scholarly journals Optimal Sensor Placement of a Box Girder Bridge Using Mode Shapes Obtained from Numerical Analysis and Field Testing

Revista EIA ◽  
2020 ◽  
Vol 17 (34) ◽  
pp. 1-12
Author(s):  
Álvaro Viviescas ◽  
Gustavo Chio Cho ◽  
Oscar Begambre ◽  
Wilson Hernandez ◽  
Carlos Alberto Riveros-Jerez
Keyword(s):  
Information Matrix ◽  
Sensor Placement ◽  
Field Testing ◽  
Optimal Number ◽  
Mode Shapes ◽  
Optimal Sensor Placement ◽  
Box Girder ◽  
Weight Effect ◽  
Box Girder Bridge ◽  
Girder Bridge

This paper presents a comparative study of an Optimal Sensor Placement (OSP) implementation conducted in a box girder bridge using experimental and numerical mode shapes obtained at different construction stages. It is widely recognized that monitoring the dynamic response of bridges during different construction stages provides valuable information to adjust design considerations. Therefore, there is a need for the development of OSP implementations in order to find the optimal number of sensors needed for real applications. In the present study, an OPS method based on the maximization of the Fisher Information Matrix (FIM) is used. The use of experimentally derived and numerical based mode shapes is considered in the determination of the optimal sensor locations. Field testing results previously conducted before connecting the central segment of the main span are also included in this study. The asphalt pavement weight effect in OSP determination is also analyzed by considering field testing.

Rehabilitation of the Boivre Viaduct - A Multispan Prestressed Box Girder Bridge

PCI Journal ◽  
1986 ◽  
Vol 31 (3) ◽  
pp. 22-47 ◽  
Author(s):  
Charles C. Zollman ◽  
Serge H. Barbaux
Keyword(s):  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

scholarly journals The Analysis of Thermal Effect on Concrete Box Girder Bridge

2015 ◽  
Vol 111 ◽  
pp. 470-477 ◽  
Author(s):  
Lukáš Krkoška ◽  
Martin Moravčík
Keyword(s):  
Thermal Effect ◽  
Box Girder ◽  
Concrete Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

Structural Response of Skew RC Box Girder Bridge

1982 ◽  
Vol 108 (1) ◽  
pp. 89-104
Author(s):  
Alexander C. Scordelis ◽  
S. Tanvir Wasti ◽  
Frieder Seible
Keyword(s):  
Structural Response ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

Vehicle Weight Estimation Using Wireless Accelerometers on a Steel-Box Girder Bridge

2019 ◽  
Author(s):  
Tomonori Nagayama ◽  
So Kato ◽  
Haoqi Wang ◽  
Di Su ◽  
Mayuko Nishio
Keyword(s):  
Weight Estimation ◽  
Box Girder ◽  
Vehicle Weight ◽  
Efficient Management ◽  
Weigh In Motion ◽  
Speed Fluctuation ◽  
Drive Speed ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

<p>While the traffic loads need to be understood toward efficient management of bridges, the loads on each bridge are not well assessed. An easy‐to‐implement vehicle weight estimation technique toward Bridge Weigh‐In‐Motion (BWIM) is developed based on wireless accelerometers; the algorithm is studied for the application to ordinary road bridges where traffic speed is not necessarily high and drive speed fluctuation is not insignificant. The method uses only accelerometers installed on the girders, decreasing installation cost and time which typical BWIM systems based on strain measurement need. A measurement system consisting of battery operated wireless sensors is employed. The system can continue to work over weeks to assess the vehicle weigh distributions of days of a week. The system is installed on a continuous box‐girder bridge and the performance is examined. The system was shown to assess the weight of all heavy vehicles.</p>

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