wyk. Jakub H. Wojtaszczyk |
© |
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1.9. |
Zestawienie oddziaływań wewnętrznych |
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2.1. |
Zbrojenie ław na zginanie |
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AsM |
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Przyjęto: |
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a= |
0.065 |
m |
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LP |
Ławy |
Rozciąganie |
Zginanie |
Mimośrodowe rozciąganie |
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b1= |
0.4 |
m |
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fundamentowe |
N [kN] |
M [kNm] |
N' [kN] |
M' [kNm] |
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b2= |
0.6 |
m |
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1. |
A |
312 |
47.1 |
156 |
23.55 |
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2. |
B |
534 |
0 |
267 |
0 |
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d = b - a |
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0.335 |
m |
0.112225 |
m |
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3. |
C |
312 |
47.1 |
156 |
23.6 |
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0.535 |
m |
0.286225 |
m |
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4. |
D |
162.7 |
67.9 |
81.4 |
34.0 |
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5. |
E |
274 |
75.4 |
137 |
37.7 |
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H= |
0.4 |
m |
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6. |
F |
257 |
64.8 |
128.5 |
32.4 |
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7. |
G |
176.1 |
62.8 |
88.1 |
31.4 |
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8. |
H |
147.9 |
67.9 |
74.0 |
34.0 |
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Projektowanie zbrojenia: |
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2. |
Wymiarowanie zbrojenia |
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stal A400C |
fyd= |
348 |
[MPa] |
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beton C20/25 |
fcd= |
14.29 |
[MPa] |
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Zbrojenie na rozciąganie: |
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AsR [cm2] = |
N/fyd |
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Przyjęto pręty ϕ16mm |
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A1 [cm2] = |
2.01 |
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LP |
Ławy |
Min. zbrojenie |
Potrzebna liczba prętów |
Przyjęta liczba prętów |
Przyjęte zbrojenie |
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LP |
Ławy |
sc |
ξ |
ζ |
Min. zbrojenie |
Potrzebna liczba prętów |
Przyjęta liczba prętów |
Przyjęte zbrojenie |
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fundamentowe |
AsR [cm2] |
AsRr [cm2] |
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[-] |
[-] |
[-] |
AsM [cm2] |
AsMr [cm2] |
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1. |
A |
8.97 |
4.5 |
5 |
10.05 |
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1. |
A |
0.073 |
0.076337913059451 |
0.961831043470274 |
4.2026 |
2.09 |
3 |
6.03 |
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2. |
B |
15.35 |
7.6 |
8 |
16.08 |
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2. |
B |
0 |
0 |
0 |
0.0000 |
0.00 |
0 |
0 |
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3. |
C |
8.97 |
4.5 |
5 |
10.05 |
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3. |
C |
0.073 |
0.076337913059451 |
0.961831043470274 |
4.2026 |
2.09 |
3 |
6.03 |
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4. |
D |
4.68 |
2.3 |
3 |
6.03 |
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4. |
D |
0.106 |
0.112136595823573 |
0.943931702088214 |
6.1734 |
3.07 |
4 |
8.04 |
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5. |
E |
7.88 |
3.9 |
4 |
8.04 |
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5. |
E |
0.046 |
0.04720019961925 |
0.976399900190375 |
6.6273 |
3.30 |
4 |
8.04 |
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6. |
F |
7.39 |
3.7 |
4 |
8.04 |
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6. |
F |
0.040 |
0.040424363090554 |
0.979787818454723 |
5.6759 |
2.82 |
3 |
6.03 |
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7. |
G |
5.06 |
2.5 |
3 |
6.03 |
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7. |
G |
0.098 |
0.10322678388839 |
0.948386608055805 |
5.6829 |
2.83 |
3 |
6.03 |
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8. |
H |
4.25 |
2.1 |
3 |
6.03 |
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8. |
H |
0.106 |
0.112136595823573 |
0.943931702088214 |
6.1734 |
3.07 |
4 |
8.04 |
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2.2. |
Zbrojenie na mimośrodowe rozciąganie AsMR (zbrojenie symetryczne) |
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Mimośród statyczny |
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es=M'/N' |
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Odległość od środka do zbrojenia |
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e0=(d-a)/2 |
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Mały mimośród występuje, gdy es<e0 |
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LP |
Ławy |
Mimośród statyczny |
Odl. od śr. do zbroj. |
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fundamentowe |
es [m] |
e0 [m] |
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1. |
A |
0.151 |
0.135 |
duży mimośród |
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2. |
B |
0.000 |
0.135 |
- |
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3. |
C |
0.151 |
0.135 |
duży mimośród |
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4. |
D |
0.417 |
0.135 |
duży mimośród |
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5. |
E |
0.275 |
0.235 |
duży mimośród |
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6. |
F |
0.252 |
0.235 |
duży mimośród |
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7. |
G |
0.357 |
0.135 |
duży mimośród |
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8. |
H |
0.459 |
0.135 |
duży mimośród |
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2.2.1. |
Przypadek dużego mimośrodu (dla ław A, C, D, E, F, G, H) |
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2·a= |
0.13 |
m |
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xeff<2·a |
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LP |
Ławy fundamentowe |
Min. zbrojenie |
Potrzebna liczba prętów |
Przyjęta liczba prętów |
Przyjęte zbrojenie |
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As1MR [cm2] |
As1MRr [cm2] |
xeff |
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1. |
A |
0.000027 |
0.00001 |
1 |
2.01 |
0.0273 |
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2. |
B |
- |
- |
- |
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0.0467 |
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3. |
C |
0.000027 |
0.00001 |
1 |
2.01 |
0.0273 |
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4. |
D |
0.000245 |
0.00012 |
1 |
2.01 |
0.0142 |
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5. |
E |
0.000059 |
0.00003 |
1 |
2.01 |
0.0240 |
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6. |
F |
0.000023 |
0.00001 |
1 |
2.01 |
0.0225 |
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7. |
G |
0.000208 |
0.00010 |
1 |
2.01 |
0.0154 |
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8. |
H |
0.000255 |
0.00013 |
1 |
2.01 |
0.0129 |
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2.3. |
Zestawienie zbrojenia |
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Przyjęto pręty zbrojenia ϕ16mm |
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LP |
Ławy |
Rozciąganie |
Zginanie |
Mimośrodowe rozciąganie |
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1. |
A |
5 |
3 |
1 |
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2. |
B |
8 |
0 |
- |
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3. |
C |
5 |
3 |
1 |
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4. |
D |
3 |
4 |
1 |
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5. |
E |
4 |
4 |
1 |
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6. |
F |
4 |
3 |
1 |
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7. |
G |
3 |
3 |
1 |
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8. |
H |
3 |
4 |
1 |
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