带刚度退化的一种自复位混凝土桥墩简化分析模型

删除或更新信息，请邮件至freekaoyan#163.com(#换成@)

清华大学辅仁网/2017-07-07

刘晖¹, 何铭华¹, 辛克贵¹, 郭佳², 刘文¹

1. 清华大学土木工程系, 北京 100084;
2. 交通运输部公路科学研究所, 北京 100088

Simplified theoretical model for self-centering concrete bridge piers with stiffness deterioration

LIU Hui¹, HE Minghua¹, XIN Kegui¹, GUO Jia², LIU Wen¹

1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
2. Research Institute of Highway, Ministry of Transport, Beijing 100088, China

摘要:

输出: BibTeX | EndNote (RIS)

摘要自复位混凝土桥墩(SCCP)能够在抵御强震后有效控制残余变形,是一种具备优良抗震性能的新型桥墩体系。该文针对新型自复位混凝土桥墩,提出一种自复位混凝土桥墩损伤演化过程的简化分析模型,系统地描述了循环加载过程中滞回曲线的各个主要环节。在损伤演化分析中,通过引入3个损伤因子γ_u、γ_c和γ_r,阐明循环增大的侧向位移可能导致的3种损伤来源。通过与既有的试验数据的对比分析,验证了该文提出的简化分析模型的准确性和有效性。

关键词 ：简化分析模型,自复位混凝土桥墩(SCCP),损伤因子,刚度退化

Abstract：Self-centering concrete bridge piers (SCCP), which have been used to retrofit bridge piers to give better seismic response, effectively reduce residual displacements during severe earthquakes. This study gives a simplified theoretical model for self-centering concrete bridge piers including a stiffness deterioration analysis and lateral force-displacement analysis. The stiffness deterioration analysis introduces 3 damage factors for γ_u, γ_c and γ_r. These damage factors illustrate the damage caused by increasing lateral displacements. The theoretical model has been validated against existing experimental data with good agreement.

Key words：simplified theoretical model self-centering concrete bridge piers (SCCP)damage factors stiffness deterioration

收稿日期: 2012-12-12 出版日期: 2016-05-09

ZTFLH:

TU375.3

通讯作者:何铭华,助理研究员,E-mail:heminghua@mail.tsinghua.edu.cnE-mail: heminghua@mail.tsinghua.edu.cn

引用本文:

刘晖, 何铭华, 辛克贵, 郭佳, 刘文. 带刚度退化的一种自复位混凝土桥墩简化分析模型[J]. 清华大学学报（自然科学版）, 2016, 56(4): 341-347.
LIU Hui, HE Minghua, XIN Kegui, GUO Jia, LIU Wen. Simplified theoretical model for self-centering concrete bridge piers with stiffness deterioration. Journal of Tsinghua University(Science and Technology), 2016, 56(4): 341-347.

链接本文:

http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.24.001或 http://jst.tsinghuajournals.com/CN/Y2016/V56/I4/341

图表:

图１　典型的“旗帜型”滞回模型

图２　简化分析模型的多阶段水平荷载位移曲线

图３　新型自复位混凝土桥墩的简化分析模型

表１　循环加载各阶段等效侧向刚度和基本描述

图４　桥墩试验构件

图５　试验研究结果和简化分析模型结果的对比

参考文献:

[1] 刘爱文, 夏珊, 徐超. 汶川地震交通系统震害及震后抢修[J]. 震灾防御技术, 2008, 3(3):243-250.LIU Aiwen, XIA Shan, XU Chao. Damage and emergency recovery of the transportation systems after Wenchuan Earthquake[J].Technology for Earthquake Disaster Prevention, 2008, 3(3):243-250. (in Chinese)
[2] Kawashima K. The 1996 Japanese seismic design specifications of highway bridges and the performance based design[C]//Seismic Design Methodologies for the Next Generation of Codes. Bled, Slovenia:Balkema, 1997:371-382.
[3] MacRae G A, Kawashima K. Post-earthquake residual displacements of bilinear oscillators[J]. Earthquake Engineering & Structural Dynamics, 1997, 26(7):701-716.
[4] Pampanin S, Christopoulos C, Priestley M J N. Residual deformations in the performance-based seismic assessment of frame structures[C]//European School for Advanced Studies on Reduction of Seismic Risk. Pavia, Italy:IUSS Press, 2002.
[5] Christopoulos C, Pampanin S. Towards performance-based design of MDOF structures with explicit consideration of residual deformations[J]. ISET Journal of Earthquake Technology, 2004, 41(1):53-73.
[6] Palermo A, Pampanin S, Calvi G M. Concept and development of hybrid solutions for seismic resistant bridge systems[J]. Journal of Earthquake Engineering, 2005, 9(6):899-921.
[7] Bazzurro P, Cornell C, Menun C, et al. Guidelines for seismic assessment of damaged buildings. (2012-02-01), http://www.iitk.ac.in/nicee/wcee/article/13_1708.pdf.
[8] Luco N, Bazzurro P, Cornell C, et al. Dynamic versus static computation of the residual capacity of a mainshock-damaged building to withstand an aftershock. (2012-02-01), http://www.iitk.ac.in/nicee/wcee/article/13_1708.pdf.
[9] Ruiz-Garcia J, Miranda E. Residual displacement ratios for assessment of existing structures[J]. Earthquake Engineering & Structural Dynamics, 2006, 35(3):315-336.
[10] 郭佳, 辛克贵, 何铭华, 等. 自复位桥梁墩柱结构抗震性能试验研究与分析[J]. 工程力学, 2012, 29(增刊I):29-34.GUO Jia, XIN Kegui, HE Minghua, et al. Experimental study and analysis on the seismic performance of a self-centering bridge pier[J]. Engineering Mechanics, 2012, 29(Suppl I):29-34. (in Chinese)
[11] Billington S L, Yoon J K. Cyclic response of unbonded posttensioned precast columns with ductile fiber-reinforced concrete[J]. Journal of Bridge Engineering, 2004, 9(4):353-363.
[12] Palermo A, Pampanin S. Enhanced seismic performance of hybrid bridge systems:Comparison with traditional monolithic solutions[J]. Journal of Earthquake Engineering, 2008, 12(8):1267-1295.
[13] Marriott D, Pampanin S, Palermo A. Quasi-static and pseudo-dynamic testing of unbonded post-tensioned rocking bridge piers with external replaceable dissipaters[J]. Earthquake Engineering & Structural Dynamics, 2009, 38(3):331-354.
[14] Lee W K, Billington. Performance-based earthquake engineering assessment of a self-centering, post-tensioned concrete bridge system[J]. Earthquake Engineering & Structural Dynamics, 2011, 40(8):887-902.
[15] Pollino M, Bruneau M. Seismic retrofit of bridge steel truss piers using a controlled rocking approach[J]. Journal of Bridge Engineering, 2007, 12(5):600-610.
[16] Ou Y C, Chiewanichakorn M, Aref A J, et al. Seismic performance of segmental precast unbonded posttensioned concrete bridge columns[J]. Journal of Structural Engineering, 2007, 133(11):1636-1647.
[17] 何铭华, 辛克贵, 郭佳. 新型自复位桥梁墩柱节点的局部稳定性研究[J]. 工程力学, 2012, 29(4):122-127.HE Minghua, XIN Kegui, GUO Jia. Local stability study of new bridge piers with self-centering joints[J]. Engineering Mechanics, 2012, 29(4):122-127. (in Chinese)
[18] Raynor D J, Lehman D E, Stanton J F. Bond-slip response of reinforcing bars grouted in ducts[J]. ACI Structure. Journal, 2002, 99(5):568-576.
[19] JTG/T B02-01-2008. 公路桥梁抗震设计细则[S]. 北京:人民交通出版社, 2008.JTG/T B02-01-2008. Guidelines for Seismic Design of Highway Bridges[S]. Beijing:China Communications Press, 2008. (in Chinese)
[20] 郭佳, 辛克贵, 何铭华, 等. 自复位桥梁墩柱节点分析模型研究[C]//第20届全国结构工程学术会议论文集. 宁波:中国力学学会, 2011.GUO Jia, XIN Kegui, HE Minghua, et al. An analytical model of a self-centring bridge pier system[C]//Proceedings of the 20th China Conference on Structural Engineering. Ningbo:Chinese Society of Theoretical and Applied Mechanics, 2011. (in Chinese)

No related articles found!