Bending & Shear — EN 1993-1-1:2005 & EN 1993-1-8:2005 (Eurocode 3)
1 Bolt Properties
Bolt Size & Class
350mm²tensile stress area
EN 1993-1-8 Table 3.1
300N/mm²bolt yield strength
500N/mm²bolt ultimate strength
Safety Factor
EN 1993-1-8 Table 2.1
Design Strengths
240.00N/mm²= fyb / γM2
Figure 1 — Bolt layout & lever arms (interactive)
2 Connection Geometry
Bolt Pattern
bolts per row
bolt rows
6total bolts
Lever Arms (distance from rotation point)
3 Bending Moment Capacity
Bolt forces proportional to distance from rotation point (bottom flange). Each bolt row contributes Fi = As · fyd · nlines · (di / d1)
Bolt Row Forces
Row
di (mm)
di/d1
Fi (kN)
Mi (kN·m)
Figure 2 — Force distribution & moment arms (interactive)
Mcap= Σ Fi · di
Bending Moment Capacity
100.80 kN·m
Total bolt tension force
403.2 kN
4 Shear Capacity
Shear resistance per bolt per EN 1993-1-8:2005 Table 3.4 — shear plane passes through the threaded portion of the bolt.
αv= 0.6 (classes 4.6, 5.6, 8.8)=0.60
Fv,Rd= αv · fub · As / γM2=84.00kN/bolt
nbolts= lines × rows=6
VRd= nbolts · Fv,Rd
Shear Capacity of Connection
504.00 kN
Shear per bolt Fv,Rd
84.00 kN
References: EN 1993-1-1:2005 — Eurocode 3: Design of steel structures — Part 1-1: General rules and rules for buildings
EN 1993-1-8:2005 — Eurocode 3: Design of steel structures — Part 1-8: Design of joints