Serviceability limit state - Eurocodes
Serviceability limit state - Eurocodes
Serviceability limit state - Eurocodes
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Deformations and pre-cambering<br />
G. Hanswille<br />
Univ.-Prof. Dr.-Ing.<br />
Institute for Steel and<br />
Composite Structures<br />
University of Wuppertal-Germany<br />
δ 1<br />
δ 2<br />
δ 3<br />
δ 4<br />
combination<br />
general quasi -<br />
permanent<br />
risk of damage of adjacent<br />
parts of the structure (e.g.<br />
finish or service work)<br />
quasi –<br />
permanent<br />
(better frequent)<br />
<strong>limit</strong>ation<br />
δ max ≤ L /<br />
δ 1 deflection of the steel girder<br />
250<br />
δ c deflection of the composite<br />
girder<br />
δ w ≤ L / 500 Pre-cambering of the steel<br />
girder:<br />
δ δ<br />
1<br />
p = δ 1 + δ 2 + δ 3 +ψ 2 δ 4<br />
δ p<br />
δ max maximum deflection<br />
δ c δ w<br />
δ w<br />
δ max<br />
effective deflection for finish<br />
and service work<br />
δ 1 – self weight of the structure<br />
δ 2 – loads from finish and service work<br />
δ 3 – creep and shrinkage<br />
δ 4 – variable loads and temperature effects<br />
43
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