CZĘŚĆ 3: Żebro |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
przyjęcie otuliny zbrojenia: |
|
|
|
|
|
|
|
|
hż = |
0,5 |
|
|
|
|
|
|
|
|
|
|
bż = |
0,2 |
|
średnica prętów głównych: |
|
0,024 |
[m] |
|
|
|
|
|
leff = |
6,3 |
|
grubość otuliny: |
|
0,02 |
[m] |
|
|
|
|
|
|
|
|
średnica strzemion: |
|
0,008 |
[m] |
|
|
|
|
|
3.2 Zebranie obciążeń. |
|
|
|
|
|
|
|
|
|
|
|
3.2.1. Obciążenia stałe na 1mb żebra. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Lp. |
Rodzaj obciążenia |
gk |
γf |
go |
|
|
|
1. |
Reakcja od płyty na podporze B od obciążenia stałego: |
|
|
|
|
|
|
|
|
|
|
|
10,025 |
- |
10,025 |
|
|
|
|
1,132 |
2,3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. |
Ciężar własny żebra: |
|
|
|
|
|
|
|
|
|
|
|
|
1,824 |
1,1 |
2,006 |
|
|
|
|
0,12 |
|
0,2
|
0,5
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3. |
Tynk cementowo-wapienny 1,5 cm: |
|
|
|
|
|
|
|
|
|
|
|
|
|
0,2736 |
1,3 |
0,35568 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Suma obciążeń: |
12,123 |
- |
12,387 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.2.2. Obciążenie zmienne na 1mb żebra. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Lp. |
Rodzaj obciążenia |
|
|
|
|
pk |
γf |
po |
|
|
|
1. |
Reakcja od płyty na podporze B od obc. zmiennego: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12,326 |
- |
12,326 |
|
|
|
|
1,218 |
|
4,4 |
|
2,3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Suma obciążeń: |
|
|
12,326 |
- |
12,326 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.3. Przyjęcie schematu statycznego. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Schemat statyczny stanowi belka 3-cio przęsłowa obciązaona obciążeniem stałym i zmiennym. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.4. Obliczenia statyczne. |
|
|
|
|
|
|
|
|
|
|
|
Obliczenia przeprowadzono na podstawie tablic Winklera dla belki |
|
|
|
|
|
|
|
|
|
|
|
3-przesłowej obciążonej obciązeniem stałym g i zmiennym p. |
|
|
|
|
|
|
|
|
|
|
|
3.4.1. Momenty przęsłowe. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) moment zginający w prześle 1- |
M1 |
|
|
|
|
|
|
|
|
|
|
βmin = |
-0,022 |
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
βmax = |
0,101 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
α = |
0,08 |
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mmin= |
28,56901377456 |
kNm |
|
|
|
|
|
|
|
|
|
Mmax= |
88,74372449376 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) moment zginający w prześle 2- |
M2 |
|
|
|
|
|
|
|
|
|
|
βmin = |
-0,05 |
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
βmax = |
0,075 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
α = |
0,025 |
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mmin= |
-12,17002384395 |
kNm |
|
|
|
|
|
|
|
|
|
Mmax= |
48,98313745605 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.4.2. Momenty podporowe. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) moment zginający na podporze B - |
|
|
|
MB |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
βmin = |
-0,117 |
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
α = |
-0,1 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
|
|
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= |
-106,404321681 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.4.3. Momenty odpowiadające. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) moment odpowiadający na podporze B |
|
|
|
odp.MB |
|
|
|
|
|
|
|
|
|
|
|
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
βmin = |
-0,050 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
α = |
-0,1 |
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-73,626 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
3.4.4. Momenty uśrednione. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) moment uśredniony w prz. 1 - |
|
|
uśr.M1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-4,12204991877 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
b) moment uśredniony w prz. 2 - |
|
|
uśr.M2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-42,90 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.4.5. Momenty krawędziowe. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) siła tnąca na podporze A z prawej strony: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
β = |
0,450 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
α = |
0,4 |
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
66,16 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
b) siła tnąca na podporze B z lewej strony: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
β = |
-0,567 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
α = |
-0,6 |
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-90,85405014 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
c) siła tnąca na podporze B z prawej strony: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
g= |
12,387 |
kN/m |
|
|
|
|
|
|
β = |
0,5 |
|
p= |
12,326 |
kN/m |
|
|
|
|
|
|
α = |
0,5 |
|
leff= |
6,3 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
77,84721567 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.4.5.2. Wyznaczenie momentów krawędziowych. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) moment krawędziowy B |
|
|
kr.MB |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
98,619600114 |
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5. Wymiarowanie. |
|
|
|
|
|
|
|
|
|
|
|
3.5.1. Dane materiałowe. |
|
|
|
|
|
|
|
|
|
|
|
3.5.1.1. Beton. |
|
|
|
|
fck= |
20,00 |
Mpa |
|
|
|
|
Parametry wytrzymałościowe betonu klasy |
|
|
|
B 30 |
fctk= |
1,50 |
Mpa |
|
|
|
|
wytrzymałość obliczeniowa na ściskanie: |
|
|
|
|
fcd= |
13,33 |
Mpa = |
13333,33 |
[kN/m2] |
|
|
wytrzymałość obliczeniowa na rozciąganie: |
|
|
|
|
fctd= |
1,00 |
Mpa = |
1000,00 |
[kN/m2] |
|
|
wytrzymałość średnia na rozciąganie: |
|
|
|
|
fctm= |
2,21 |
Mpa = |
2210,42 |
[kN/m2] |
|
|
wytrzymałość średnia na ściskanie: |
|
|
|
|
fcm= |
28,00 |
Mpa = |
28000,00 |
[kN/m2] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.1.2. Stal. |
|
|
|
|
|
|
|
|
|
|
|
Parametry stali klasy: |
|
A-III |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
charakterystyczna granica plastyczności stali: |
|
|
|
|
fyk= |
355 |
Mpa = |
355000,00 |
[kN/m2] |
|
|
obliczeniowa granica plastyczności stali: |
|
|
|
|
fyd= |
310 |
Mpa = |
310000,00 |
[kN/m2] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.2. Wymiarowanie na zginanie. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
hf= |
0,12 |
m |
grubość płyty |
|
|
|
|
|
|
hż= |
0,5 |
m |
wysokosc zebra |
|
|
|
|
|
|
bw= |
0,2 |
m |
szerokosc zebra |
|
|
|
|
|
|
leff= |
6,3 |
m |
długość efektywna żebra |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) Dla przęsła skrajnego: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,5355 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,271 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Aby była zapewniona współpraca żebra z płytą: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= |
0,5355 |
= |
0,72 |
.=> |
warunek spelniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
b) Dla przęseł środkowych: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,441 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,082 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Aby była zapewniona współpraca żebra z płytą: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= |
0,441 |
= |
0,72 |
.=> |
warunek spelniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.2.1. Zbrojenie przęsłowe. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) Przęsło AB |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Parametry przyjętego przekroju: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,271 |
m |
|
0,5 |
m |
|
|
|
|
|
|
0,2 |
m |
|
0,04 |
m |
|
|
|
|
|
|
0,12 |
m |
0,46 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie momentu płytowego: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
813,44 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ZBROJENIE DOŁEM: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
88,74 |
kNm |
|
813,44 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Przekrój pozornie teowy. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0247 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0251 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0251 |
|
0,53 |
.=>dla stali AIII |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6,30223562650709 |
cm2 |
0,000630223562651 |
m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Minimalny przekrój zbrojenia nie może być mniejszy od: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= |
1,49 |
cm2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= |
1,20 |
cm2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stąd: |
1,49 |
cm2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6,30 |
cm2 |
|
1,49 |
cm2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunek spełniony. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
b) Przęsło BB |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Parametry przyjętego przekroju: |
|
|
|
|
|
|
|
|
|
|
|
|
1,082 |
m |
|
0,5 |
m |
|
|
|
|
|
|
0,2 |
m |
|
m |
|
|
|
|
|
|
0,12 |
m |
|
0,46 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie momentu płytowego: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
692,48 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ZBROJENIE DOŁEM: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
48,983 |
kNm |
692,48 |
|
|
|
|
|
|
|
|
|
Przekrój pozornie teowy. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0160 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0162 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0162 |
|
0,53 |
.=>dla stali AIII |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,000346301281745 |
m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3,46 |
cm2 |
1,49 |
cm2 |
|
|
|
|
|
|
|
|
|
Warunek minimalnego pola zbrojenia jest spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.2.2. Zbrojenie podporowe. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) Podpora B |
|
|
|
|
|
|
|
|
|
|
|
MOMENT KRAWĘDZIOWY: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
98,619600114 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0323 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0328 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,03 |
|
0,53 |
.=>dla stali AIII |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0007 |
m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7,03 |
cm2 |
1,49 |
cm2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunek minimalnego pola zbrojenia jest spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MOMENT PODPOROWY: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
106,40 |
kNm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,49 |
m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,16 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,18 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,18 |
0,53 |
.=>dla stali AIII |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,000764643814538 |
m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Minimalny przekrój zbrojenia nie może być mniejszy od: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= |
0,000159731303738 |
m2 |
|
|
|
|
|
|
|
|
|
|
|
|
1,60 |
cm2 |
|
|
|
|
|
|
= |
0,000128266666667 |
m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7,65 |
cm2 |
1,60 |
cm2 |
|
|
|
|
|
|
|
|
Warunek minimalnego pola zbrojenia jest spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ZESTAWIENIE ZBROJENIA OBLICZONEGO |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
M[kNm] |
beff[m] |
d[m] |
μeff |
ξeff |
As1 [cm2] |
ρL [%] |
ilość teor |
ilosc prak |
As1 [cm2] |
ρL [%] |
AB |
88,744 |
1,271 |
0,460 |
0,025 |
0,025 |
6,302 |
0,685 |
1,394 |
3 |
13,56 |
1,47 |
BB |
48,983 |
1,082 |
0,460 |
0,016 |
0,016 |
3,463 |
0,376 |
0,766 |
2 |
9,04 |
0,98 |
B |
106,404321681 |
0,200 |
0,493 |
0,164 |
0,180 |
7,646 |
0,775 |
1,691 |
3 |
13,56 |
1,37 |
kraw. B |
98,620 |
0,200 |
0,493 |
0,152 |
0,166 |
7,031 |
0,713 |
1,555 |
3 |
13,56 |
1,37 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fi24= |
4,5216 |
[cm2] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.3. Wymiarowanie na ścinanie. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie sił tnących występujących z prawej i lewej strony w odległości d= |
|
|
|
|
|
|
0,460
|
od krawędzi podpory. |
|
|
|
Szerokość podpory równa jest szerokości podciągu: |
|
|
|
|
0,45 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
49,23 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-73,93 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
60,92 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.3.1 Zestwienie sił tnących: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wynaczenie maksymalnego rozstawu strzemion: |
|
|
|
|
|
|
|
|
A |
B |
|
|
|
|
|
|
|
|
|
min QL |
- |
-73,93 |
|
|
|
|
|
|
|
|
|
max QP |
49,23 |
60,92 |
|
|
|
0,3 |
|
|
|
|
|
min QLd |
- |
-73,93 |
|
|
|
|
|
|
|
|
|
max QPd |
49,23 |
60,92 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wstępnie przyjęto strzemiona 2-cięte ze stali |
|
|
|
A-I (St3S-b) |
o średnicy: |
8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Parametry stali klasy: |
|
A-I (St3S-b) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
charakterystyczna granica plastyczności stali: |
|
|
|
240 |
= |
240000 |
kN/m2 |
|
|
|
|
obliczeniowa granica plastyczności stali: |
|
|
|
210 |
= |
210000 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
8 |
1,005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) Podpora A |
|
|
|
|
|
|
|
|
|
|
|
STRONA PRAWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
49,23 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9,043 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0098 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,540 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
27,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
49,23 |
|
27,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Występuje odcinek ścinania drugiego rodzaju |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Długość odcinka drugiego rodzaju licząc od osi podpory wynosi: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,87
|
|
20,00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,552 |
|
0,414 |
|
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1523,52 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
49,23 |
< |
1523,52 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunek spełniony |
|
|
|
|
|
Wyznaczenie rozstawu strzemion: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
17,74
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Przyjęto: |
17,0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
b) Podpora B |
|
|
|
|
|
|
|
|
|
|
|
STRONA LEWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
73,925 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0098 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,540 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
27,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
73,925 |
> |
27,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Występuje odcinek ścinania drugiego rodzaju |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Długość odcinka drugiego rodzaju licząc od osi podpory wynosi: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,870 |
|
|
20,00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,552 |
|
0,414 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
304,704 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
73,925 |
< |
304,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie rozstawu strzemion: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
11,82 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Przyjęto: |
11,0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
STRONA PRAWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
60,919 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0098 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,540 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
27,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
60,919 |
> |
27,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Występuje odcinek ścinania drugiego rodzaju |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Długość odcinka drugiego rodzaju licząc od osi podpory wynosi: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,34
|
|
20,00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,552 |
|
0,414
|
|
1,0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
304,704 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
60,919 |
< |
304,70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie rozstawu strzemion: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14,34
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Przyjęto: |
14,0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5.4 Zbrojenie podłużne |
|
|
|
|
|
|
|
|
|
|
|
obliczeniowa sila rozciągająca w zbrojeniu podłużnym w przekroju sprawdzanym na ścinanie |
|
|
|
|
moment Msd jest oddalony o d od krawędzi podpory |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
warunek |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
a) Podpora A |
|
|
|
|
|
|
|
|
|
|
|
STRONA PRAWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
As1* fyd = |
420,5088 |
|
|
|
|
|
|
|
|
|
|
|
Vsd = |
49,23 |
kN |
|
|
|
|
|
|
|
|
|
ΔFtd = |
24,62 |
kN |
|
|
|
|
|
|
|
|
|
Msd = |
55,23 |
kNm |
|
|
|
|
|
|
|
|
|
Ftd = |
158,022 |
kN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Ftd = |
158,022 |
< As1* fyd = |
420,509 |
.=>warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
b) Podpora B |
|
|
|
|
|
|
|
|
|
|
|
STRONA LEWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
As1* fyd = |
420,5088 |
|
|
|
|
|
|
|
|
|
|
|
Vsd = |
73,93 |
kN |
|
|
|
|
|
|
|
|
|
ΔFtd = |
36,96 |
kN |
|
|
|
|
|
|
|
|
|
Msd = |
89,11 |
kNm |
|
|
|
|
|
|
|
|
|
Ftd = |
252,204 |
kN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Ftd = |
252,204 |
< As1* fyd = |
420,509 |
.=>warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
STRONA PRAWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
As1* fyd = |
420,5088 |
|
|
|
|
|
|
|
|
|
|
|
Vsd = |
60,92 |
kN |
|
|
|
|
|
|
|
|
|
ΔFtd = |
30,46 |
kN |
|
|
|
|
|
|
|
|
|
Msd = |
100 |
kNm |
|
|
|
|
|
|
|
|
|
Ftd = |
272,005 |
kN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Ftd = |
272,005 |
< As1* fyd = |
420,509 |
.=>warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6 Stan grniczny użytkowania |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.1 Sprawdzenie ugięcia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.1.1 Wyznaczenie obciążeń: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
obciążenia charaktrystyczne: |
|
|
gk = |
12,123 |
kN/m |
|
|
|
|
|
|
|
|
|
pk = |
12,326 |
kN/m |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
obciążenia długotrwałe: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
dla hali Ψ= |
0,8 |
|
|
|
|
|
|
|
|
|
|
pklt = |
9,861 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.1.2 Sprawdzenie ugięcia w przęśle AB: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie momentow: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
αij |
gk |
βij |
pklt |
leff |
M |
|
|
|
|
|
MAB |
0,080 |
12,123 |
0,101 |
9,861 |
6,3 |
78,022 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sprawdzenie warunku na naprężenia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
As1 = |
13,565 |
cm2 |
|
|
|
|
|
|
|
|
|
ρl = |
1,474 |
% |
|
|
|
|
|
|
|
|
|
d = |
0,460 |
m |
|
|
|
|
|
|
|
|
|
ζ = |
0,8 |
załącznika D z normy zelbetowej |
|
|
|
|
|
|
|
|
|
fyk = |
355000,00 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
156298,071855096 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fyk = |
355000 |
≥ |
156298,071855096 |
.=> warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sprawdzenie smukłości: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13,696 |
< |
44,786 |
warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.1.2 Sprawdzenie ugięcia w przęśle BB: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie momentow: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
αij |
gk |
βij |
pklt |
leff |
M |
|
|
|
|
|
MAB |
0,025 |
12,123 |
0,075 |
9,861 |
6,3 |
41,382 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sprawdzenie warunku na naprężenia: |
|
|
|
|
|
|
|
|
|
|
|
As1 = |
13,565 |
cm2 |
|
|
|
|
|
|
|
|
|
ρl = |
1,375 |
% |
|
|
|
|
|
|
|
|
|
d = |
0,460 |
m |
|
|
|
|
|
|
|
|
|
ζ = |
0,85 |
załącznika D z normy zelbetowej |
|
|
|
|
|
|
|
|
|
fyk = |
355000,00 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
78023,380772293 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fyk = |
355000 |
≥ |
78023,380772293 |
.=> warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sprawdzenie smukłości: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13,696 |
< |
89,717 |
warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.2 Sprawdzenie rys prostopadłych: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
αij |
gk |
βij |
pk |
leff |
M |
|
|
|
|
|
MB |
-0,100 |
12,123 |
-0,117 |
9,861 |
6,3 |
-93,907 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sprawdzenie warunku na naprężenia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
As1 = |
13,565 |
cm2 |
|
|
|
|
|
|
|
|
|
ρl = |
1,375 |
% |
|
|
|
|
|
|
|
|
|
d = |
0,460 |
m |
|
|
|
|
|
|
|
|
|
ζ = |
0,8 |
załącznika D z normy zelbetowej |
|
|
|
|
|
|
|
|
|
fyk = |
355000,00 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
188120,228951035 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fyk = |
355000,00 |
≥ |
188120,228951035 |
.=> warunek spełniony |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.3 Sprawdzenie rys ukośnych: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
wzór na szerokość rys ukośnych |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Es = |
200 |
|
|
|
|
|
|
|
fck = |
20000,00 |
kN/m2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Podpora B |
|
|
|
|
|
|
|
|
|
|
|
|
STRONA LEWA: |
|
|
STRONA PRAWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
803,54 |
662,16 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,005 |
0,0036 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
583,8641 |
|
|
743,0998 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0825 |
|
|
0,0908 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunki rys ukośnych wk<wklim = 0,3 mm zostały spełnione |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Podpora A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
STRONA PRAWA: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
535,13 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0030 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
902,34 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,0874 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warunki rys ukośnych wk<wklim = 0,3 mm zostały spełnione |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.4 Zakotwienie prętów |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Podstawowa długość zakotwienia: |
|
|
|
Minimalna długość zakotwienia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
80,87 |
|
|
24,26 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fbd= |
2,3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Obliczeniowa długość zakotwienia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wspólczynnik efektywności zakotwienia dla prętów prostych: |
|
|
|
|
|
|
|
|
|
|
|
αa = |
1 |
|
|
|
|
|
|
|
|
|
|
|
Wyznaczenie długości zakotwienia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
lbd = |
37,572 |
dla przęsła AB |
|
|
|
|
|
|
|
|
lbd = |
30,968 |
dla przęsła BB |
|
|
|
|
|
|
|
|
lbd = |
45,586 |
dla podpory B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
przyjęto długość lbd = |
46,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.5 Korekta długości zbrojenia: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0,207 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6.6 Połączenie prętów na zakład: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
α1 = |
2 |
|
|
|
|
|
|
|
|
|
|
ls = |
92 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|