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statisch unbestimmte Rahmen (Fachwerke)

Fragen & Antworten zur Technischen Mechanik & Festigkeitslehre.

statisch unbestimmte Rahmen (Fachwerke)

Beitragvon saman1357 am Fr 22. Jan 2010, 11:54

Hi,
wie berechne ich die maximal zulässige Querkraft für im Anhang zu sehenden statisch unbestimmten Fachwerk (Rahmen)?
Wie ändert sich diese max. zul. Querkraft wenn ich 2 Diagonale Absteifungen (siehe Anhang) hinzufüge?
Kann mir bitte jemand weiterhelfen?

Vielen Dank im Vorraus
Saman1357

Rahmen.JPG
Rahmen.JPG (17.8 KiB) 864-mal betrachtet
saman1357
 
Beiträge: 4
Registriert: Fr 22. Jan 2010, 11:50

Re: statisch unbestimmte Rahmen (Fachwerke)

Beitragvon Nimrod am Sa 23. Jan 2010, 16:14

Zunächst einmal die Frage ist dieser Rahmen fest zusammengeschweisst oder sind noch Gelenke zwischen den einzelnen Rahmenteilen?
Sind die Querverstrebungen beim rechten Bild geschweisst oder handelt es sich um Gelenke ?
Und ist der Rahmen unten links und rechts mit einer Fest und Loslagerung oder 2 Festlagern oder 2 festen Einspannungen gelagert?

Gruß Nimrod
Nimrod
 
Beiträge: 36
Registriert: Di 1. Dez 2009, 17:38

Re: statisch unbestimmte Rahmen (Fachwerke)

Beitragvon saman1357 am Sa 23. Jan 2010, 20:05

Hi und vielen Dank für die Antwort,
der Rahmen und auch die Querverstrebungen sind fest zusammen geschweißt (verschraubt). Der Rahmen ist unten links und rechts mit 2 festen Einspannungen gelagert. Es bestehen also keine Gelenke.

MfG
Saman
saman1357
 
Beiträge: 4
Registriert: Fr 22. Jan 2010, 11:50

Re: statisch unbestimmte Rahmen (Fachwerke)

Beitragvon Nimrod am Do 28. Jan 2010, 23:05

Dann einfach als ein Bauteil nach den Regeln der Statik berechnen, relativ einfach.
Nimrod
 
Beiträge: 36
Registriert: Di 1. Dez 2009, 17:38

Re: statisch unbestimmte Rahmen (Fachwerke)

Beitragvon Zhah001 am Sa 20. Dez 2014, 12:07

Hi,
weiß jemand wie ich die Durchbiegung eines geschlossenen Trägers berechnen kann? Es handelt sich um ein geschlossenen Trog, das Problem ist aber dass die Last nicht von oben auf den Querschnitt wirkt sondern von innen (auf die Innenseite des Querschnitts). Eine Zeichnung ist beigefügt.

Vielen Dank im Vorraus
Zhah001
 
Beiträge: 1
Registriert: Sa 20. Dez 2014, 11:57


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