8 zgrada ramovski sistemimksus.grf.bg.ac.rs/nastava/beton/projektovanje i... · 2013. 12. 4. ·...
TRANSCRIPT
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Višespratna zgrada – okvirni (ramovski) sistem
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Pretpostavke za proračun
• Jednako podeljeno opterećenje po osnovi– “Razmazano” opterećenje od pregradnih zidova
• 1.0-1.5 kN/m2 “lake” pregrade (gipskarton i sl.)• 2.5-3.5 kN/m2 pregradni zidovi (pla opeke, šuplji pegradni blok i sl.)
– Povremeno (korisno) opterećenje • 1.5 kN.m2 stambene prostorije• 2.0 kN.m2 poslovne prostorije• 4.0 kN.m2 prodajni prostor
• Centar mase u težištu površine• Obostrano simetrična osnova• Centar mase i centar krutosti se poklapaju
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Plastični mehanizam konstrukcije
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Proračunski model konstrukcije
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Analiza gravitacionog opterećenja
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Analiza seizmičkog opterećenja(okvir R4)
Pomeranje dw sračunato na računaru
Seizmička sila po spratovima
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Tabelarni proračun - primer
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Statički proračun(primer: proračun programom SAN)
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Uticaji od zemljotresa
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Momenti savijanja - kombinacija
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Dimenzionisanje grede na savijanje
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Kontrola pomeranja konstrukcijed<H/600
Kontrola aksijalnog opterećenja stubova
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Dimenzionisanje grede na smicanje
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Dimenzionisanje stuba na savijanje
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Dimenzionisanje stuba na smicanje
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Shema armiranja
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