Taipuman periaateDeflection principle.
1,11,1 x 1,1 = 1,211,1 x 1,1 x 1,1 = 1,3311,1 x 1,1 x 1,1 x 1,1 = 1,46411,1 x 1,1 x 1,1 x 1,1 x 1,1 = 1,61051 Kultainen leikkaus - Golden Ratio 1,618
Profile L1000 σt Ix Wx Iy Wy Area Nimike cm kN/cm2 cm4 cm3 cm4 cm3 kg/m A cm2 HEB100 518 2,2 450 90 167 33,5 20,4 26
1,0 - 1,1(2) - 1,25
Kun jänneväli kasvaa 1,1-kertaa pitemmäksi, taipuma kasvaa 25 % ja taivutusjännitys 12 %. Kerroin 1,12 on kaikille profiileille. When the span increases 1,1 times longer, deflection increase 25 % and tension 12 %. The Factor 1,12 is to all profiles.
Taulukko kuvan yläpuolella - The table above the image: L = 518 cm Deflection f = 0,518 cm σt = 2,2 kN/cm2 f / L = 1:800 Tunnettu tieto, joka tarvitaan - the needed known data ________________________________ L = 1,1 x 518 = 570 cm f = 0,71 cm σt = 2,49 kN/cm2 (Calculation program) ( 570 cm / 1000 x 1,25 = 0,71 cm 2,2 kN/cm2 x 1,12 = 2,47 kN/cm2 ) 570 cm / 0,71 = 1:800 σt = 2,49 kN/cm2 / 2,2 kN/cm2 = 1,1( 4) ________________________________ L = 1,12 x 518 = 627 cm f = 0,99 cm σt = 2,83 kN/cm2 (Calculation program) ( 627 cm / 1000 x 1,252 = 0,98 cm 2,2 kN/cm2 x 1,122 = 2,76 kN/cm2 ) 627 cm / 0,99 cm = 1:630 σt = 2,83 kN/cm2 / 2,49 kN/cm2 = 1,1(4) ________________________________ L = 1,13 x 518 = 689 cm f = 1,37 cm σt = 3,24 kN/cm2 (Calculation program) ( 689 cm / 1000 x 1,253 = 1,35 cm 2,2 kN/cm2 x 1,123 = 3,1 kN/cm2 ) 689 cm / 1,34 cm = 1:500 σt = 3,24 kN/cm2 / 2,83 kN/cm2 = 1,1(5) ________________________________ L = 1,14 x 518 = 758 cm f = 1,91 cm σt = 3,71 kN/cm2 (Calculation program) ( 758 cm / 1000 x 1,254 = 1,85 cm 2,2 kN/cm2 x 1,124 = 3,46 kN/cm2 ) 758 cm / 1,91 cm = 1:400 σt = 3,71 kN/cm2 /3,24 kN/cm2 = 1,1(5) ________________________________ L = 1,15 x 518 = 834 cm f = 2,67 cm σt = 4,25 kN/cm2 (Calculation program) ( 834 cm / 1000 x 1,255 = 2,55 cm 2,2 kN/cm2 x 1,125 = 3,89 kN/cm2 ) 834 cm / 2,67 cm = 1:315 σt = 4,25 kN/cm2 /3,24 kN/cm2 = 1,1(3) ________________________________ L = 1,16 x 518 = 918 cm f = 3,73 cm σt = 4,89 kN/cm2 (Calculation program) ( 918 cm / 1000 x 1,256 = 3,50 cm 2,2 kN/cm2 x 1,126 = 4,35 kN/cm2 ) 918 cm / 3,73 cm = 1:250 σt = 4,89 kN/cm2 /4,25 kN/cm2 = 1,1(5) .... 2,5 - 3,15 - 4,0 - 5,0 - 6,3 - 8,0 - 10 ______________________________________
Suhteellisuus kattaa viisi porrastusta, esimerkissä on laskettu kuusi porrastusta. Proportionality has five steps, but the example has six steps.
21.6.2018*8:00 (189 - 43940) |