全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

直接基于位移的连续梁桥目标位移确定方法研究

, PP. 47-56

Keywords: 直接基于位移的抗震设计,目标位移,桥墩侧移曲线,纵桥向,横桥向

Full-Text   Cite this paper   Add to My Lib

Abstract:

目标位移的确定是直接基于位移的结构抗震设计方法的研究重点之一。现有的方法仅考虑了单个桥墩在地震中的反应,不能反映桥梁体系的真实情况。本文应用力学基本原理和塑性铰模型建立了钢筋混凝土桥墩在不同质量分布形式下的以墩底曲率表达的单墩目标位移方程。同时,考虑不同质量分布形式以及桥墩与上部结构连接方式的影响给出了整桥体系纵桥向的目标位移计算方法;对于横桥向,推导了一种简化的估计上部结构位移形状的方程,并依据该方程给出了整桥体系横桥向目标位移的计算方法。该方法的计算结果更贴近结构真实反应,可为结构设计提供更可靠的依据。

References

[1]  Kowalsky M J. Deformation limit states for circular reinforced concrete bridge columns[J]. Journal of Structural Engineering, ASCE, 2000, 126(8): 869-878.
[2]  Priesfley M J ,Seible F,Calvi G M. Seismic design and retrofit of bridges[M]. New York: John Wiley&Sons, 1996.
[3]  Park Y J,Ang A H.Mechanistic seismic damage model for reinforced concrete[J]. Journal of Structural Enginering, ASCE, 1985, lll(4): 722-739.
[4]  Fajfar P. Equivalent ductility factors taking into account low-cycle fatigue[J]. Earthquake Engineering and Structural Dynamics, 1992, 21(10):837-848.
[5]  Hose Y D,Seible F. Performance evaluation database for concrete bridge components and systems under simulated seismic loads. Report No. PEER-1999/11, Pacific Earthquake Engineering Research Center, University of California, Berkeley, 1999.
[6]  Shibata A,Sozen M. Substitute structure method for seismic design in reinforced concrete[J]. Journal of Structural Engineering,ASCE, 1976, 102(1): 1-18.
[7]  Priestley, Calvi,Kowalsky. Displacement-based seismic design of structure[M]. Pavia: IUSS PRESS, 2007.
[8]  Eurocode-8. Design of structures for earthquake resistance.General rules,Seismic Actions and Rules for Buildings[S]. London: British Standards Institution, 2003.
[9]  李廉锟. 结构力学[M]. 北京: 高等教育出版社, 2004. LI Liankun. Structural mechanics[M]. Beijing: Higher Education Press, 2004.(in Chinese)
[10]  Alvarez J C. Displacement based design of continuous concrete bridges under transverse seismic excitation. MSc Thesis, Rose School, IUSS, Pavia, 2004, 99.
[11]  Dwairi H,Kowalsky M J. Implementation of inelastic displacement patterns in direct displacement-based design of continuous bridge structures[J]. Earthquake Spectra, 22(3), 2006, 631-662.
[12]  Priestley M J N,Calvi G M. Direct displacement-based seismic design of bridges//ACI Special Seminar on Seismic Design of Bridges, San Diego, 2003.
[13]  王太川, 金宗官. 多个集中载荷作用下简支梁的挠曲线[J]. 鞍山钢铁学院学报, 1991, 14(1): 36-42. WANG Taichuan, JIN Zongguan. Displacement curve of simply supported beam under several concentrated loads[J]. Journal of Anshan Institute of I&S Technology, 1991, 14(1): 36-42.(in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133