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Samenvatting - Sterkteleer

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In dit document bevinden zich alle lessen van sterkteleer op chronologische volgorde in de vorm van een samenvatting. Deze lessen werden gegeven door filip van de voorde.

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Uploaded on
December 15, 2024
Number of pages
44
Written in
2022/2023
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STERKTELEER

,INHOUD
1. inleiding ................................................................................................................................................. 4
basiseisen constructie: sterkte/ stijfheid/ stabiliteit .................................................................................... 4
ordening in het ontwerp ............................................................................................................................. 4
Intermezzo: doorbuiging (zie later) ............................................................................................................ 5
belastingen en veiligheidsfactoren ............................................................................................................. 6
mobiel gewicht ........................................................................................................................................... 7
1. Gebruiksbelasting............................................................................................................................... 7
2. windlast: algemene formule ............................................................................................................... 7
2. sneeuwbelasting ............................................................................................................................ 7
4. wateraccumulatie ............................................................................................................................... 8
5. hydrostatische waterdruk ................................................................................................................... 8
6. grondruk ............................................................................................................................................. 8
7. temperatuursverschillen ..................................................................................................................... 9
8. trillingen .............................................................................................................................................. 9
veiligheidsfactoren/ belastingen ................................................................................................................. 9
iso- en hyperstatisch/ opleggingen .......................................................................................................... 10
Isostatisch vs hyperstatische balken hypostatisch is niet in evenwicht ................................................... 13
3. normaalspanningen en schuifspanningen ...................................................................................... 15
uitwendig evenwicht ................................................................................................................................. 15
Inwendige spanningen ............................................................................................................................. 16
snedekrachten ............................................................................................................................................. 17
enkelvoudige druk of trek ......................................................................................................................... 17
Enkelvoudige buiging ............................................................................................................................... 18
Enkelvoudige afschuiving ........................................................................................................................ 18
dwarskracht .......................................................................................................................................... 18
langskracht ........................................................................................................................................... 19
enkelvoudige torsie of wringing ............................................................................................................... 19
Additiewet .................................................................................................................................................... 19
Globaal evenwicht .................................................................................................................................... 20
oefeningen ................................................................................................................................................... 20
4. materiaalkarakteristieken/ belastingen ............................................................................................ 20
Spanning – rek -diagram.......................................................................................................................... 20
Wet van Hooke, coeff. Van Poisson ........................................................................................................ 22
Lange duur-effecten ................................................................................................................................. 23

, kruip ...................................................................................................................................................... 23
relaxatie ................................................................................................................................................ 23
Invloed van temperatuur....................................................................................................................... 23
brandweerstand .................................................................................................................................... 23
5. enkelvoudige trek en druk .................................................................................................................... 24
Samengestelde doorsnede ...................................................................................................................... 25
M- en V-lijnen ........................................................................................................................................... 26
6. enkelvoudige buiging............................................................................................................................ 27
zwaartepunt van een oppervlak ............................................................................................................... 27
spanning en doorbuiging bij een ligger op 2 steunpunten ....................................................................... 30
7. Case study Centre Pompidou (Paris) ................................................................................................... 31
8. samengestelde buiging (M+V+N) ............................................................................................................ 31
Voorgespannen beton .............................................................................................................................. 32
9. Hout ......................................................................................................................................................... 32
10. Staal....................................................................................................................................................... 33
MIG lassen of halfautomaat ..................................................................................................................... 33
Materiaalkarakteristieken (elastisch) ....................................................................................................... 33
11. Beton ..................................................................................................................................................... 35
Materiaalkarakteristieken ......................................................................................................................... 35
OEFENINGEN ......................................................................................................................................... 35
12. dwarse (horizontale) stabiliteit ............................................................................................................... 36
horizontale krachten ................................................................................................................................. 36
Hoogbouw ................................................................................................................................................ 39
Structuurconcepten hoogbouw ................................................................................................................ 39
13. Herhaling ............................................................................................................................................... 41

, 1. INLEIDING
o Formularium voor examen (geen formules van buiten kennen)

BASISEISEN CONSTRUCTIE: STERKTE/ STIJFHEID/ STABILITEIT

o Vitruvius
o Functionele en structurele logica zorgen voor de schoonheid van een gebouw
o Draagstructuur
 Om krachten op te nemen is een draagstructuur nodig
− Gebouwen
− Bruggen, tunnels, wegen
− Meubels
− Auto’s
− Huishoudapparaten
− Mensen, planten, dieren
 Draagstructuur kan het hele object zijn, of een deel
− Hele object
− Structuur binnen: skelet
− Structuur buiten: exoskelet

ORDENING IN HET ONTWERP

o Coördinaten (3D)
o Vastleggen ten opzichte van referentie (nulpunt) + schaal
= alle lengtes, breedtes en andere afmetingen liggen ondubbelzinnig vast
(deze dia niet belangrijk)
o Definities
 Assenstelsel! = stelsel van (drie) assen die elkaar snijden
− ieder punt kan ruimtelijk vastgelegd worden op basis van
coördinaten tov de oorsprong (kan ook radiaal)
˂ makkelijker tijdens ontwerp MAAR ook tijdens bouw!
 grid of rooster = stelsel van lijnen dat de positie van de elementen
 stramien = regelmatig patroon van herhalende lijnen op een vaste afstand (ritme)
o regelmaat en herhaling inbouwen:
 bouwbaarheid verhogen
 functionaliteit verhogen
 vlotte communicatie
 economisch
 ritmiek -> schoonheid

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samenvattingen

Hey, al mijn samenvattingen zijn op dezelfde manier opgebouwd. Het is geordend volgens de lessen alsook beeldmateriaal is terug te vinden in elke samenvatting. Het begin met een inhoudsopgave en gaat zo chronologisch de lessen af. Elke samenvatting bevat de volledige lesinhoud.

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