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Connection Design As Per Bs en 1993-1-8:2005

This document provides design details for a vertical stub to monorail beam connection according to BS EN 1993-1-8:2005. It specifies the material properties and performs checks for the bolts and welds. The bolts are checked for shear, bearing, tension, and combined shear and tension loading and found to be safe. The welds are also checked and found to have adequate capacity. Finally, the plate thickness is checked for bending and found to meet the minimum required thickness.

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234 views3 pages

Connection Design As Per Bs en 1993-1-8:2005

This document provides design details for a vertical stub to monorail beam connection according to BS EN 1993-1-8:2005. It specifies the material properties and performs checks for the bolts and welds. The bolts are checked for shear, bearing, tension, and combined shear and tension loading and found to be safe. The welds are also checked and found to have adequate capacity. Finally, the plate thickness is checked for bending and found to meet the minimum required thickness.

Uploaded by

waquarstr
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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CONNECTION DESIGN AS PER BS EN 1993-1-8:2005

DESIGN DATA

Structural steel grade = S355


Yeid Strength = 355 N/mm²
Ultimate Tensile Strength = 430 N/mm²
Modulus of elasticity of steel , E = 210000 N/mm²

VERTICAL STUB TO MONORAIL BEAM CONNECTION


Max FX = 17.9 KN Refer Attahed staad out put
Max FZ = 0 KN
Max FY = 133.3 KN
Max Mx = 29.3 KNm
BOLT CHECK FOR SHEAR
Design Criteria = Fv,Ed < Fv,Rd

Total Design Shear Force = 17.9 KN


Number Bolt provided = 8
Dia of Bolt = 20 mm
Area of rod = 314.1593 mm²
Design Shear per Bolt (Fv,Ed) = 2.24 KN
Design shear resistance per bolt ( Fv,Rd) =

fub = 800 N/mm² Refer Table 3.1 BS EN 1993-1-8:2005


ƳM2 = 1.25 Refer Table 2.1 BS EN 1993-1-8:2005
Fv,Rd = (0.6 x 800 x 0.75 x A )/1.25
= 90.48 KN
KN <
(Fv,Ed) 2.24 KN < 90.48 KN ( Fv,Rd)
HENCE BOLT SAFE SHEAR
BOLT CHECK FOR BEARING
Design Criteria = Fv,Ed < Fb,Rd
Plate thickness (t) = 12 mm
Design Bearing Resistance per bolt ( Fb,Rd) =

Ultimate Tensile Strength (fu) = 510 N/mm²


ɑb = 1 Refer Table 3.4 BS EN 1993-1-8:2005
( Fb,Rd) = 137.088 KN
(Fv,Ed) 2.24 KN < 137.09 KN ( Fb,Rd)
HENCE BOLT SAFE BEARING
BOLT CHECK FOR TENSION
Design Criteria = Ft,Ed < Ft,Rd

Design Tension Resistance per bolt ( Ft,Rd) =

K2 = 0.63 Refer Table 3.4 BS EN 1993-1-8:2005


Design Tension Resistance per bolt ( Ft,Rd) 95.00 KN
Design of Tensile force per rod ( Ft,Ed)
Direct Tension = 133.3 KN
Direct Tension Per rod = 133.3/8
= 16.66 KN
Tension Due To moment
Bolt Neutral Axis (d/7) = 58.33 mm
top bolt c-l
Ft = M x (dmax) / d^2 bolt in tension
First row of bolt Tension (Ft1 )
Ft = 29.3 x 10^6 x222.5 /(( 222.5^2 +122.5^2+22.5^2)x2) 222.5
first row bolt Ft1 = 50.136 KN

Total Tension per rod = 66.80 KN


( Ft,Ed) = 66.80 KN
77.5 bolt in compresion
Second row of bolt Tension (Ft2 )
Ft = 25.3 x 10^6 x122.5 /(( 222.5^2 +122.5^2+22.5^2)x2)
first row bolt Ft12 = 23.88 KN
Total Tension per rod = 40.54
Third row of bolt Tension (Ft3 )
Ft = 25.3 x 10^6 x22.5 /(( 222.5^2 +122.5^2+22.5^2)x2)
first row bolt Ft1 = 2.5 KN
Total Tension per rod = 19.16 KN
( Ft,Ed) = 66.80 KN

( Ft,Ed) 66.80 KN < 95.00 KN ( Ft,Rd)


HENCE BOLT SAFE TENSION
BOLT COMBINE SHEAR AND TENSION CHECK
Fv,Ed + Ft,Ed <1
Fv,Rd 1.4x Ft,Rd
2.2375 + 66.80 = 0.53
90.48 133.00
HENCE BOLT SAFE IN COMBINE SHEAR AND TENSION

WELD CAPACITY CHECK


Design Criteria = Fw,Ed < Fw,Rd
Design weld resistance per unit length (Fw,Rd) = fvw.d x a
fvw.d = 220 0 Refer clause 4.5.3.3 BS EN 1993-1-8:2005
a = 6 mm
Fw,Rd = 1320 N/mm
Length of the weld = 250 mm
Total weld resistance (Fw,Rd) = 330 KN
> 253.01 KN
HENCE OK

PLATE CHECK FOR BENDING

N,Ed = 271 KN (Total Tension for two Bolt)


Maximum length of plate between column web to Bolt line( c ) = 20
Maximum Moment (Mpl,1,Rd,u) = 271x0.025
= 5.42 KNm
Thickness of Plate provided 16+16 = 32 mm
=
Thickness of Plate required = 1.1x8.13
0.25x0.1x3555x1000
= 25.92 mm
Provided Plate Thickness = 32 mm
Hence Safe

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