BEF-PCSTATIK PC-Statik Bjælkeberegning efter EC2
BEF-PCSTATIK PC-Statik Bjælkeberegning efter EC2
BEF-PCSTATIK PC-Statik Bjælkeberegning efter EC2
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Udvikling Konstruktioner <strong>PC</strong>-<strong>Statik</strong><br />
<strong>BEF</strong>-<strong><strong>PC</strong>STATIK</strong> <strong>Bjælkeberegning</strong> <strong>efter</strong> <strong>EC2</strong><br />
Indholdsfortegnelse<br />
1 Indledning.........................................................................3<br />
2 Kort beskrivelse af programmet.........................................4<br />
ALECTIA A/S<br />
2.1 Kold beregning............................................................................. 4<br />
2.2 Brandberegning............................................................................ 5<br />
3 Fortolkning af <strong>EC2</strong> - Kold tilstand.......................................6<br />
3.1 Momentkapacitet .......................................................................... 6<br />
3.2 Forskydning og Vridning ................................................................ 6<br />
3.3 Deformationer.............................................................................. 6<br />
3.4 Revnevidder................................................................................. 7<br />
3.5 Minumumsarmering og afstand mellem armering ............................. 7<br />
4 Teoretisk baggrund - Kold tilstand.....................................8<br />
4.1 Bæreevne ved bøjning .................................................................. 8<br />
4.2 Bæreevne ved kombineret forskydning og vridning ......................... 19<br />
4.3 Beregning af forankringskraft ....................................................... 21<br />
4.4 Beregning af stivhed ................................................................... 23<br />
4.5 Svind ........................................................................................ 27<br />
4.6 Revnevidder............................................................................... 30<br />
5 Beregningseksempel - Kold tilstand ................................. 31<br />
5.1 Belastning ................................................................................. 32<br />
5.2 Materialer .................................................................................. 33<br />
5.3 Minimumsarmering ..................................................................... 34<br />
5.4 Afstandskrav for armering ........................................................... 35<br />
5.5 Beregning af moment kapacitet.................................................... 37<br />
5.6 Kombineret forskydning og vridning.............................................. 39<br />
5.7 Forankringskraft ......................................................................... 40<br />
5.8 Teoretiske krybetal ..................................................................... 41<br />
5.9 Beregning af stivhed ................................................................... 42<br />
5.10 Svind ........................................................................................ 44<br />
5.11 Nedbøjning ................................................................................ 46<br />
5.12 Revnevidder............................................................................... 46<br />
6 Fortolkning af <strong>EC2</strong> - brandtilstand ................................... 50<br />
6.1 Reduktion af tværsnit og materialeparametre................................. 50<br />
17681-<strong>BEF</strong>-<strong><strong>PC</strong>STATIK</strong>-318422-2.doc Side 1 af 66