"14421000" - 1 õppematerjal

Tala tugevusanalüüs

5 )​4 0 = 5 ϕ​0​EI ​+ ( 2700 / 6 ) 5​3​ ​+ ( 4000 / 24 )​ ​( 5 - 2.5 )​4 0 = 5 ϕ​0​EI ​+ 56250 ​+ 6510.4​ ​=​ ​5 * ϕ​0​EI + 62760.4 5 ϕ​0​EI = - 62760.4 ϕ​0​EI = -62760.4 / 5 = - 12552.08 4 INP280 tala telg-inertsimoment I​x = ​ 7590 cm​ EI =190 * 109 * 7590 * 10−8 = 14421000 N / m​2 ϕ​0 ​= - 12552.08 / 14421000 = 0.00087 rad = 0.05⁰ Tala vaba otsa pöördenuk: x = 7.6 ϕ * 14421000 = 0.000574 * 14421000 ​+ ( 2700 / 2 ) 7.6​2​ ​+ ( 22700 / 2 ) ( 7.6 – 5 )​2 ​+ ( 4000 / 6 ) ( 7.6 - 2.5 )​3​ ​- ( 4000 / 6 ) ( 7.6 - 5 )​3 ϕ * 14421000 = 8277.654 ​+ 77976​ ​+ 76726​ ​+ 88434 ​- 11717.3 ϕ = 0.01662 rad = 0.95⁰ Tala vaba otsa läbipaine: v * 14421000 = 0.000574 * 7.6 * 14421000 ​+ ( 2700 / 6 ) 7.6​3​ ​+ ( 22700 / 6 ) ( 7.6 – 5 )​3 ​ ​+ (