Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus

New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Jarosław Zwolski [verfasserIn] Jan Bien [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2011

Schlagwörter:	bridge dynamics modal analysis exciter vibration test field test

Übergeordnetes Werk:	In: Journal of Civil Engineering and Management - Vilnius Gediminas Technical University, 2018, 17(2011), 4
Übergeordnetes Werk:	volume:17 ; year:2011 ; number:4

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.3846/13923730.2011.632489

Katalog-ID:	DOAJ069392609

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spelling	10.3846/13923730.2011.632489 doi (DE-627)DOAJ069392609 (DE-599)DOAJa24158ff78614cada6ed2348443c8345 DE-627 ger DE-627 rakwb eng TH1-9745 Jarosław Zwolski verfasserin aut Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas bridge dynamics modal analysis exciter vibration test field test Building construction Jan Bien verfasserin aut In Journal of Civil Engineering and Management Vilnius Gediminas Technical University, 2018 17(2011), 4 (DE-627)634757601 (DE-600)2571620-7 18223605 nnns volume:17 year:2011 number:4 https://doi.org/10.3846/13923730.2011.632489 kostenfrei https://doaj.org/article/a24158ff78614cada6ed2348443c8345 kostenfrei https://www.jbem.vgtu.lt/index.php/JCEM/article/view/5257 kostenfrei https://doaj.org/toc/1392-3730 Journal toc kostenfrei https://doaj.org/toc/1822-3605 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 17 2011 4
allfields_unstemmed	10.3846/13923730.2011.632489 doi (DE-627)DOAJ069392609 (DE-599)DOAJa24158ff78614cada6ed2348443c8345 DE-627 ger DE-627 rakwb eng TH1-9745 Jarosław Zwolski verfasserin aut Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas bridge dynamics modal analysis exciter vibration test field test Building construction Jan Bien verfasserin aut In Journal of Civil Engineering and Management Vilnius Gediminas Technical University, 2018 17(2011), 4 (DE-627)634757601 (DE-600)2571620-7 18223605 nnns volume:17 year:2011 number:4 https://doi.org/10.3846/13923730.2011.632489 kostenfrei https://doaj.org/article/a24158ff78614cada6ed2348443c8345 kostenfrei https://www.jbem.vgtu.lt/index.php/JCEM/article/view/5257 kostenfrei https://doaj.org/toc/1392-3730 Journal toc kostenfrei https://doaj.org/toc/1822-3605 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 17 2011 4
allfieldsGer	10.3846/13923730.2011.632489 doi (DE-627)DOAJ069392609 (DE-599)DOAJa24158ff78614cada6ed2348443c8345 DE-627 ger DE-627 rakwb eng TH1-9745 Jarosław Zwolski verfasserin aut Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas bridge dynamics modal analysis exciter vibration test field test Building construction Jan Bien verfasserin aut In Journal of Civil Engineering and Management Vilnius Gediminas Technical University, 2018 17(2011), 4 (DE-627)634757601 (DE-600)2571620-7 18223605 nnns volume:17 year:2011 number:4 https://doi.org/10.3846/13923730.2011.632489 kostenfrei https://doaj.org/article/a24158ff78614cada6ed2348443c8345 kostenfrei https://www.jbem.vgtu.lt/index.php/JCEM/article/view/5257 kostenfrei https://doaj.org/toc/1392-3730 Journal toc kostenfrei https://doaj.org/toc/1822-3605 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 17 2011 4
allfieldsSound	10.3846/13923730.2011.632489 doi (DE-627)DOAJ069392609 (DE-599)DOAJa24158ff78614cada6ed2348443c8345 DE-627 ger DE-627 rakwb eng TH1-9745 Jarosław Zwolski verfasserin aut Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas bridge dynamics modal analysis exciter vibration test field test Building construction Jan Bien verfasserin aut In Journal of Civil Engineering and Management Vilnius Gediminas Technical University, 2018 17(2011), 4 (DE-627)634757601 (DE-600)2571620-7 18223605 nnns volume:17 year:2011 number:4 https://doi.org/10.3846/13923730.2011.632489 kostenfrei https://doaj.org/article/a24158ff78614cada6ed2348443c8345 kostenfrei https://www.jbem.vgtu.lt/index.php/JCEM/article/view/5257 kostenfrei https://doaj.org/toc/1392-3730 Journal toc kostenfrei https://doaj.org/toc/1822-3605 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 17 2011 4
language	English
source	In Journal of Civil Engineering and Management 17(2011), 4 volume:17 year:2011 number:4
sourceStr	In Journal of Civil Engineering and Management 17(2011), 4 volume:17 year:2011 number:4
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	bridge dynamics modal analysis exciter vibration test field test Building construction
isfreeaccess_bool	true
container_title	Journal of Civil Engineering and Management
authorswithroles_txt_mv	Jarosław Zwolski @@aut@@ Jan Bien @@aut@@
publishDateDaySort_date	2011-01-01T00:00:00Z
hierarchy_top_id	634757601
id	DOAJ069392609
language_de	englisch
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callnumber-first	T - Technology
author	Jarosław Zwolski
spellingShingle	Jarosław Zwolski misc TH1-9745 misc bridge misc dynamics misc modal analysis misc exciter misc vibration test misc field test misc Building construction Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus
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topic_title	TH1-9745 Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus bridge dynamics modal analysis exciter vibration test field test
topic	misc TH1-9745 misc bridge misc dynamics misc modal analysis misc exciter misc vibration test misc field test misc Building construction
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title	Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus
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title_full	Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus
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title_sort	modal analysis of bridge structures by means of forced vibration tests / tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus
callnumber	TH1-9745
title_auth	Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus
abstract	New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas
abstractGer	New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas
abstract_unstemmed	New modern bridges and older structures exposed to accelerated deterioration need permanent condition monitoring. The major tools used in bridge condition evaluation are based on the results of the experimental modal analysis of bridge structures. This paper focuses on the methodology of Forced Vibration Tests performed by means of mechanical exciters. A comprehensive testing system called MANABRIS, developed at Wroclaw University of Technology, is presented. The system is equipped with a rotational eccentric mass exciter and dedicated software for programming and controlling the tests and for acquiring and processing measurement data. The results of a Forced Vibration Test carried out on a typical railway bridge are compared with the results of a conventional modal test of the structure excited by trains. The precision of the considered testing techniques is evaluated and the range of their effective application is proposed. Santrauka Naujų šiuolaikinių tiltų ir senesnių konstrukcijų, kurias veikia greitesnio nusidėvėjimo procesai, būklę reikia nuolat stebėti. Pagrindinės priemonės, taikomos tilto būklei vertinti, pagrįstos tilto konstrukcijų eksperimentinės modalinės analizės rezultatais. Šiame straipsnyje pagrindinis dėmesys skiriamas priverstinės vibracijos testams (angl. Forced Vibration Tests), atliktiems naudojant mechaninio žadinimo generatorius. Pristatoma išsami bandymo sistema, pavadinta MANABRIS, kuri buvo sukurta Vroclavo technologijos universitete. Sistemoje yra sukamasis ekscentriškas masės sužadintuvas ir programinė įranga, skirta testams programuoti ir kontroliuoti, norint gauti ir apdoroti matavimų duomenis. Priverstinės vibracijos testo (angl. Forced Vibration Test), atlikto su įprastu geležinkelio tiltu, rezultatai lyginami su tradicinio modalinio testo rezultatais, gautais konstrukcijas veikiant traukiniais. Vertinamas testo tikslumas ir siūlomi jo efektyvaus pritaikymo būdai. Reikšminiai žodžiai: tiltas, dinamika, modalinė analizė, sužadintuvas, vibracijos testas, lauko testas
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title_short	Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus
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Modal analysis of bridge structures by means of forced vibration tests / Tilto konstrukcijų modalinė analizė taikant priverstinės vibracijos testus

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