近断层地震作用下曲线桥碰撞效应及影响试验研究

李娜娜,许维炳,陈彦江,闫维明

振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 40-47.

PDF(1945 KB)
PDF(1945 KB)
振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 40-47.
论文

近断层地震作用下曲线桥碰撞效应及影响试验研究

  • 李娜娜,许维炳,陈彦江,闫维明
作者信息 +

An experimental study on pounding effect and influence of curved bridges subjected to near-fault ground motions

  • LI Nana,XU Weibing,CHEN Yanjiang,YAN Wenming
Author information +
文章历史 +

摘要

为明晰近断层地震动作用下曲线梁桥碰撞效应及其影响,以某小半径带坡匝道桥为对象,设计制作1/10缩尺模型及可调式碰撞测试装置,选取同次地震中近断层和远场地震动输入,完成了单向和双向激励条件下试验模型桥的振动台试验。结果表明:与远场地震动相比,近断层地震动作用下曲线梁桥的碰撞效应(碰撞次数和碰撞力)有较为显著的增加,而碰撞效应的增大会增大支座的位移响应,进而增加支座失效或落梁风险,且双向地震动影响更大;碰撞对边墩和中墩沿碰撞力方向的切向位移峰值增加显著,对碰撞力方向上试验模型桥的墩顶有效均方根位移响应均有放大作用,碰撞会增加试验模型桥桥墩的破坏风险。曲线桥抗震设计中应考虑近断层地震动诱发的碰撞效应影响。

Abstract

In order to clarify the ponding effect and its influence of curved girder bridge under near-fault ground motions, a 1/10 scale model and an adjustable pounding test device were designed and manufactured for a small radius ramp bridge. Shaking table tests under unidirectional and bidirectional excitations were completed by selecting near-fault and far-field ground motions in the same earthquake. The results showed that the pounding effect (pounding number and pounding force) of curved girder bridge under near-fault ground motion is significantly greater than that under far-field ground motion, and the increase of pounding effect will increase the displacement response of the support, which increasing the risk of bearing failure or beam falling, and the influence of bidirectional ground motion is greater; pounding effect significantly increases the tangential displacement peak value of side pier and middle pier along the direction of pounding force, enlarges the effective root mean square displacement response of the test pier, and increases the damage risk of test model bridge piers in the direction of pounding force. Pounding effect induced by near-fault ground motion should be considered in seismic design of curved bridges.

关键词

近断层地震动 / 曲线桥 / 振动台试验 / 碰撞效应

Key words

near-fault ground motion / curved bridge / shaking table test / pounding effect

引用本文

导出引用
李娜娜,许维炳,陈彦江,闫维明. 近断层地震作用下曲线桥碰撞效应及影响试验研究[J]. 振动与冲击, 2020, 39(12): 40-47
LI Nana,XU Weibing,CHEN Yanjiang,YAN Wenming. An experimental study on pounding effect and influence of curved bridges subjected to near-fault ground motions[J]. Journal of Vibration and Shock, 2020, 39(12): 40-47

参考文献

[1] 范立础. 梁桥非线性地震反应分析-老滦河桥的震害分析[J]. 土木工程学报, 1981, 14(2): 41-51.
FAN Lichu. Nonlinear earthquake response analysis of beam bridge-seismic damage analysis of the old Luan-river bridge[J]. Journal of Vibration and Shock, 1981, 14(2): 41-51.
[2] JENNINGS P C. Engineering features of the San Fernando earthquake of February 9, 1971:EERL-71-02[R]. Pasadena: Earthquake Engineering Research Laboratory, California Institute of Technology, 1971.
[3] ASTANEH A, BERTEROVV, BOLTBA, et al. Preliminary report on the seismological and engineering aspects of the October 17, 1989 Santa Cruz(Loma Prieta) earthquake: UCB/EERC-89/14[R]. California: Earthquake Engineering Research Center, University of California, 1989.
[4] Earthquake Engineering Research Institute (EERI). Northridge earthquake of January 17, 1994-Reconnaissance Report, Vol 1:95-03[R]. California: [s. n.], 1995.
[5] Earthquake Engineering Research Institute (EERI). The Hyogo-Ken Nanbu Earthquake of January 17, 1995-preliminary reconnaissance report [R]. Report, No.95-04, Oakland, CA, 1995.
[6] 刘启方, 袁一凡, 金星, 等. 近断层地震动的基本特征[J]. 地震工程与工程振动, 2006,26 (1): 1-10.
LIU Qifang, YUAN Yifan, JIN Xing, et al. Basic characteristics of near-fault ground motion[J]. Earthquake Engineering and Engineering Vibration, 2006, 26(1): 1-10.
[7] 石岩, 王东升, 孙治国. 近断层地震动下减隔震桥梁地震反应分析[J]. 桥梁建设, 2014, 44(3): 19-24.
SHI Yan, WANG Dongsheng, SUN Zhiguo. Analysis of seismic response of seismically mitigated and isolated bridge subjected to near-fault ground motion[J]. Bridge Construction, 2014, 44(3) : 19-24.
[8] 王东升,冯启民,翟桐. 近断层地震动作用下钢筋混凝土桥墩的抗震性能[J]. 地震工程与工程振动, 2003, 23(1): 95-102.
WANG Dongsheng, FENG Qimin, ZHAI Tong. Performance of reinforced concrete bridge piers subjected to near-fault ground motions[J]. Earthquake Engineering and Engineering Vibration, 2003, 23(1): 95-102.
[9] 周国良, 崔成臣, 刘必灯, 等. 汶川8.0级地震中几座近断层桥梁失效模式的初步探讨[J]. 震灾防御技术,2008, 3(4): 370-378.
Zhou Guoliang, Cui Chengchen, Liu Bideng, et al. Failure modes of near-fault bridges in wenchuan earthquake [J]. Technology for Earthquake Disaster Prevention, 2008, 3(4): 370-378. (in Chinese)
[10] 于淼, 刘必灯, 王伟. 近断层桥梁直接震害特征分析[J]. 防灾科技学院学报, 2016, 18(2): 41-53.
Yu Miao, Liu Bideng, Wang Wei. Damage characteristics of near-fault bridges [J]. Journal of Institute of Disaster Prevention, 2016, 18(2): 41-53. (in Chinese)
[11] 雷涛, 李碧雄, 曹鹏杰, 等. 汶川地震近断层附近桥梁震害浅析[J]. 重庆交通大学学报(自然科学版), 2010,29(3): 358-362.
Lei Tao, Li Bixiong, Cao Pengjie, et al. Analysis on damage of near-faultage bridges in wenchuan earthquake[J]. Journal of Chongqing Jiaotong University (natural science), 2010, 29(3): 358-362. (in Chinese)
[12] HAN Q, DU X, LIU J, et al. Seismic damage of highway bridges during the 2008 Wenchuan earthquake[J]. Earthquake Engineering and Engineering Vibration, 2009, 8(2): 263-273.
[13] Chen, J., et al. Effect of pounding on nonlinear seismic response of skewed highway bridges[J]. Soil Dynamics and Earthquake Engineering, 2017. 103: p. 151-165.
[14] 孙治国, 王东升, 郭迅, 孟庆利, 于德海, 李晓莉. 汶川大地震绵竹市回澜立交桥震害调查[J]. 地震工程与工程振动,2009,29(04):132-138.
SUN Zhiguo, et al. Damage investigation of Huilan interchange in Mianzhu after Wenchuan earthquake [J]. Journal of Earthquake Engineering and Engineering Vibration, 2009, 29 (04) : 132-138.
[15] 交通运输部公路科学研究院. 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.
[16] 左烨,孙广俊,王志鹏,李鸿晶.近断层地震动下曲线梁桥碰撞效应研究[J].振动与冲击,2018,37(21):52-60.
ZUO Ye,SUN Guangjun,WANG Zhipeng et al. Pounding effect of curved bridges subjected to near-fault seismic ground motions [J]. Journal of Vibration and Shock,2018,37(21):52-60.
[17] 王建强,赵云,赵卓,赵军.近断层地震动作用下隔震曲线桥地震反应分析[J].铁道工程学报,2018,35(07):47-51.
WANG Jianqiang,ZHAO Yun,ZHAO Zhuo et al. Seismic response of curved isolated bridge under near-fault ground motions[J]. Journal of Railway Engineering Society, 2018, 35(07): 47-51.
[18] 李勇,闫维明,刘晶波,解梦飞.近断层高架连续梁桥地震易损性与振动台试验研究[J].工程力学,2018,35(04):52-60+86.
LI Yong, YAN Wei-ming, LIU Jing-bo et al. Seismic vulnerability analysis and a shaking table test of a near-fault continuous viaduct [J]. Engineering Mechanics,2018,35(04):52-60+86.
[19] 张凡,李帅,颜晓伟,王景全.近断层脉冲型地震动作用下大跨斜拉桥地震响应分析[J].振动与冲击,2017,36(21):163-172+184.
ZHANG Fan,LI Shuai,YAN Xiaowei et al. Effects of near-fault pulse-type ground motions on the seismic responses of a long-span cable-stayed bridge [J]. Journal of Vibration and Shock, 2017,36(21):163-172+184.

PDF(1945 KB)

Accesses

Citation

Detail

段落导航
相关文章

/