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Title:Uporaba sistemov za tehtanje vozil med vožnjo za določitev realne konstrukcijske varnosti mostov
Authors:ID Žnidarič, Aleš (Author)
ID Kreslin, Maja (Author)
ID Kalin, Jan (Author)
ID Anžlin, Andrej (Author)
Files:URL URL - Source URL, visit https://www.zveza-dgits.si/wp-content/uploads/2019/12/12-2019-msn9.pdf
 
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Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:Optimalno upravljanje mostov, ki vključuje stroške vzdrževanja, potencialna tveganja in vzdrževanje funkcionalnosti, zahteva natančne informacije o stanju konstrukcij. Eden od ključnih kazalnikov obnašanja je konstrukcijska varnost mostu, ki zahteva poglobljeno poznavanje prometnih obremenitev in njegove odpornosti proti obremenitvam. Vrednotenje varnosti je predvsem ključno za stare mostove, ki so poškodovani in se bližajo koncu življenjskega cikla. Varnost takšnih mostov z uporabo tradicionalnih računskih metod pogosto težko dokažemo. Da bi se izognili nepotrebnim ukrepom, kot je ojačitev ali celo zamenjava mostu, je priporočljivo narediti celovito analizo, ki vključuje preiskave materialov in meritve obnašanja mostu pod prometno obtežbo. Prispevek predstavlja tehnologijo tehtanja vozil med vožnjo v prostem prometnem toku na mostovih (angl. bridge weigh-in-motion oz. B-WIM), ki lahko učinkovito izmeri parametre obnašanja mostu, ki so ključni za določitev njihove realne varnosti: osne obremenitve in medosne razdalje vozil ter vplivnice, faktorje porazdelitve obtežbe in dinamični odziv konstrukcije. Poznavanje pravih vrednosti teh parametrov zmanjšuje negotovosti, povezane z obremenitvami in odzivom konstrukcije. Poleg tega lahko zaradi večje zanesljivosti izmerjenih parametrov v analizah zmanjšamo varnostne faktorje. To omogoča bolj optimalno vzdrževanje in uporabo infrastrukture ter racionalnejšo uporabo razpoložljivih finančnih sredstev.
Keywords:upravljanje mostov, konstrukcijska varnost, odziv na prometno obtežbo, tehtanja vozil med vožnjo, prosti prometni tok na mostovih
Publication status:Published
Publication version:Version of Record
Publication date:01.12.2019
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
Year of publishing:2019
Number of pages:str. 291-298
Numbering:Letn. 68
PID:20.500.12556/DiRROS-17435 New window
UDC:624
ISSN on article:0017-2774
COBISS.SI-ID:2512999 New window
Publication date in DiRROS:04.12.2023
Views:711
Downloads:303
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Record is a part of a journal

Title:Gradbeni vestnik. glasilo Zveze društev gradbenih inženirjev in tehnikov Slovenije
Shortened title:Gradb. vestn.
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
ISSN:0017-2774
COBISS.SI-ID:859140 New window

Licences

License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.

Secondary language

Language:English
Title:Using weigh-in-motion systems for optimal assessment of bridges
Abstract:Bridge management requires accurate information on the status of the bridge in order to achieve optimal balancing of maintenance costs, potential risks and overall bridge performance. One of the key performance indicators is structural safety of the bridge, which requires in-depth knowledge of traffic loads, as well as of bridge resistance to that load. Assessment is primarily needed for ageing bridges that are deteriorated and close to the end of their life cycle. Safety of such bridges is often difficult to prove when using only the traditional analytical methods. To avoid unnecessary actions, such as strengthening or even replacement of a bridge, it is beneficial to perform material testing and to measure the bridge response under traffic loading. This paper presents the benefits of bridge weigh-in-motion (B-WIM) technology, which can efficiently measure bridge performance parameters that are vital for optimal bridge safety assessment: axle loads and spacings of all vehicles, as well as influence lines, girder distribution factors and dynamic amplification of the structure. Knowing of the true values of these indicators significantly reduces uncertainties associated with the load effects that are used in safety assessment. In addition, having measured rather than estimated parameters allows reducing the safe-ty factors used in the analyses. This results in more optimal maintenance measures and use of infrastructure, which results in more rational use of available financial resources.
Keywords:bridge management, structural safety, response under traffic loading, bridge weigh-in-motion


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