[1] Wang Hao, Li Aiqun, Miao Changqing,. Finite element model updating and validatingof Runyang Suspension Bridge based on SHMS [J]. Journal of Southeast University (English Edition), 2005, 21 (4): 474-479. [doi:10.3969/j.issn.1003-7985.2005.04.020]

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Finite element model updating and validatingof Runyang Suspension Bridge based on SHMS()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

21

Issue:

2005 4

Page:

474-479

Research Field:

Traffic and Transportation Engineering

Publishing date:

2005-12-30

Info

Title:

Finite element model updating and validatingof Runyang Suspension Bridge based on SHMS

Author(s):

Wang Hao;  Li Aiqun;  Miao Changqing

College of Civil Engineering, Southeast University, Nanjing 210096, China

Keywords:

suspension bridge;  finite element;  model updating;  model validating;  baseline model;  structural health monitoring system(SHMS)

PACS:

U442;U448

DOI:

10.3969/j.issn.1003-7985.2005.04.020

Abstract:

Based on the finite element(FE)program ANSYS, a three-dimensional model for the Runyang Suspension Bridge(RSB)is established.The structural natural frequency, vibration mode, stress and displacement response under various load cases are given.A new method of FE model updating is presented based on the physical meaning of sensitivity and the penalty function concept.In this method, the structural model is updated by modifying the parameters of design, and validated by structural natural vibration characteristics, stress response as well as displacement response.The design parameters used for updating are bounded according to measured static response and engineering judgment.The FE model of RSB is updated and validated by the measurements coming from the structural health monitoring system(SHMS), and the FE baseline model reflecting the current state of RSB is achieved.Both the dynamic and static results show that the method is effective in updating the FE model of long span suspension bridges.The results obtained provide an important research basis for damage alarming and health monitoring of the RSB.

References:

[1] Li Aiqun, Miao Changqing, Li Zhaoxia, et al.Health monitoring system for the Runyang Yangtse River Bridge [J].Journal of Southeast University (Natural Science Edition), 2003, 33(5):544-548.(in Chinese)
[2] Mottershead J E, Friswell M I.Model updating in structural dynamics: a survey [J].Journal of Sound and Vibration, 1993, 167(2):347-375.
[3] Zhang Qiwei, Sun Limin.FE model updating of suspension bridge based on vibration measurements [A].In:Li Zhongxian, Ru Jiping, eds.Proc of the Seventh International Symposium on Structural Engineering for Young Experts[C].Beijing:Science Press, 2002.793-800.
[4] He Xuhui.Study on the structural health monitoring of Nanjing Yangtze River Bridge and its key technologies [D].Changsha:School of Civil Engineering and Architecture of Central South University, 2004.(in Chinese)
[5] Wu J R, Li Q S.Finite element model updating for a high-rise structure based on ambient vibration measurements [J].Engineering Structures, 2004, 26(7):979-990.
[6] Ernst J H.Der E-modul von seilen unter berucksichtigung des durchhanges [J].Der Bauingenieur, 1965, 40(2):52-55.
[7] Jaishi B, Ren W X.Structural finite element model updating using ambient vibration test results [J].Journal of Structural Engineering, 2005, 131(4):617-628.
[8] Wang Hao, Qiao Jiandong.Finite element analysis and experimental study on dynamic characteristics of bridge structures[J].Journal of Highway and Transportation Research and Development, 2004, 21(6):78-80.(in Chinese)
[9] Li Aiqun.Report on field measurement of Runyang Yangtse River Bridge [R].Nanjing:College of Civil Engineering, Southeast University, 2005.(in Chinese)
[10] Gia Lijun, Sun Bin, Liu Yu, et al.Analysis of preliminary design program of Hongkong Tsing Lung Bridge [J].Journal of Tongji University(Natural Science Edition), 2001, 29(1):89-93.(in Chinese)

Memo

Memo:

Biographies: Wang Hao(1980—), male, graduate;Li Aiqun(corresponding author), male, doctor, professor, aiqunli@public1.ptt.js.cn.

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