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Samenvatting Hoofdstuk 5 structuur en morfologie

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Hoofdstuk 5 structuur en morfologie

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Uploaded on
May 9, 2022
Number of pages
6
Written in
2021/2022
Type
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STRUCTUUR EN
MORFOLOGIE: H5
EVA HERMAN




VAKWERK EN BALK
UITWISSELINGEN

Vakwerkligger  balkligger




Zelfde structuren, vector actieve structuren over elkaar leggen + kracht  krachtverdeling (T&D)

Interne krachten in de balk:




Vakwerk vrijmaken ih midden.

- Boven: druk
- Onder: trek
- F onder = F boven

Ontstaan van een moment

0,5kN komt iedere keer terug  er zit een
verband tussen + neemt af (T&D)


1

, Vakwerk op andere plaats vrijmaken.

- F onder ≠ F boven
- F in diagonale richting



Ontstaan van dwars -en langskracht




Balk naar analogie met vakwerk  moment: hangt af van D en T in uiterste vezel en grootst ih midden vd
overspanning.

Schuifkracht: hangt af van F doorheen de balk, het grootst aan de zijkanten en geen ih midden.

Normaalkracht: bij horizontale belastingen.



Hoogte: rol bij opname moment  T en D afnemen naarmate vakwerk hoger wordt bij eenzelfde belasting en
overspanning.

Onderlinge afstand: rol bij hoe kleiner de afstand, hoe minder normaalkrachten deze moet opnemen.




PUNTLAST

1) Moment bij puntlast




Druk: MIN

Trek: PLUS




2
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