|
|
|
| Evaluation of Seismic Vulnerability of Reinforced Concrete Circular Hollow High-piers |
| ZHOU Chang-dong, CHEN Jing, ZENG Xu-lang, LIU Bin |
| Beijing Jiaotong University, Beijing 100044, China |
|
|
|
Abstract Research purposes:Cross-section form has a great impact on the mechanical properties of the pier of railway bridges, and hollow concrete high-piers show obvious superiority. However, the research of the seismic behavior for reinforced concrete (RC) circular hollow high-pier needs to be further carried out. The curvatures of the control section of the circular hollow high-pier corresponding to the material damage are chosen as a damage status. This paper presents seismic response of RC circular hollow high-pier under 15 earthquake ground motion records using incremental dynamic analysis, proposes the probability of expected damage modes forms the vulnerability curves, studies the seismic performance of circular concrete high-piers.
Research conclusions:The following conclusions can be got from the above analysis: (1) The damage area of RC circular hollow high-pier appears not only at the bottom of the pier but also in the middle of the pier and on the top of the pier under the earthquake, but the vulnerability at the bottom of the pier is higher than that of other areas; (2)The probability of the complete injury is small, and it indicates that the seismic performance of the RC circular hollow high-pier is good; (3) The seismic vulnerability analysis of circular hollow high pier provide theoretical basis for seismic performance research of the practical engineering.
|
|
Received: 09 June 2014
|
|
|
|
|
|
[1] 王菲,田山坡,禚一. 高墩大跨连续刚构桥的稳定性分析[J]. 铁道工程学报, 2012(10):57-62.
Wang Fei,Tian Shanpo,Zhuo Yi. Analysis of Stability of Long-span Continuous Rigid Frame Bridge with High Pier[J]. Railway Engineering Society, 2012(10):57-62.
[2] 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(1):40-48.
Li Jianzhong, Song Xiaodong, Fan Lichu. Investigation for Displacement Ductility Capacity of Tall Piers[J]. Earthquake Engineering and Engineering Vibration, 2005(1):40-48.
[3] 夏修身,陈兴冲,王常峰. 铁路高墩弹塑性地震反应分析[J]. 世界地震工程, 2008(2):117-121.
Xia Xiushen, Chen Xingchong, Wang Changfeng. Nonlinear Seismic Response of the Tall RC Piers of Railway Bridges[J]. World Earthquake Engineering, 2008(2):117-121.
[4] 卢皓,管仲国,李建中. 高阶振型对高墩桥梁抗震性能的影响及识别[J]. 振动与冲击, 2012(17):81-98.
Lu Hao, Guan Zhongguo, Li Jianzhong. Effect of Higher Modal Shapes on Aseismic Performance of a Bridge with High Piers and Its Identification [J]. Journal of Vibration and Shock, 2012(17):81-98.
[5] 梁智垚. 非规则高墩桥梁抗震设计理论研究[D]. 上海:同济大学, 2007.
Liang Zhiyao. Seismic Design Theory Research of Irregular Girder Bridges with High Piers[D]. Shanghai: Tongji University, 2007.
[6] 王慧东. 桥梁墩台与基础工程[M]. 北京:中国铁道出版社, 2005.
Wang Huidong. Bridge Pier and Foundation Engineering[M]. Beijing: China Railway Publishing House, 2005.
[7] M. J. N. Priestley, R. Park. Strength and Ductility of Concrete Bridge Columns under Seismic Ioading[J]. Earthquake Engineering and Structural Dynamics, 2003(13):1995-2012.
[8] 孙治国, 郭讯, 王东升, 等. 钢筋混凝土空心墩延性变形能力分析[J]. 铁道学报, 2012(1):91-96.
Sun Zhiguo, Guo Xun, Wang Dongsheng, etc. Analysis on Ductile Deformability of Hollow Reinforced Concrete Bridge Piers[J]. Journal of the China Railway Society, 2012(1):91-96.
[9] Shome N, Cornell C A. Probabilistic Seismic Demand Analysis of Nonlinear Structure[R]. Report No. RMS-35, RMS Program. Stanford University, Stanford, CA, 1999.
[10]吕红山, 赵凤新. 适用于中国场地分类的地震动反应谱放大系数[J]. 地震学报, 2007(1):67-76.
Lu Hongshan, Zhao Fengxin. Site Coefficients Suitable to China Site Category [J]. Acta Seismologica Sinica, 2007(1):67-76.
[11]陆新征,叶列平,缪志伟.建筑弹塑性分析[M]. 北京:中国建筑工业出版社, 2009.
Lu Xinzheng, Ye Lieping, Liao Zhiwei. Elastic-plastic Analysis of Building[M]. Beijing: China Architecture & Building Press, 2009. |
|
|
|
2014, Vol. 31 
