Experimental Investigation on Acceptable Difference Value in Modal Parameters for Model Updating Using RC Building Models

Abstract The objective of this paper is to evaluate the acceptable differences limit between analytically and experimentally identified modal parameters and to assess its contribution to the success of finite element model updating. To achieve this aim, three one-story reinforced concrete buildings consisting of raft foundation, columns and beams were simultaneously constructed under laboratory conditions. Experimental measurements were taken for each building to determine the modal parameters using ambient vibration tests. All parameters, which could be expected to affect structural behavior, such as structural dimensions, concrete properties, reinforcement detailing, construction joints, concreting days, workmanship, temperature and humidity, were made the same, as far as possible, for each building to eliminate the influence of environmental effects on experimental measurements. At the end of the study, the differences in the experimentally identified natural frequencies were obtained between 3.14% and 11.83%, with all parameters the same for each building model. As a result of this paper, it is suggested that the maximum acceptable differences limit can be taken as 5%.

[1]  Alemdar Bayraktar,et al.  Operational modal analysis of a scaled bridge model using EFDD and SSI methods , 2012 .

[2]  Palle Andersen,et al.  Modal Identification from Ambient Responses using Frequency Domain Decomposition , 2000 .

[3]  Min Xu,et al.  Modal identification of bridges based on continuous dynamic monitoring , 2016 .

[4]  Bart Peeters,et al.  System identification and damage detection in civil engineering , 2000 .

[5]  Paul Reynolds,et al.  Modal testing and dynamic FE model correlation and updating of a prototype high-strength concrete floor , 2003 .

[6]  Hyung-Jo Jung,et al.  A new multi-objective approach to finite element model updating , 2014 .

[7]  Rune Brincker,et al.  Using Enhanced Frequency Domain Decomposition as a Robust Technique to Harmonic Excitation in Operational Modal Analysis , 2006 .

[8]  J. Bendat,et al.  Random Data: Analysis and Measurement Procedures , 1971 .

[9]  B. Moor,et al.  Subspace identification for linear systems , 1996 .

[10]  Andreas Johann Felber,et al.  Development of a hybrid bridge evaluation system , 1994 .

[11]  Alemdar Bayraktar,et al.  Output-Only System Identification of Posttensioned Segmental Concrete Highway Bridges , 2011 .

[12]  Eunjong Yu,et al.  Modal System Identification and Finite Element Model Updating of a 15-Story Building Using Earthquake and Ambient Vibration Data , 2007 .

[13]  Randall J. Allemang,et al.  THE MODAL ASSURANCE CRITERION–TWENTY YEARS OF USE AND ABUSE , 2003 .

[14]  Shuqing Wang,et al.  Structural model updating of an offshore platform using the cross model cross mode method: An experimental study , 2015 .

[15]  François M. Hemez,et al.  Model selection through robustness and fidelity criteria: Modeling the dynamics of the CX-100 wind turbine blade , 2014 .

[16]  Temel Türker,et al.  Seismic Response of a Historical Masonry Minaret using a Finite Element Model Updated with Operational Modal Testing , 2011 .

[17]  Sez Atamturktur,et al.  Fidelity and Robustness of Detailed Micromodeling, Simplified Micromodeling, and Macromodeling Techniques for a Masonry Dome , 2014 .

[18]  Bart De Moor,et al.  Subspace Identification for Linear Systems: Theory ― Implementation ― Applications , 2011 .

[19]  François M. Hemez,et al.  Uncertainty quantification in model verification and validation as applied to large scale historic masonry monuments , 2012 .

[20]  J. L. Zapico-Valle,et al.  A new method for finite element model updating in structural dynamics , 2010 .

[21]  Qiusheng Li,et al.  Finite element model updating for a high-rise structure based on ambient vibration measurements , 2004 .

[22]  D. J. Ewins,et al.  Modal Testing: Theory and Practice , 1984 .

[23]  B. Peeters,et al.  Reference based stochastic subspace identification in civil engineering , 1999 .

[24]  Piotr Omenzetter,et al.  Calibration of the finite element model of a twelve-span prestressed concrete bridge using ambient vibration data , 2014 .

[25]  Moon Kyum Kim,et al.  Finite element model updating of concrete-filled steel tubular arch bridge under operational condition using modal flexibility , 2007 .

[26]  Raimundo Delgado,et al.  Finite element model updating of a bowstring-arch railway bridge based on experimental modal parameters , 2012 .

[27]  Tong Zhao,et al.  Experimental and Analytical Modal Analysis of Steel Arch Bridge , 2004 .