Identification of moving interaction forces with incomplete velocity information.

A new method to identify moving loads on a beam using measured vibration responses is studied for its possible application to identify axle loads when applied to the real bridge/vehicle interaction problem with road surface roughness and incomplete vehicle speed. Results from numerical studies on both a single and multi-span bridges and from laboratory experiment show that the method can identify individual axle loads travelling at non-uniform speed with small error. It can even identify the weight of the vehicle accurately when the vehicle brakes on top of the bridge deck.

[1]  P. K. Chatterjee,et al.  Vibration of Continuous Bridges Under Moving Vehicles , 1994 .

[2]  S. S. Law,et al.  Moving loads identification through regularization , 2002 .

[3]  Gouri Dhatt,et al.  An Efficient Algorithm for Dynamic Analysis of Bridges Under Moving Vehicles Using a Coupled Modal and Physical Components Approach , 1998 .

[4]  Keeyoung Choi,et al.  Identification of Impact Force and Location Using Distributed Sensors , 1996 .

[5]  Nathan M. Newmark,et al.  A Method of Computation for Structural Dynamics , 1959 .

[6]  Xinqun Zhu,et al.  MOVING FORCES IDENTIFICATION ON A MULTI-SPAN CONTINUOUS BRIDGE , 1999 .

[7]  David Cebon,et al.  Dynamic interaction between heavy vehicles and highway bridges , 1997 .

[8]  Xinqun Zhu,et al.  IDENTIFICATION OF VEHICLE AXLE LOADS FROM BRIDGE DYNAMIC RESPONSES , 2000 .

[9]  M. Yener,et al.  The influence of roadway surface irregularities and vehicle deceleration on bridge dynamics using the method of lines , 1995 .

[10]  Siu-Seong Law,et al.  Moving force identification using an existing prestressed concrete bridge , 2000 .

[11]  H. R. Busby,et al.  Optimal regularization of an inverse dynamics problem , 1997 .

[12]  G. A. Fonder,et al.  AN ITERATIVE SOLUTION METHOD FOR DYNAMIC RESPONSE OF BRIDGE–VEHICLES SYSTEMS , 1996 .

[13]  R W Traill-nash,et al.  VEHICLE BRAKING ON HIGHWAY BRIDGES , 1980 .

[14]  Ton-Lo Wang,et al.  DYNAMIC RESPONSE OF MULTIGIRDER BRIDGES , 1992 .

[15]  T. Hayashikawa,et al.  Closure of "Dynamic Behavior of Continuous Beams with Moving Loads" , 1981 .

[16]  N. Lex Mulcahy,et al.  Bridge response with tractor‐trailer vehicle loading , 1983 .

[17]  Tommy H.T. Chan,et al.  Moving force identification: A time domain method , 1997 .

[18]  Yeong-Bin Yang,et al.  Vehicle-Bridge Interaction Element for Dynamic Analysis , 1997 .

[19]  S. S. Law,et al.  Regularization in moving force identification , 2001 .

[20]  Yeong-Bin Yang,et al.  VEHICLE-BRIDGE INTERACTION ANALYSIS BY DYNAMIC CONDENSATION METHOD. DISCUSSION AND CLOSURE , 1995 .

[21]  Tommy H.T. Chan,et al.  Moving force identification - A frequency and time domains analysis , 1999 .