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...

考虑缆索约束的多塔悬索桥中塔顺桥向基频近似算法

, PP. 108-112

Keywords: 桥梁工程,多塔悬索桥,基频近似算法,Rayleigh法和Southwell合成法,桥塔

Full-Text   Cite this paper   Add to My Lib

Abstract:

将多塔悬索桥的中塔当作底部固定、顶部受到主缆弹性约束的结构,在Rayleigh能量法和Southwell's频率合成法的基础上,推导了受到主缆约束的桥塔结构振动基频近似计算表达式。以成桥后的泰州大桥中塔为例,测试了其环境激励下的自振基频,并对环境激励下桥塔的自振基频与其理论计算结果进行了对比分析。结果表明该基频表达式不仅可在设计阶段预估桥塔的振动特性,还可在桥梁运营期通过频率测试来识别塔顶的顺桥向抗推刚度。且计算基频与实测值的误差为4.46%~5.48%,在可接受范围。该算法不仅适用于各种复杂截面多塔悬索桥中塔,也适用于挂线的输电塔等工程结构。

References

[1]  杨进.多塔多跨悬索桥应用于海峡长桥建设的技术可 行性与技术优势[J].桥梁建设,2009 , 39 (2): 36一39. YANG Jin. Technical Feasibility and Adantages of Applying Multi-tower and Multi一span Suspension Bridge to Construction of Long Bridge across Straits[J].Bridge Construction, 2009,39 (2):36一39.
[2]  MURTAGH P J, BASU B,BRODERICK B M. Simple Models for Natural Frequencies and Mode Shapes of Towers Supporting Utilities [J].Computers and Structures,2004,82 (20/21):1745一1750.
[3]  李宏男,白海峰输电塔线体系的风(雨)致振动响 应与稳定性研究[J].土木工程学报,2008, 41 (11):31一38. LI Hong-nan, BAI Hai-feng. Dynamic Behavior and Stability of Transmission Tower-line System under Wind (Rain)Forces [J].China Civil Engineering Journal, 2008,41(11):31一38.
[4]  翟长海,武钢,李爽,等.大跨越输电塔一线体系的平面内塔一线耦合效应与TMD减震控制研究[J]振动 工程学报,2012, 25 (4):431一438. ZHAI Chang-hai,WU Gang, LI Shuang, et al. Tower- lines In-plane Coupling and TMD Seismic Control of Large Crossing Transmission Tower Lines System[J]. Journal of Vibration Engineering, 2012,25 (4):431一438.
[5]  李枝军,韩晓林,李爱群,等.悬索桥桥塔挂缆前后 动态特性分析与测试[J].中国公路学报,2007, 20 (5):54一58. LI Zhi-jun, HAN Xiao-lin, LI Ai-qun, et al. Dynamic Analysis and Test of Bridge Tower of Suspension Bridge Before and After Cable Installed[J].China Journal of Highway and Transport, 2007,20 (5):54一58.
[6]  FEI Q G, ZHOU H G, HAN X L, et al. Structural Health Monitoring Oriented Stability and Dynamic Analysis of a Long-span Transmission Tower-line System[J]. Engineering Failure Analysis,2012,20期?:80一87.
[7]  OZTURK H,SABUNCU M. Stability Analysis of a Cantilever Composite Beam on Elastic Supports[J]. Composites Soience and Technology, 2005,65(13): 1982一1995.
[8]  WU J S, CHEN C T. Forced Vibration Analysis of an Offshore Tower Carrying an Eccentric Tip Mass with Rotary Inertia Due to Support Excitation[J].Ocean Engineering, 2007,34(8/9):1235一1244.
[9]  LI X F, TANG A Y, XI L Y. Vibration of a Rayleigh Cantilever Beam with Axial Force and Tip Mass[J]. Journal of Constructional Steel Research, 2013,80: 15一22.
[10]  AUCIELLO N M,ERCOLANO A. A General Solution for Dynamic Response of Axially Loaded Non一uniform Timoshenko Beams[J].International Journal of Solids
[11]  王俊,孙航,刘伟庆,等.悬索桥裸塔振动基频快速 算法[J].公路交通科技,2011, 28 (11):90一94. WANC Jun, SUN Hang, LIU Wei一qling, et al. A Rapid Algorithm of Fundamental Frequency for Free-standing Pylon of Suspension Bridge[J].Journal of Highway and Transportation Research and Development, 2011,28 (11):90一94.
[12]  邹敏勇,郑修典,王忠彬,等.泰州长江公路大桥三 塔悬索桥中塔方案设计[J].世界桥梁,2008 (1): 5一7. ZOU Min-yong, ZHENG Xiu-dian, WANG Zhong-bin, et al. Conceptual Design of Intermediate Tower of Three Tower Suspension Bridge of Taizhou Changjiang River Highway Bridge[J] . World Bridges,2008(1):5一7. and Structures,2004,41(18/19):4861一4874.
[13]  MAZANOGLU K, SABUNCU M. Vibration Analysis of Non-uniform Beams Having Multiple Edge Cracks along the Beam's Height[J].International Journal of Mechanical Sciences,2010,52 (3):515一522.
[14]  柴生波,肖汝诚,张学义,等.多跨悬索桥中塔纵向刚 度研究[J].中国公路学报,2012, 25 (2) : 67 -71. CHAI Sheng-bo, XIAO Ru-cheng, ZHANG Xue-yi,et al. Study of Longitudinal Stiffness of Middle Pylon in Multi- span Suspension Bridge [J].China Journal of Highway and Transport, 2012,25 ( 2):67一71.
[15]  王俊,孙航,刘伟庆,等.悬索桥裸塔振动基频快速 算法[J].公路交通科技,2011, 28 (11):90一94. WANC Jun, SUN Hang, LIU Wei一qling, et al. A Rapid Algorithm of Fundamental Frequency for Free-standing Pylon of Suspension Bridge[J].Journal of Highway and Transportation Research and Development, 2011,28 (11):90一94.
[16]  邹敏勇,郑修典,王忠彬,等.泰州长江公路大桥三 塔悬索桥中塔方案设计[J].世界桥梁,2008 (1): 5一7. ZOU Min-yong, ZHENG Xiu-dian, WANG Zhong-bin, et al. Conceptual Design of Intermediate Tower of Three Tower Suspension Bridge of Taizhou Changjiang River Highway Bridge[J] . World Bridges,2008(1):5一7.
[17]  YOSHIDA O,OKUDA M,MORIYA T. Structural Characteristics and Applicability of Four-span Suspension Bridge[J].Journal of Bridge Engineering, 2004,9 (5):453一 463.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133