The longitudinal shear stress vEd,f at the connection between a flange and a web is determined by the longitudinal force difference ΔFd,f in the flange's governing part according to EN 1992-1-1 [1], Clause 6.2.4 (3), Equation (6.20).
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hf |
Chord thickness at the connection |
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|
Considered length |
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|
Longitudinal force difference in the flange over the length Δx |
The maximum value that may be assumed for the length Δxf is half the distance between the maximum and the zero point of moments. Where concentrated loads are applied, the distance between the concentrated loads should not be exceeded.
ΔFd,f is determined by integrating the stresses for the corresponding cross-sectional areas.
The required tension reinforcement due to the shear forces per section length asf can be determined using Equation (6.21).
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1,0 |
Inclination of the concrete compression strut for compression flanges |
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1,0 |
Inclination of the concrete compression strut for tension flanges |
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fyd |
Design yield strength of reinforcement |
At the same time, it is necessary to ensure that the compression struts in the flange do not fail. This is achieved by fulfilling the following requirement according to [1] (6.22).
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|
Reduction factor for concrete strength in case of shear cracks |
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fcd |
Design value of concrete strength |
![Formula Symbols for Connection Between Chords and Web (Source: [1])](/en/webimage/009346/2418256/01-en-3-png.png?mw=760&hash=459cd80d886273f46fdc005fa46bb8c50f8e61d1)