- Kari kolehmainen Samaa tarkoittava suhdelaskenta

Taipuman periaateenglish_translation.jpg

Deflection principle.

                         1,1

                    1,1 x 1,1                   = 1,21

               1,1 x 1,1 x 1,1              = 1,331

         1,1 x 1,1 x 1,1 x 1,1          = 1,4641

     1,1 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

 

2-tukinen_kannatustapaus.jpg

 

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

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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)

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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)

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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)

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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)

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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)

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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

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Suhteellisuus kattaa viisi porrastusta, esimerkissä on laskettu kuusi porrastusta.

Proportionality has five steps, but the example has six steps.

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21.6.2018*8:00 (189 - 43940)
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