Influence of Excitation on Dynamic System Identification for a Multi-Span Reinforced Concrete Bridge

In vibration-based damage detection, changes to structural modal properties are tracked over time in order to infer the current state of damage or deterioration. As such, the ability to obtain reliable estimates of modal parameters, particularly natural frequencies and mode shapes, is of critical importance. In the present study, the influence of the dynamic excitation source on the accuracy and statistical uncertainty of modal property estimates for a three span reinforced concrete bridge was investigated experimentally and numerically. Comparisons were made between the dynamic responses due to vehicle loading, harmonic and random forcing, impact, and environmental excitation. It was demonstrated that natural frequencies and mode shapes extracted from the free vibration response following vehicle and random loading events were of higher quality than corresponding values determined during the forcing phase of those events. Harmonic excitation at resonant frequencies and impact were also found to produce statistically reliable results.

[1]  B. Peeters,et al.  Vibration-based damage detection in civil engineering: excitation sources and temperature effects , 2001 .

[2]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[3]  Anil K. Chopra,et al.  Dynamics of Structures: Theory and Applications to Earthquake Engineering , 1995 .

[4]  Arun Kumar Pandey,et al.  Damage detection from changes in curvature mode shapes , 1991 .

[5]  J. L. Humar,et al.  Dynamic response of bridges under travelling loads , 1993 .

[6]  B. Peeters,et al.  Stochastic System Identification for Operational Modal Analysis: A Review , 2001 .

[7]  John Anthony Cafeo,et al.  Tutorial. Signal processing aspects of structural impact testing , 1992 .

[8]  Norris Stubbs,et al.  Model-Uncertainty Impact and Damage-Detection Accuracy in Plate Girder , 1995 .

[9]  Reto Cantieni,et al.  Analysis of dynamic wheel load signals in the frequency domain , 1999 .

[10]  Robert D. Adams,et al.  The location of defects in structures from measurements of natural frequencies , 1979 .

[11]  Charles R. Farrar,et al.  A summary review of vibration-based damage identification methods , 1998 .

[12]  C. E. Ventura,et al.  Determination of the dynamic characteristics of the Colquitz River Bridge by full-scale testing , 1996 .

[13]  Hoon Sohn,et al.  A review of structural health monitoring literature 1996-2001 , 2002 .

[14]  Charles R. Farrar,et al.  Excitation Methods for Bridge Structures , 1999 .

[15]  Kristopher Jackson.  Reliability-based load management of the Red Deer River bridge , 2007 .

[16]  Bruce F. Sparling,et al.  Assessment of vibration-based damage detection for an integral abutment bridge , 2007 .

[17]  Norris Stubbs,et al.  Nondestructive Crack Detection Algorithm for Full-Scale Bridges , 2003 .

[18]  O. S. Salawu,et al.  Damage Location Using Vibration Mode Shapes , 1994 .

[19]  D. Zimmerman,et al.  Structural damage detection using a minimum rank update theory , 1994 .

[20]  Patrick Paultre,et al.  Dynamic Testing Procedures for Highway Bridges Using Traffic Loads , 1995 .

[21]  Omar Chaallal,et al.  Bridge dynamics and dynamic amplification factors — a review of analytical and experimental findings , 1992 .

[22]  J. R. Billing,et al.  Dynamic loading and testing of bridges in Ontario , 1984 .

[23]  David J. Ewins,et al.  Modal Testing: Theory, Practice, And Application , 2000 .

[24]  L. Hermans,et al.  MODAL TESTING AND ANALYSIS OF STRUCTURES UNDER OPERATIONAL CONDITIONS: INDUSTRIAL APPLICATIONS , 1999 .

[25]  Prabhat Hajela,et al.  Recent developments in damage detection based on system identification methods , 1990 .

[26]  Ton-Lo Wang,et al.  Dynamic response of highway girder bridges , 1996 .

[27]  Charles R. Farrar,et al.  Structural Health Monitoring Studies of the Alamosa Canyon and I-40 Bridges , 2000 .

[28]  Y. K. Cheung,et al.  Identification of vehicles moving on continuous bridges with rough surface , 2004 .

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

[30]  Maria Q. Feng,et al.  Modeling of Traffic Excitation for System Identification of Bridge Structures , 2006, Comput. Aided Civ. Infrastructure Eng..

[31]  Angel C. Aparicio,et al.  Structural Damage Identification from Dynamic‐Test Data , 1994 .

[32]  Aleksandar Pavic,et al.  INSTRUMENTED SLEDGE HAMMER IMPACT EXCITATION: WORKED EXAMPLES , 1997 .

[33]  David Cebon,et al.  Dynamic Response of Highway Bridges to Heavy Vehicle Loads: Theory and Experimental Validation , 1994 .

[34]  Piotr Omenzetter,et al.  Assessment of highway bridge upgrading by dynamic testing and finite element model updating , 2003 .

[35]  Lawrence A. Bergman,et al.  A novel approach to the calculation of pothole-induced contact forces in MDOF vehicle models , 2004 .

[36]  Colin H. J. Fox,et al.  The location of defects in structures - A comparison of the use of natural frequency and mode shape data , 1992 .

[37]  Tommy H.T. Chan,et al.  Vehicle Model for Highway Bridge Impact , 1990 .

[38]  Jing Li,et al.  Dynamic Vehicle Element Method for Transient Response of Coupled Vehicle-Structure Systems , 2002 .

[39]  O. S. Salawu.  Detection of structural damage through changes in frequency: a review , 1997 .

[40]  Charles R. Farrar,et al.  Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review , 1996 .

[41]  A. K. Pandey,et al.  Damage Detection in Structures Using Changes in Flexibility , 1994 .

[42]  Y. G. Tsuei,et al.  Complex Mode Indication Function and its Applications to Spatial Domain Parameter Estimation , 1988 .