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Monitoring railway traffic loads using bridge weight-in-motion
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Design and Bridges (name changed 20110630).
2007 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH , 2007. , xiii, 33 p.
Series
Trita-BKN. Bulletin, ISSN 1103-4270 ; 90
National Category
Reliability and Maintenance
Identifiers
URN: urn:nbn:se:kth:diva-4317OAI: oai:DiVA.org:kth-4317DiVA: diva2:11771
Presentation
2007-03-08, Seminarierummet, KTH, Brinellvägen 34, Stockholm, 13:00
Supervisors
Note
QC 20101111Available from: 2007-03-26 Created: 2007-03-26 Last updated: 2012-02-21Bibliographically approved
List of papers
1. Monitoring traffic loads and dynamic effects using an instrumented railway bridge
Open this publication in new window or tab >>Monitoring traffic loads and dynamic effects using an instrumented railway bridge
2005 (English)In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 27, no 12, 1813-1819 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents a cost-effective method for the assessment of actual traffic loads on an instrumented bridge. The instrumentation of a newly constructed integral-type railway bridge in Stockholm (Sweden) is described. A complete “Bridge Weigh-in-Motion” (B-WIM) system, with axle detection and accurate axle-load evaluation, was implemented using only four concrete embedded strain transducers. A temporary accelerometer was attached to the edge beam of the bridge to evaluate the eigenfrequencies, predict possible wheel/rail defects, and check whether the acceleration limit value for ballast instability (as given in railway bridge design codes) is exceeded. The main objective of the monitoring project has been to increase the knowledge of actual traffic loads and their effect on railway bridges, through both measurements and numerical simulations. Some very early but representative results are presented, and the efficiency of the algorithms and usefulness of the monitoring program highlighted.

Place, publisher, year, edition, pages
Elsevier, 2005
Keyword
Bridge, Railway, Traffic loads, Weigh-in-motion, Monitoring, Dynamics
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-11187 (URN)10.1016/j.engstruct.2005.04.022 (DOI)000231892600011 ()2-s2.0-23844511791 (Scopus ID)
Note
QC 20100818Available from: 2009-10-02 Created: 2009-10-02 Last updated: 2010-12-06Bibliographically approved
2. Implementing bridge weigh-in-motion for railway traffic
Open this publication in new window or tab >>Implementing bridge weigh-in-motion for railway traffic
2007 (English)In: Computers & structures, ISSN 0045-7949, E-ISSN 1879-2243, Vol. 85, no 02-jan, 80-88 p.Article in journal (Refereed) Published
Abstract [en]

This paper focuses on implementing existing bridge weigh-in-motion technology on railways. Using only simple instrumentation with four concrete embedded sensors, a complete WIM system with axle detection, weighing, track detection and attempted identification of locomotives was implemented on a bridge with multiple railway tracks. The results and the effectiveness of this type of sensor setup is discussed.

Keyword
bridge, railway, train, weigh-in-motion, WIM, influence line, calibration, speed measurement
National Category
Reliability and Maintenance
Identifiers
urn:nbn:se:kth:diva-16388 (URN)10.1016/j.compstruc.2006.08.056 (DOI)000244235500007 ()2-s2.0-33846206865 (Scopus ID)
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved
3. Twim, A MATLAB toolbox for real-time evaluation and monitoring of traffic loads on railway bridges
Open this publication in new window or tab >>Twim, A MATLAB toolbox for real-time evaluation and monitoring of traffic loads on railway bridges
2009 (English)In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980, Vol. 5, no 5, 407-417 p.Article in journal (Refereed) Published
Abstract [en]

This paper describes Twim, a toolbox written in the MATLAB computer language. Twim is designed for monitoring bridge behaviour during train passages as well as for performing Bridge Weigh-In-Motion of railway traffic, both in real-time and offline. The algorithms calculate the static bogie loads and bogie distances, as well as the speed and acceleration of the train. Twim also includes visualization functions, automatic identification of known locomotives and an auto-calibration that uses locomotives with known bogie loads. The algorithms used place specific requirements on both the bridge type and the instrumentation of the bridge. These requirements are explained in the paper. The instrumentation of several bridges is described, and some of the interesting results gained through this instrumentation are presented.

Keyword
Acceleration, B-WIM, Bridges, Dynamics, Monitoring, Railways, Traffic loads, Weigh-in-motion, Auto calibration, Automatic identification, Bridge-type, Computer language, Matlab toolboxes, Offline, Railway bridges, Railway traffic, Train passages, Visualization functions, Weigh in motion, Automation, Bogies (railroad rolling stock), Electronic data interchange, Engines, Instruments, Locomotives, MATLAB, Railroads
National Category
Reliability and Maintenance
Identifiers
urn:nbn:se:kth:diva-26069 (URN)10.1080/15732470701478370 (DOI)000268656700006 ()2-s2.0-70449674541 (Scopus ID)
Note
QC 20101111Available from: 2010-11-11 Created: 2010-11-11 Last updated: 2017-12-12Bibliographically approved

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