2._calculul_grinda_secundara.pdf
DESCRIPTION
platforma metalica - grinda secundaraTRANSCRIPT
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Grinda secundara
1. Alcătuire
12. Grinda secundara
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2. Evaluarea încărcărilor
Încărcare TipValoare
[kN/m2]
S.L.S.Coeficient
S.L.U.
Valoare Valoare
Greutate proprie platelaj G gpl 1.35
Greutate proprie grindă secundară G 0.2 … 0.3 1.35
C G Date de temă 1.35
V1 Q Date de temă 1.50
V2 Q Date de temă 1.50
pSLS pSLU
Greutatea utilajelor P1k este o incarcare concentrata de tip cvasipermanent.
P1 = 1.35 * P1n
22. Grinda secundara
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3. Calcul static qSLU = pSLU * a
qSLS = pSLS * a
qSLU
Mmax
Vmax
32. Grinda secundara
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4. Dimensionare
Profile laminate la cald tip IPE
Otel S235 JR
necyypl
yd
Ednecy
Ed
WW
f
MW
MM
,,
,
max
:aindeplinit este conditie urmatoarea carept IPE profil primul alege Se
42. Grinda secundara
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52. Grinda secundara
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5. Verificari de rezistenţă (SLU)
5.1 Verificarea in câmp
.neglijabil este sectiuneaceasta in taietoarefortei Efectul
0.1
:Verificare
2) sau 1clasa de (Sectiuni
:a)(rezistent capablEfort
:sectionalEfort
,
max
Rd
Ed
ydplyRd
Ed
M
M
fWM
MM
62. Grinda secundara
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5.2 Verificarea in reazem
0.1
:
3
)2(2
:a)(rezistent capabilEfort
:sectionalEfort
,
,
max
Rdpl
Ed
yd
vRdpl
fwfv
Ed
V
V
Verificare
fAV
ttrtbAA
VV
72. Grinda secundara
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6. Verificare de deformatie (SLS)t
t82. Grinda secundara
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7. Detaliu prindere grindă principală – grindă secundară
92. Grinda secundara