功率谱法在隔震桥梁抗震分析中的应用研究

唐光武; 高文军; 刘怀林; 宋刚

doi:10.21656/1000-0887.370551

功率谱法在隔震桥梁抗震分析中的应用研究

doi: 10.21656/1000-0887.370551

桥梁工程结构动力学国家重点实验室(招商局重庆交通科研设计院有限公司), 重庆 400067

基金项目: 国家国际科技合作专项项目(2011DFA83300)；国家重点基础研究发展计划(973计划)(2010CB736103)；交通运输部应用基础研究项目(2013319740090)

详细信息

作者简介:
唐光武（1963—），男，研究员，硕士，硕士生导师（E-mail: tangguangwu@cmhk.com）;高文军(1983—)，男，高级工程师，硕士，硕士生导师（通讯作者. E-mail: gaowenjun@cmhk.com）;刘怀林(1978—)，男，副研究员，硕士，硕士生导师（E-mail: liuhuailin@cmhk.com）；宋刚(1980—)，男，副研究员，博士（E-mail: songgang@cmhk.com）.

中图分类号: O32
计量
- 文章访问数: 786
- HTML全文浏览量: 87
- PDF下载量: 909
- 被引次数: 0
出版历程
- 收稿日期: 2016-11-21
- 修回日期: 2017-01-01
- 刊出日期: 2017-01-15

Application of the Power Spectrum Method in Seismic Analysis of Seismic Isolation Bridges

State Key Laboratory of Bridge Structural Dynamics(China Merchants Chongqing Communications Research & Design Institute Co., Ltd. ), Chongqing 400067, P.R.China

Funds: The National Basic Research Program of China (973 Program)(2010CB736103)

摘要

摘要: 隔震桥梁在地震作用下一般要求墩、梁保持弹性，主要通过非线性构件隔震支座耗散地震能量，属于典型的局部非线性问题，目前主要采用反应谱法和非线性时程法进行抗震分析.对功率谱法在隔震桥梁抗震分析中的应用开展研究，通过一具体实例，建立了结构三维动力有限元计算模型，并根据设计加速度反应谱生成与其匹配的设计加速度功率谱，借助虚拟激励法实施了抗震分析，同反应谱法和非线性时程法计算结果进行了对比分析，结果表明功率谱法和反应谱法以及非线性时程法计算结果具有较好的一致性.
- 隔震桥梁 /
- 局部非线性 /
- 功率谱法 /
- 反应谱法 /
- 非线性时程法
Abstract: The seismic performance of isolated bridges requires that the bridge piers should remain elastic under seismic action. The system mainly dissipates earthquake energy through nonlinear isolation bearings, so presents a typical locally nonlinear problem for seismic analysis. At present, the response spectrum method and the nonlinear timehistory method are normally used for seismic analysis of this kind of structures. In this paper, the application of the power spectrum method in seismic analysis of isolated bridges was studied. According to the design acceleration response spectrum, the compatible design acceleration power spectrum was generated at first, and then the seismic response analysis with the power spectrum method through an iteration process was carried out. The results show that the calculated seismic responses of the structure with the power spectrum method and the response spectrum method are in good agreement with each other.
- seismic isolation bridge /
- local nonlinearity /
- power spectrum method /
- response spectrum method /
- nonlinear time history method

HTML全文

参考文献(16)

[1]	中华人民共和国交通运输部. 公路桥梁抗震设计细则: JTG/T B02-01—2008[S]. 北京: 人民交通出版社, 2008.(Ministry of Transport of the People’s Republic of China. Guidelines for seismic design of highway bridges: JTG/T B02-01—2008[S]. Beijing: China Communications Press, 2008.(in Chinese))
[2]	中华人民共和国住房和城乡建设部. 城市桥梁抗震设计规范: CJJ 166—2011[S]. 北京: 中国工业建筑出版社, 2011.(Ministry of Housing and Urban-Rural Development of People’s Republic of China. Code for seismic design of urban bridges: CJJ 166—2011[S]. Beijing: China Architecture & Building Press, 2011.(in Chinese))
[3]	兰海燕. 隔震桥梁设计中组合阻尼比取值的研究现状[J]. 公路交通技术, 2010(5): 56-57, 61.(LAN Hai-yan. Status of study on values of combined damping ratio in design of seismic isolated bridges[J]. Technology of Highway and Transport,2010(5): 56-57, 61.(in Chinese))
[4]	李闯, 叶爱君, 余茂峰. 公路减隔震桥梁的地震反应简化分析[J]. 哈尔滨工程大学学报, 2014,35(11): 1339-1344.(LI Chuang, YE Ai-jun, YU Mao-feng. Simplified analysis on seismic response of seismically isolated highway bridges[J]. Journal of Harbin Engineering University,2014,35(11): 1339-1344.(in Chinese))
[5]	孔德怡, 李黎, 江宜城, 等. 桥梁隔震设计中几种等效线性化方法比较研究[J]. 公路交通科技, 2008,25(2): 73-78.(KONG De-yi, LI Li, JIANG Yi-cheng, et al. Comparative research on equivalent linearization methods in bridge isolation design[J]. Journal of Highway and Transportation Research and Development,2008,25(2): 73-78.(in Chinese))
[6]	朱东生. LRB隔震桥梁地震反应初探[J]. 中国公路学报, 2001,14(4): 47-51.(ZHU Dong-sheng. Study of seismically isolated bridges with LRB[J]. China Journal of Highway and Transport,2001,14(4): 47-51.(in Chinese))
[7]	黄宗明, 白绍良, 赖明. 结构地震反应时程分析中的阻尼问题评述[J]. 地震工程与工程振动, 1996,16(2): 95-105.(HUANG Zong-ming, BAI Shao-liang, LAI Ming. Review on the damping in earthquake response time-history analysis of structures[J]. Earthquake Engineering and Engineering Dynamics,1996,16(2): 95-105.(in Chinese))
[8]	黄宗明, 白绍良, 赖明. 结构地震反应时程分析中的阻尼研究[J]. 土木工程学报, 1998,31(2): 75-79.(HUANG Zong-ming, BAI Shao-liang, LAI Ming. An investigation of damping in earthquake response time history analysis of structures[J]. China Civil Engineering Journal,1998,31(2): 75-79.(in Chinese))
[9]	何利, 叶献国. 不同阻尼模型对框架结构地震反应影响研究[J]. 合肥工业大学学报 (自然科学版),2011,34(7): 1027-1030.(HE Li, YE Xian-guo. Effect of different damping models on seismic response of RC frame structure[J]. Journal of Hefei University of Technology (Natural Science),2011,34(7): 1027-1030.(in Chinese))
[10]	谢靖中. 结构地震反应分析中的阻尼问题探讨[J]. 建筑结构, 2015,45(23): 53-58.(XIE Jing-zhong. Discussion on damping in structural seismic response analysis[J]. Building Structure,2015,45(23): 53-58.(in Chinese))
[11]	American Association of State Highway and Transportation Officials. Guide specifications for seismic isolation design[S]. 3rd ed. Washington DC, 2010.
[12]	胡冗冗, 王亚勇. 地震动瞬时能量与结构最大位移反应关系研究[J]. 建筑结构学报, 2000,21(1): 71-76.(HU Rong-rong, WANG Ya-yong. A study on relation of instantaneous energy of earthquake strong motion and maximum displacement response of structures[J]. Journal of Building Structures,2000,21(1): 71-76.(in Chinese))
[13]	林家浩, 张亚辉. 随机振动的虚拟激励法[M]. 北京: 科学出版社, 2004.(LIN Jia-hao, ZHANG Ya-hui. Pseudo Excitation Method in Random Vibration [M]. Beijing: Science Press, 2004.(in Chinese))
[14]	Kaul M K. Stochastic characterization of earthquakes through their response spectrum[J]. Earthquake Engineering & Structural Dynamics,1978,6(5): 497-509.
[15]	张亚辉, 陈艳, 李丽媛, 等. 桥梁抗震随机响应分析及输入功率谱研究[J]. 大连理工大学学报, 2007,47(6): 786-792.(ZHANG Ya-hui, CHEN Yan, LI Li-yuan, et al. Seismic random vibration analysis of bridges and production of input power spectrum[J]. Journal of Dalian University of Technology,2007,47(6): 786-792.(in Chinese))
[16]	Hall J F. Problems encountered from the use (or misuse) of Rayleigh damping[J]. Earthquake Engineering & Structural Dynamics,2006,35(5): 525-545.