Calculul grinzii transversale camerei de amestecPredimensionarea
grinziil05.75m :Materiale utilizatehg hghgl012: Beton C25/30Otel
OL37Pc52 Ob37hg.f0.5m :bgrhg.f2:bgr0.25m bgr.f0.3m :Eforturi in
grindaMmax100.67kN m :Taf74.92kN :Dimensionarea grinziifyd250
Nmm2:Procentul optim de armarep 1.8 :fcd16.67 Nmm2:p100fydfcd :
0.27 0.26 :Verificarea sectiunii grinzii dnecMmax bgr.f fcd:d 0.5m
:dnec0.278m Definitivarea inaltimii grinziiPrescriptii de armare
pentru grinda tip 1 20mm : Cmin.dur15mm : Cdev10mm : max20mm :
Cmin.bmax:Cminmin Cmin.b Cmin.dur,10mm , ( ):CnomCminCdev+
:Cnom0.02m dsCnom2+ :ds0.03m hgrd ds+ :hgr0.53m
hg.pedimensionarehg.necesarhgr.final0.5m :Inaltimea finala a
grinzii va fi dehgr.final50cm Calculul ariilor de armatura in
campbeffl02: bibeff:beff2.875m beffibeff.ibw+( )b
1] : beff.ibeff.i0.2bi0.1l0+ 0.2l0 :beff.ibibeffl02:bwbi:hf30cm
:beffbw1 hfd0.6 MEd55.13kN m :fctm2.5Nmm2: fyk355Nmm2:beffl02: b
beff:beff2.875m daca > .lim se va redimensiona
sectiuneacampMEdbeff d2 fcd: camp4.601 103 camp0.014 :Aria necesara
de armatura in zona de campAs.campcampbeff d fcdfyd
:As.camp13.419cm2 Aria minima necesara de armatura in zona de
campAs.min0.26fctmfyk1000 mmd :As.min9.155cm2 > 0.00131000 mmd
6.5cm2 As.min.seism0.5 fctmfyk 1000 mmd :As.min.seism17.606cm2 >
0.00131000 mmd 6.5 cm2 As.max0.041000 mmd :As.max200 cm2
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.superior0.15As.camp:Reguli
constructivelb.rqd4fydfcd
_
, : lb.rqd1.2m lb.minmax 0.3 lb.rqd 10 ,100mm , ( ): pentru
intinderelb.min0.36m lungimea de ancorare a barelor va fi de 1.2
mlb.min.cmax 0.6 lb.rqd 10 ,100mm , ( ):pentru
compresiunelb.min.c0.72m VEd70kN :MEd.reazem120kN m :Calculul ariei
de armatura pe reazemeAs2As.camp:d2ds: d1d2:aMEd.reazemAs2 fyd d
d2( )
1]bgr.f d2. fcd0.03 :a0.03 a20.031 :As1MEdfydd d2( )a0 < ifa2
bgr.f d fcdfyd
_
,As2+
11]a0 > if4.692cm2 :k 1 200mmd+ 1.632 :c1.5 :CRD.c0.18c0.12 :
AslAs1:bw1300mm :1Aslbw d 3.264 104 :dw1500mm :fck30 :VRD.cCRD.c
k100 1 fck( )
1]0.33
1]
1]bw1 dw1Nmm2 2.101 104 N :VRDc.min0.035k32 fck12 bw1 dw1Nmm2
5.998 104 N :VRD.c.finalVRD.cVRD.cVRDc.min ifVRDc.minVRD.cVRDc.min
if5.998 104 N :
