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...

高墩隔震连续梁桥地震模拟振动台试验

Keywords: 桥梁工程,隔震连续梁桥,振动台试验,隔震性能,隔震支座

Full-Text   Cite this paper   Add to My Lib

Abstract:

?为了研究高墩隔震连续梁桥的抗震及减震性能,以某实际跨海高墩连续梁桥为试验研究对象,设计制作与原模型同材料1:10的试验模型,分别采用铅芯橡胶隔震支座、高阻尼橡胶隔震支座和摩擦摆隔震支座3种减震方式,进行高墩隔震连续梁桥的地震模拟振动台试验,设计了拼接式桥墩拼接处剪力测试方法,研究了该实际跨海大桥所在场地120年一遇、600年一遇、1200年和2400年一遇地震的地震波输入时,不同隔震方式对桥墩墩顶加速度、桥面加速度、桥墩墩顶剪力、桥墩拼接处剪力、墩底混凝土应变、墩底钢筋应变的影响.试验结果表明:只要隔震支座参数设计合理,3种减震方式均能有效减小桥梁的动力响应,隔震后在2400年一遇地震时整个桥墩处于弹性状态;摩擦摆隔震支座屈服前刚度最大,需根据地震波输入强度合理设计屈服力才能起到减震作用;设计的拼接式桥墩拼接处剪力测试方法可有效测试拼接处的剪力,为拼接处拼接件的设计提供了设计依据.

References

[1]  LIAO W I,LOH C H,LEE B H.Comparison of Dynamic Response of Isolated and Non-isolated Continuous Girder Bridges Subjected to Near-fault Ground Motions[J].Engineering Structures,2004,26(14):2173-2183.
[2]  WEI Z H,YUAN W C,CHEUNG P,et al.Seismic Performance of Continuous Girder Bridges Using Cable-sliding Friction Aseismic Bearing[J].Procedia Engineering,2011,14:914-921.
[3]  刘健新,胡兆同,李子青.桥梁结构减震设计方法研究[J].中国公路学报,2000,13(4):73-75,79. LIU Jian-xin,HU Zhao-tong,LI Zi-qing.Design Method for Seismic Absorption of Bridge Structures[J].China Journal of Highway and Transport,2000,13(4):73-75,79.
[4]  王丽,闫维明,阎贵平.铅芯橡胶支座参数对隔震桥梁动力响应的影响[J].北京工业大学学报,2004,30(3):304-308. WANG Li,YAN Wei-ming,YAN Gui-ping.Effect of the LRB Parameters on the Dynamic Response of Isolated Bridges[J].Journal of Beijing University of Technology,2004,30(3):304-308.
[5]  徐秀丽,于兰珍,王曙光,等.高墩连续梁桥减震设计研究[J].工程抗震与加固改造,2005,27(5):63-67. XU Xiu-li,YU Lan-zhen,WANG Shu-guang,et al.Study on Seismic Design for High-pier Continuous Girder Bridges[J].Earthquake Resistant Engineering and Retrofitting,2005,27(5):63-67.
[6]  龚一琼,胡 勃,袁万城,等.连续梁桥的减隔震设计[J].同济大学学报:自然科学版,2001,29(1):94-98.GONG Yi-qiong,HU Bo,YUAN Wan-cheng,et al.Seismic Isolation Design of Continuous Girder Bridges[J].Journal of Tongji University:Natural Science,2001,29(1):94-98.
[7]  田 力,李忠献.地下爆炸波冲击下隔震连续梁桥动力响应分析[J].天津大学学报,2005,38(7):602-610.TIAN Li,LI Zhong-xian.Dynamic Response Analysis of Based-isolated Continuous Girder Bridges Subjected to Underground Explosion Waves[J].Journal of Tianjin University,2005,38(7):602-610.
[8]  汤 虎,李建中.连续梁桥固定墩减震设计方法研究[J].土木工程学报,2011,44(12):64-72.TANG Hu,LI Jian-zhong.Study of Earthquake-reduction Design for the Fixed Pier of Continuous Bridges[J].China Civil Engineering Journal,2011,44(12):64-72.
[9]  刘彦辉,谭 平,周福霖,等.双室薄壁钢筋混凝土桥墩抗震性能试验研究[J].土木工程学报,2012,45(增1):90-95.LIU Yan-hui,TAN Ping,ZHOU Fu-lin,et al.Experimental Study of Seismic Performance for the Double-chambers Thin-wall Concrete Pier[J].China Civil Engineering Journal,2012,45(S1):90-95.
[10]  刘新华,李加武,周琴,等.简支梁桥铅芯橡胶支座减震特性研究[J].建筑科学与工程学报,2014,31(3):124-131. LIU Xin-hua,LI Jia-wu,ZHOU Qin,et al.Research on Seismic Isolation Characteristics of LRB for Simply Supported Beam Bridge[J].Journal of Architecture and Civil Engineering,2014,31(3):124-131.
[11]  刘健新,赵国辉."5·12"汶川地震典型桥梁震害分析[J].建筑科学与工程学报,2009,26(2):92-97. LIU Jian-xin,ZHAO Guo-hui.Typical Bridge Damage Analysis in "5·12"Wenchuan Earthquake[J].Journal of Architecture and Civil Engineering,2009,26(2):92-97.
[12]  杜修力,韩强,李忠献,等.5.12汶川地震中山区公路桥梁震害及启示[J].北京工业大学学报,2008,34(12):1270-1279. DU Xiu-li,HAN Qiang,LI Zhong-xian,et al.The Seismic Damage of Bridges in the 2008 Wenchuan Earthquake and Lessons from Its Damage[J].Journal of Beijing University of Technology,2008,34(12):1270-1279.
[13]  PENG Tian-bo,YU Xun-tao,WANG Zhen-nan,et al.Study of the Seismic Performance of Expansion Double Spherical Seismic Isolation Bearings for Continuous Girder Bridges[J].Earthquake Engineering and Engineering Vibration,2012,11(2):163-172.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133