calcule rezistenta sarpanta

8/11/2019 Calcule rezistenta Sarpanta

1/5

MATERIALE q normat n q calcul Zona gz ce clasa de g a

daN/mp daN/mp daN/mp importanta

tigla+capriori 80 1.3 104 C 150 0.8 3 2.2

astereala 2,4cm 5 1.3 6.5

vata minerala 15 1.3 19.5 ge 0.3

popi+pane 30 1.3 39

1.3 0 a [grade] 30

1.3 0 1.25

TOTAL 130 169 1.25

1.77

0.66

qz1 normat 45

qz2 normat 63.6 cos a 0.8910

qz1 calcul 265 sin a 0.4540qz 2 calcu l 265

0.8 1

3.60 168

4.04 1.1

0.55

120.46 1

0.8248

168.31 126

583

288.77 589

367

NORMATA [daN] 520

100 324

0.9

10 425

15 589

2.336

2812.5 2.020375 FALSE

110000 FALSE

BREVIAR DE CALCUL ARPANTA

DIMENSIUNI CAPRIORI

8*10; 8x12; 10x12; 10*15; 12*15

l DIMENSIUNI FINALE CAPRIORI

mTi - Coeficient de tratare

VERIFICARE Mr > MI

VERIFICARE RIGIDITATE fmax MI

fmax


2/5


3/5

clasa imp. ga g b g c g d g e g f

I 2.8 3 1.8 2 0.4 0.6

II 2.5 2.7 1.6 1.8 0.35 0.55 III 2.2 2.4 1.4 1.6 0.3 0.5

IV 2 2.2 1.2 1.4 0.25 0.45

V 1.8 2 0 0 0 0

Zonele A, B, C, D

SLUR (GF)

SLEN

SLEND (GS)

SLUO

Zona E

SLUR (GF)

SLEN

SLEND (GS)

SLUO

92.66

28.58

121.24

244.94

0.80.45

1.039

0.321

COEFICIENTI PARTIALI DE SIGURANTA (Tab. 5)

gF ga - 0,4*(q normat / ce*gz) >= 0,3 g a

B=120daN/mp - Buzau; Piatra Neamt

0,6 - conditii deosebite

1,0 - conditii deosebite de adapostire

1,1 - obstacole in calea spulberarii zapezii

0,8 - conditii normale

DATE DIN STAS 10101/21-92

INCARCARI DATE DE ZAPADA

D=180daN/mp - Dorohoi;Radauti;Roman;Suceava

A= 90daN/mp - Cluj-Napoca

ZONA DE CALCUL

C=150daN/mp - Botosani; Bucuresti;Cotnari;Harlau;Iasi;Targu-Neamt;Bacau

E=185daN/mp - Vatra Dornei

ce - COEFICIENTUL CONDITIILOR DE EXPUNERE

DATE PT. VERIFICAREA RIGIDITATII CAPRIOR

INCARCARI PERMANENTE [daN/m]

INCARCARI DIN ZAPADA [daN/m]

TOTAL Pn+Pz [daN/m]

REACTIUNEA [daN]

STARI LIMITA ULTIME (Tab. 4)

g0 gc - 0,2*(q normat / ce*gz) >= 0,3 g c

g1 gc

0

gF gb - 0,4*(q normat / ce*gz) >= 0,3 g b

g0 gd - 0,2*(q normat / ce*gz) >= 0,3 g d

g1 gf

0.2

K1dfK2df

fp=(5/384)*(Pn*Lc^4)/(E*Ief)

fz=(5/384)*(Pz*Lc^4)/(E*Ief)


4/5

2.2

600

12.96

10.8

135

833

418

10.8

135

145.8178.2

0.8

0.45

0.058

0.044

Greutate proprie pop b*h*H*glemn*1,2 65 [daN]

React. pana ((3*Rc*2)/2)+(gcp*Lpc)/2 1764 [daN]

5461 [cm]

2868 [daN]Incarcare critica Cr = Ric*A*j*mTi

Ip= b*h^3/12

CALCUL CARACTERISTICI PANA

Lungime calcul Lpc=lp-(2*a)/2 [m]

g lemn [daN/m^3]

gcalc.pana bp*hp*g lemn*1,2[daN/m]

INCARCARI DIN ZAPADA [daN/m]

TOTAL Pn+Pz [daN/m]gpn=pn*Dp/cos a+gnp/1,1 [daN/m]

K1df

K2df

fpp=(5/384)*(gpn*Lpc^4)/(E*Iefp)

DATE PENTRU CALCUL POPI

fzp=(5/384)*(gzn*Lpc^4)/(E*Iefp)

gz normat - qz1n*dp [daN/m]

DATE PENTRU VERIFICAREA RIGIDITATE PANA

INCARCARI PERMANENTE [daN/m]

CALCULUL MOMENTELOR

g normat pana bp*hp*g lemn[daN/m]

MIp=(gIc*Lpc^2)/2 [daNm]

MIIp=(dpc*Lp^2)/8+(gIIc*Lpc)/4[daNm]


5/5

MATERIALE q normat n q calcul Zona gz ce clasa de g a

daN/mp daN/mp daN/mp importanta

tigla+capriori 30 1.2 36 C 150 0.8 1 2.8

astereala 2,4cm 15 1.3 19.5

vata minerala 5 1.3 6.5 ge 0.4

popi+pane 15 1.3 19.5

1.3 0 a [grade] 30

1.3 0 1.25

TOTAL 65 81.5 1.25

2.58

0.84

qz1 no rmat 150 clasa imp. ga g b g c g d g e g fqz2 no rmat 150 cos a 0.8660 I 2.8 3 1.8 2 0.4 0.6

qz1 calcul 387.5 sin a 0.5000 II 2.5 2.7 1.6 1.8 0.35 0.55

qz 2 calcul 387.5 III 2.2 2.4 1.4 1.6 0.3 0.5

IV 2 2.2 1.2 1.4 0.25 0.45

V 1.8 2 0 0 0 0

0.6 1 Zonele A, B, C, D

2.50 168 SLUR (GF)

2.89 1.1 SLEN

0.55 SLEND (GS)

42.35 1 SLUO

0.9218 Zona E

174.38 141 SLUR (GF)

SLEN

313 SLEND (GS)

216.72 226 SLUO145

NORMATA [daN] n 178

100 1.4 115

0.9

10 304 33.77

12 226 27.00

60.77

0.571 87.72

1440 1.443 0.8

240 DA 0.45

110000 DA 0.1930.154

5 5

2.3 1 600

0 168 9.24

1.1 8.4

226 0.55 345

1

891.25 0.909 3490

139 1162

140 0.9

1117

366

10 408 181.028

14 3490 345

526.028

26.727 296.3

2287 2.5 0.8

327 FALSE 0.45

110000 FALSE 5.85711.162

313 Greutate proprie pop b*h*H*glemn*1,2 35 [daN]

9.24 1 React. pana ((3*Rc*2)/2)+(gcp*Lpc)/2 985 [daN]

2005 120 3201 [cm]

500 1.25 3373 [daN]196 0.8

4.0 1

124 0.983

0.203 94.4

0.9

14 3373

14 2005

2.5 DA

50.5

3201 100

16.0 DA

3201

VERIFICARE LA STABILITATE s Npop

l lf / I mdi=(dpc*k+qz1c*k1)/(dpc+qz1c)

j

i = 3100/l

^2 Ric=mui*mdi*Ri/gI [daN/cm2]

Hp [m] Cr > N pop

coef.partial siguranta Incarcare critica Cr = Ric*A*j*mTi

N pop = 2*Rp+gpp [daN] Ri daN/cm2 rasinoase-clasa II Ip= b*h^3/12

A= b*h [cm^2] k

Raza de giratie I 2=Ip/A [cm] k1

Lung.flamb. 2*Hp [cm] g I

Reactiune caprior [daN] CONF. NP 019-97 ; NP 005-96

gcalc.pana [daN/m] mui coef.cond.lucru

fzp=(5/384)*(gzn*Lpc^4)/(E*Iefp)

DIMENSIONARE POPI CARACTERISTICI LEMN DATE PENTRU CALCUL POPI

I efp [cm^4] f adm. L/200 [cm] K1df

W ef p [cm^3] Mr > MI K2df

E [daN/cm^2] fmax MI K2df

E [daN/cm^2] fmax = 0,3 g b

g0 gd - 0,2*(q normat / ce*gz) >= 0,3 g d

TOTAL INCARCARI (daN/m) Rc=pcal*Lc/2 [daN] g1 gf

mTi - Coeficient de tratareDIMENSIUNI CAPRIORI

INCARCARI DIN ZAPADA (daN/m) mdi=(qc*k+qz1c*k1)/(qc+qz1c)

dc*qz1c*cosa2 Ric=mui*mdi*Ri/gI [daN/cm2]

INCARCARI PERMANENTE (daN/m) k

permanente+zapada MI=pcal*Lc^2/8 [daNm] 0.2

dp - distanta dintre pane [m] Ri daN/cm2 rasinoase-clasa II

g1 gc

(dc*qc*cosa) k1 0

gF ga - 0,4*(q normat / ce*gz) >= 0,3 g a

Lc - lungime caprior [m] g I coef.partial siguranta g0 gc - 0,2*(q normat / ce*gz) >= 0,3 g c

DIMENSIONARE CAPRIORI CARACTERISTICI LEMN

CONF. NP 019-97 ; NP 005-96 STARI LIMITA ULTIME (Tab. 4)

cz2

g F=g a - 0,4*(q n / ce*gz)

TOTAL INCARCARI DIN ZAPADA 0,3*ga

dc - distanta dintre capriori [m] mui coef.cond.lucru

unghi caprior-orizontala 1,0 - conditii deosebite de adapostirecz1 1,1 - obstacole in calea spulberarii zapezii

ce - COEFICIENTUL CONDITIILOR DE EXPUNERE

SLEND (Grup Speciala) 0,8 - conditii normale

0,6 - conditii deosebite

COEFICIENTI PARTIALI DE SIGURANTA (Tab. 5)

BREVIAR DE CALCUL ARPANTADIMENSIONARE ELEMENTE STRUCTURALE SARPANTA LEMN DATE DIN STAS 10101/21-92

CONFORM NP 019-97;NP 005-96; STAS 10101/21-92 INCARCARI DATE DE ZAPADA

B=120daN/mp - Buzau; Piatra Neamt

C=150daN/mp - Botosani; Bucuresti;Cotnari;Harlau;Iasi;Targu-Neamt;Bacau

D=180daN/mp - Dorohoi;Radauti;Roman;Suceava

E=185daN/mp - Vatra Dornei

ZONA DE CALCUL

INCARCARI CONFORM STAS 10101/1-78 INCARCARI DIN ZAPADA STAS 10101/21-92 A= 90daN/mp - Cluj-Napoca

calcule rezistenta sarpanta

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