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    Zum Tragverhalten der Oriented Strand Boards (OSB) bei Beanspruchung durch Einzellasten.

    Zum Tragverhalten der Oriented Strand Boards (OSB) bei Beanspruchung durch Einzellasten.

    Autoren:

    Verlag:
    Fraunhofer IRB Verlag  Weitere Titel dieses Verlages anzeigen

    Erschienen: Oktober 2021
    Seiten: 156
    Sprache: Deutsch
    Preis: 30.00 €
    Maße: 210x148x10
    Einband: Taschenbuch
    Reihe: Berichte des Instituts für Bauphysik der Leibniz Universität Hannover,
    Zum Buch: Paperback
    ISBN: 9783816789574

    Inhaltsverzeichnis

    Inhalt
    BezeichnungenVIII
    1.Einleitung1
    1.1.Motivation und Ziel1
    1.2.Gliederung1
    1.3.Stand der Normung2
    2.Stand der Forschung4
    2.1.Übersicht4
    2.2.Berechnung nach „alter Norm" DIN 1052-1:19885
    2.3.Vereinfachte Berechnung von Schnittgrößen im Stahlbetonbau5
    2.4.Einflussfelder orthotroper Platten7
    2.5.Berechnung von Deckplatten aus Lamellen nach EC 5-27
    2.6.Untersuchungen zum Tragverhalten von OSB unter Einzellasten8
    3.Eigenschaften und Beschreibung von OSB10
    3.1.Definition und Herstellung von OSB10
    3.2.Unterteilung von OSB10
    3.3.Eigenschaften von OSB und deren Bestimmung11
    3.3.1.Allgemeines11
    3.3.2.Biegung12
    3.3.3.Zug/Druck14
    3.3.4.Querkontraktion15
    3.3.5.Plattenschub und Durchstanzen15
    3.3.6.Scheibenschub17
    3.3.7.Rohdichte18
    3.4.Beschreibung orthotroper Materialien21
    3.4.1.Allgemeines21
    3.4.2.Orthotrope Platten23
    3.4.3.Orthotrope Scheiben24
    3.5.Flächen aus zusammengeklebten Schichten nach EC 5-125
    4.Experimentelle Untersuchungen26
    4.1.Motivation26
    4.2.Versuchstechnik26
    4.3.Definition der Bruchlast28
    4.4.Geprüftes Material29
    4.5.Vorversuche zur Ermittlung der Materialeigenschaften der Platten29
    4.5.1.Ermittlung der Eigenschaften bei Scheibenbeanspruchung (Versuche V2)29
    4.5.2.Ermittlung der Eigenschaften bei Plattenbeanspruchung (V3+V4)30
    4.5.3.Ermittlung des Elastizitätsmoduls senkrecht zur Plattenebene33
    4.5.4.Bohrwiderstandsmessungen34
    4.6.Versuche im Übergang von der Balken- zur Plattenbeanspruchung35
    4.7.Versuche an Platten unter Einzellasten36
    5.Numerische Untersuchungen42
    5.1.Motivation42
    5.2.2D-Berechnungen mit RFEM42
    5.2.1.Verwendete Plattenelemente42
    5.2.2.Diskretisierung44
    5.2.3.Steifigkeiten44
    5.2.4.Lasteinleitung und Lagerung45
    5.2.5.Durchgeführte Berechnungen46
    5.3.3D-Berechnungen mit AN SYS47
    5.3.1.Allgemeines47
    5.3.2.Diskretisierung47
    5.3.3.Verwendete Elemente48
    5.3.4.Plastisches Materialgesetz48
    5.3.5.Ansatz der Materialeigenschaften49
    5.3.6.Lagerung und Lasteinleitung54
    5.3.7.Durchgeführte Berechnungen54
    5.4.Verifizierung der Rechenmodelle55
    5.4.1.Überprüfung der Elementierung55
    5.4.2.Überprüfung der Steifigkeiten55
    5.4.3.Überprüfung des nichtlinearen Materialmodells58
    5.4.4.Grenzen der Anwendbarkeit des nichtlinearen Materialmodells für OSB65
    6.Zur vereinfachten Berechnung der Schnittgrößen und Verformungen68
    6.1.Allgemeines68
    6.2.Transformation der Platten68
    6.3.Berechnung der Biegemomente70
    6.3.1.Biegemomente in Spannrichtung bei Belastung in Plattenmitte70
    6.3.2.Biegemomente senkrecht zur Spannrichtung72
    6.3.3.Biegemomente bei Belastung am freien Rand74
    6.4.Berechnung der Querkräfte75
    6.4.1.Querkräfte bei Belastung in Plattcnmitte75
    6.4.2.Querkräfte bei Belastung am freien Rand81
    6.5.Berechnung der Verformungen85
    6.5.1.Verformungen bei Belastung in Plattenmitte85
    6.5.2.Verformungen bei Belastung am freien Rand85
    6.6.Einfluss einer Durchlaufwirkung87
    7.Zum Tragverhalten der OSB unter Einzellasten89
    7.1.Tragverhalten bei Beanspruchung durch Biegung89
    7.1.1.Allgemeines89
    7.1.2.Beschreibung des Biegelängeneffekts89
    7.1.3.Beschreibung des Umlagerungseffekts98
    7.1.4.Lasteinleitung102
    7.1.5.Lastausbreitung104
    7.1.6.Biegung senkrecht zur Spannrichtung105
    7.2.Tragverhalten bei Beanspruchung durch Schub106
    7.2.1.Auflagernahe Belastung in Plattenmitte106
    7.2.2.Auflagernahe Belastung am freien Rand111
    7.3.Kombinierte Beanspruchung durch Schub und Biegung113
    7.4.Platten mit Nut- und Federverbindung117
    8.Bemessungsvorschlag120
    8.1.Allgemeines120
    8.1.1.Geltungsbereich120
    8.1.2.Der Lastfall Eigengewicht120
    8.2.Platten ohne schwebende Stöße im Grenzzustand der Tragfähigkeit121
    8.2.1.Biegung121
    8.2.2.Schub (Durchstanzen)122
    8.3.Platten mit schwebenden Stößen im Grenzzustand der Tragfähigkeit123
    8.3.1.Biegung123
    8.3.2.Schub124
    8.4.Grenzzustand der Gebrauchstauglichkeit124
    8.4.1.Durchbiegungen124
    8.4.2.Elastizitätsgrenze124
    8.5.Platten mit Nut- und Federverbindung125
    8.6.Durchlaufträger125
    9.Zusammenfassung und Diskussion der Ergebnisse126
    Literatur130
    Anhang134
    A. Bemessung von OSB/2/3/4 im Grenzzustand der Tragfähigkeit134
    A. 1. Zusammenfassung und Vereinfachung der Bemessungsgleichungen134
    A.2. Beispiel 1: Bemessung einer OSB/3 ohne schwebende Stöße135
    A.3. Beispiel 2: Bemessung einer OSB/4 ohne schwebende Stöße136
    A.4. Beispiel 3: Bemessung einer OSB/4 mit schwebenden Stößen137
    B. Dokumentation der Versuche (auf CD)
    B. 1. Beschreibung der Versuchsaufbauten
    B.2. Tabellarische Zusammenfassung der Versuchsprotokolle
    B.3. Versuchsdaten
    B.4. Zuschnittpläne
    C. Dokumentation der Berechnungen (auf CD)
    C.l. RFEM- Datei
    C.2. Kommentierter ztVSTS-APDL-Eingabecode