 186-191.(in Chinese)
[10]  http://peer.berkeley.edu/OpenSeesNavigator/
[11]  王建民, 王国亮, 聂建国, 等. 基于概率的桥梁结构地震危害性分析[J]. 土木工程学报, 2010, 43(11): 86-93. WANG Jianmin, WANG Guoliang, NIE Jianguo, et al. Probability based seismic risk analysis of bridge structures [J]. China Civil Engineering Journal, 2010, 43(11): 86-93.(in Chinese)
[12]  Shome N,Cornell C A. Probabilistic seismic demand analysis of nonlinear structures. Report No. RMS-35, RMS Program. Stanford University, Stanford, CA, 1999.
[13]  李立峰, 吴文朋, 黄佳梅,等. 板式橡胶支座地震易损性分析[J].湖南大学学报,2011,38(11):1-6. LI Lifeng, WU Wenpeng, HUANG Jiamei et al.Research on seismic vulnerability analysis of laminated rubber bearing[J]. Journal of Hunan University. 2011,38(11):1-6.(in Chinese)
[14]  California Department of Transportation. Seismic Design Criteria Version 1.5[S].

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