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Uticaj sila zakošenja na zamor noseće konstrukcije mosne dizalice pri njenom kretanju

On the influence of skewing forces upon the fatigue of a bridge cranestructure during travelling

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Disertacija.pdf (20.98Mb)
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Author
Zelić, Atila
Mentor
Zuber, Ninoslav
Committee members
Vladić, Jovan
Gašić, Vlada
Šostakov, Rastislav
Georgijević, Milosav
Zuber, Ninoslav
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Abstract
Disertacija obrađuje problematiku praktičnog uvođenja opterećenja izazvanih zakošavanjem dizalice u normiranu proceduru dokaza zamorne čvrstoće njene noseće konstrukcije. U prvom delu rada koncizno je izložena teorijska podloga zakošavanja mosne dizalice, neophodna za potpunije razumevanje relevantnih obeležja predmeta istraživanja. Predložene su metode za eksperimentalnu determinaciju bočnih sila u interakciji točak – šina, odn. vodeća rolna – šina. Testiranje predloženih metoda spovedeno je kroz eksperimente na realnom objektu – jednogredoj električnoj mosnoj dizalici nosivosti 3,2 t i raspona 8,91 m. Komentarisani su reprezentativni rezultati i date su smernice za sprovođenje dokaza zamorne čvrstoće detalja noseće konstrukcije dizalice, uzimajući u obzir pri tom i spektre sila zakošenja. Takođe je ukazano i na neke nejasnoće i nedorečenosti u važećim standardima, a u vezi proračunskog određivanja sila zakošenja.
The dissertation deals with the problem of practical application of loadings caused by crane skewing, in normative procedures of fatigue strength proof calculations of crane supporting structure. In the first part, the theoretical framework of bridge crane skewing, necessary for better understanding of relevant characteristics of the research topic, has been concisely elaborated. Methods are proposed for experimental determination of lateral forces in wheel/rail and guiding roller/rail contacts. These methods were tested through a series of experiments on a real object – an electrically driven single girder bridge crane with a capacity of 3.2 t, and span 8.91 m. Some representative measurement results are discussed and guidelines are given for performing the fatigue strength proof calculation of crane supporting structure details, taking into account skewing forces spectra, too. Also, attention has been drawn to certain unclear points and inconsistencies in norms in force, concerning c...alculative determination of skewing forces.

Faculty:
University of Novi Sad, Faculty of Technical Science
Date:
02-07-2018
Projects:
  • The application of information technologies in the ports of Serbia from the monitoring of machines to the networked system with the EU environment (RS-35036)
Keywords:
zakošavanje mosne dizalice / bridge crane skewing / eksperimentalno određivanje silazakošenja / spektar opterećenja / dokaz zamorne čvrstoće / experimental determination of skewing forces / load spectrum / proof of fatigue strength
[ Google Scholar ]
URI
http://nardus.mpn.gov.rs/handle/123456789/9580
https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija152266792098750.pdf?controlNumber=(BISIS)107221&fileName=152266792098750.pdf&id=11115&source=NaRDuS&language=sr
https://www.cris.uns.ac.rs/record.jsf?recordId=107221&source=NaRDuS&language=sr
https://www.cris.uns.ac.rs/DownloadFileServlet/IzvestajKomisije152266794617598.pdf?controlNumber=(BISIS)107221&fileName=152266794617598.pdf&id=11116&source=NaRDuS&language=sr

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