scholarly journals B-WIM SYSTEM USING FEWER SENSORS

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Yahya M. Mohammed ◽  
Nasim Uddin
Keyword(s):  
Response Accuracy ◽  
Quarter Car Model ◽  
Moving Force ◽  
Car Model ◽  
Traffic Loads ◽  
Modal Response ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion ◽  
Proper Orthogonal ◽  
Measured Response

Bridge Weigh-in-Motion (B-WIM) is the concept of using measured response on a bridge to calculate the static weights of passing traffic loads as they pass overhead at full highway speed. This paper describes an enhancement to the Moving Force Identification (MFI) algorithm by estimating the response of some DOFs using limited number of measurements in order to increase measurements number (Input). The pseudoinverse of the mode shape matrix has been utilized to approximately calculate the modal response using limited measured response. Then the calculated modal response has been used to estimate more DOFs that are different from the measured one. The proper orthogonal decomposition (POD) technique is employed to determine the governing modes that increase the modal response accuracy. Numerical example for quarter car model passing over simply supported bridge has been established to demonstrate the idea.

Dynamic Characteristics of a Multi-Functional Bridge Bearing with Built-In Piezocomposite Element

2013 ◽  
Vol 432 ◽  
pp. 275-280 ◽  
Author(s):  
Dong Ho Ha ◽  
Jinkyo F. Choo ◽  
Chang Hyung Lee ◽  
Won Seo Jang ◽  
Nam Seo Goo
Keyword(s):  
Output Voltage ◽  
Traffic Monitoring ◽  
Real Time Traffic ◽  
Traffic Loads ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion ◽  
Loading Tests ◽  
Self Powered ◽  
Bridge Bearing ◽  
Bridge Bearings

A multi-functional bridge bearing with built-in piezocomposite electricity generating element (PCGE) is being developed by our research team to respond to the growing demand of self-powered sensing devices for the monitoring of bridges by harvesting the energy produced by the traffic-induced vibrations. For the intended application, a multilayered piezoelectric PCGE structure composed of layers of piezoceramic, glass/epoxy, and carbon/epoxy, has been developed to improve the durability, output voltage and power of the piezoceramic. The output voltage of this PCGE can be used for real-time traffic monitoring like in bridge-weigh-in-motion systems and can eventually be exploited to generate the electricity needed for the lighting and functioning of other embedded sensors. This paper presents the results of the dynamic loading tests conducted on a prototype of the proposed multi-functional bridge bearing to enhance its design details and verify the accuracy of the measurement. The results show that the bearing provides reliable measurement for traffic monitoring and enable to conceive details for the improvement of the output voltage of the PCGE. Since bridge bearings, as indispensable devices transferring the loads and movements from the deck to the substructure and foundations of the bridge, are continuously subjected to traffic loads, the proposed bridge bearing appears to be a natural and economic solution that can be applied to existing or newly built bridges without modification of the conventional design while providing additional and valuable functions for the maintenance of the structure.

scholarly journals Development and Testing of a Railway Bridge Weigh-in-Motion System

2020 ◽  
Vol 10 (14) ◽  
pp. 4708 ◽  
Author(s):  
Donya Hajializadeh ◽  
Aleš Žnidarič ◽  
Jan Kalin ◽  
Eugene John OBrien
Keyword(s):  
Constant Velocity ◽  
Regression Models ◽  
Variable Velocity ◽  
Railway Bridge ◽  
Motion System ◽  
Weigh In Motion ◽  
Calibration Methods ◽  
Bridge Weigh In Motion ◽  
Bridge Wim ◽  
Measured Response

This study describes the development and testing of a railway bridge weigh-in-motion (RB-WIM) system. The traditional bridge WIM (B-WIM) system developed for road bridges was extended here to calculate the weights of railway carriages. The system was tested using the measured response from a test bridge in Poland, and the accuracy of the system was assessed using statically-weighed trains. To accommodate variable velocity of the trains, the standard B-WIM algorithm, which assumes a constant velocity during the passage of a vehicle, was adjusted and the algorithm revised accordingly. The results showed that the vast majority of the calculated carriage weights fell within ±5% of their true, statically-weighed values. The sensitivity of the method to the calibration methods was then assessed using regression models, trained by different combinations of calibration trains.

scholarly journals Experimental Testing of a Moving Force Identification Bridge Weigh-in-Motion Algorithm

2008 ◽  
Vol 49 (5) ◽  
pp. 743-746 ◽  
Author(s):  
C. W. Rowley ◽  
E. J. OBrien ◽  
A. Gonzalez ◽  
A. Žnidarič
Keyword(s):  
Experimental Testing ◽  
Force Identification ◽  
Moving Force ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion

Moving force identification for real-time bridge weigh-in-motion

2019 ◽  
Vol 14 (4) ◽  
pp. 139-145 ◽  
Author(s):  
Yahya M. Mohammed ◽  
Nasim Uddin ◽  
Eugene J. Obrien
Keyword(s):  
Real Time ◽  
Force Identification ◽  
Moving Force ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion

Real condition experiment on a new bridge weigh-in-motion solution for the traffic assessment on road bridges

2021 ◽  
Author(s):  
François-Baptiste Cartiaux ◽  
Véronique Le Corvec ◽  
Jorge Semiao ◽  
Bernard Jacob ◽  
Franziska Schmidt ◽  
...  
Keyword(s):  
Prestressed Concrete ◽  
Large Scale ◽  
Bridge Deck ◽  
Bridge Management ◽  
Box Girders ◽  
Long Span ◽  
Traffic Loads ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion ◽  
Precast Prestressed Concrete

<p>Weigh-in-Motion is currently the only way to precisely assess and monitor traffic loads on road bridges from real measurements. This assessment helps to detect potential overweight vehicles and to optimize the maintenance operations on the bridge thanks to an accurate knowledge of its real load conditions.</p><p>An experiment, performed on a precast prestressed concrete beam girders bridge overcrossing a highway in France, is described. The Weigh-in-Motion (WIM) system uses the bridge deck as a large scale, part of the weighing device, and measures strain in critical parts of the structure.</p><p>The system is able to get significantly accurate estimations of the gross weight of the vehicles on most types of bridges, including long span box girders, large composite decks or the multiple precast prestressed concrete beams considered in the study. However, the axle load estimation is still much less accurate and not presented here.</p><p>The experiment started in February 2019 and is still going on, also proving the robustness of the solution for an operation over long durations, as a permanent part of the bridge management through its whole lifecycle. Thus, the WIM sensors used are relevant for the Structural Health Monitoring of the bridge deck as well.</p>

scholarly journals Bridge weigh-in-motion using a moving force identification algorithm

2017 ◽  
Vol 199 ◽  
pp. 2955-2960 ◽  
Author(s):  
Paul C. Fitzgerald ◽  
Enrique Sevillano ◽  
Eugene J. OBrien ◽  
Abdollah Malekjafarian
Keyword(s):  
Identification Algorithm ◽  
Force Identification ◽  
Moving Force ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion

Magnetorheological damper in semi-active vehicle suspension system using SDRE control for a quarter car model

2018 ◽  
Author(s):  
Maria Aline Gonçalves ◽  
Rodrigo Tumolin Rocha ◽  
Frederic Conrad Janzen ◽  
José Manoel Balthazar ◽  
Angelo Marcelo Tusset
Keyword(s):  
Suspension System ◽  
Magnetorheological Damper ◽  
Vehicle Suspension ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car ◽  
Vehicle Suspension System ◽  
Active Vehicle Suspension System

An insight into linear quarter car model accuracy

2010 ◽  
Vol 49 (3) ◽  
pp. 463-480 ◽  
Author(s):  
Damien Maher ◽  
Paul Young
Keyword(s):  
Model Accuracy ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car ◽  
Insight Into

scholarly journals Comparative Accuracy Analysis of Truck Weight Measurement Techniques

2021 ◽  
Vol 11 (2) ◽  
pp. 745
Author(s):  
Sylwia Stawska ◽  
Jacek Chmielewski ◽  
Magdalena Bacharz ◽  
Kamil Bacharz ◽  
Andrzej Nowak
Keyword(s):  
Measurement Techniques ◽  
Highway Traffic ◽  
Highway Infrastructure ◽  
Measurement Systems ◽  
Motion System ◽  
Weigh In Motion ◽  
Comparative Accuracy ◽  
Bridge Weigh In Motion ◽  
Rational Management ◽  
Truck Weight

Roads and bridges are designed to meet the transportation demands for traffic volume and loading. Knowledge of the actual traffic is needed for a rational management of highway infrastructure. There are various procedures and equipment for measuring truck weight, including static and in weigh-in-motion techniques. This paper aims to compare four systems: portable scale, stationary truck weigh station, pavement weigh-in-motion system (WIM), and bridge weigh-in-motion system (B-WIM). The first two are reliable, but they have limitations as they can measure only a small fraction of the highway traffic. Weigh-in-motion (WIM) measurements allow for a continuous recording of vehicles. The presented study database was obtained at a location that allowed for recording the same traffic using all four measurement systems. For individual vehicles captured on a portable scale, the results were directly compared with the three other systems’ measurements. The conclusion is that all four systems produce the results that are within the required and expected accuracy. The recommendation for an application depends on other constraints such as continuous measurement, installation and operation costs, and traffic obstruction.

Study on bridge weigh in motion (BWIM) system for measuring the vehicle parameters based on strain measurement using FBG sensors

2021 ◽  
Vol 61 ◽  
pp. 102440
Author(s):  
Sravanthi Alamandala ◽  
R.L.N. Sai Prasad ◽  
Rathish Kumar Pancharathi ◽  
V.D.R. Pavan ◽  
P. Kishore
Keyword(s):  
Strain Measurement ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion ◽  
Fbg Sensors
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