1. .
1.
.. 6, 400´400 .
:
2.
=6,1×6=36,6 2
:
N=g×A=6,234×36,6=228,1644 kH
:
N=g×A=7,6386×36,6=279,5727 kH
:
1 :
19.
:
:
20.
:
:
:
N=g×lk=5,21×5,56=28,968 kH
N=0,4×0,4×3,0×25×1,1=13,2 kH
:
N=N+(n-1)×N+n×N+n×N,
n
N=228,1644+(6-1)×279,5727+6×28,968+6×13,2=1879,03
- :
N=N+(n-1)× N×+n×N+n×N
N=5,254×36,6+(6-1)×5,6106×36,6+6×28,968+6×13,2=1472,04 kH
N= N×+(n-1)× N×
N=0,98×36,6+(6-1)×2,028×36,6=406,99 kH
: N= N+ N=1472,04+406,99=1879,03
2. :
20
-
:
- gb2 [2] . 15:
Rb=11,5 [2] .13;
Rb=gb2× Rb=0,9×11,5=10,35 ;
Rb=10,35 /2
- :
, 10 - 40
Rs=365 [2] .22
Rsc=365 [2] .22
Rs=365 H/2 Rs=365 H/2
3. :
l0=m×H=0,7×(3,0+0,5)=2,45,
m ,
0,5 1 .
.
0
:
1/600×= =5;
1/30×h= =13,3;
e ³10
h .
, e=13,3
e=e=13,3
:
l= , h
|
|
h , , :
,
N
Ncr
Ncr=
;
- :
b=24×103 [2] .18; b=24×103
- :
Es=20×104 M [2] .29
- :
l=6,125
- :
=b×h=0,4×0,4=0,162
- :
a=
- :
m=0,01
- , =¢=40
¢
.
:
h0=h-a=400-40=360
:
;
jn
jn , :
jn= ,
d
d= d min
d min=0,5-0,01× -0,01Rb
d min=0,5-0,01×6,125-0,01×13,05=0,308
d= =0,033
d=0,033 < d min=0,308, , d=0,308
jn= =0,3696
, jl
jl=1+b× ,
b=1, ;
jl=1+1× =1,7834
Ncr:
Ncr= =19488,83 kH
h:
h= =1,10 < 2,5
:
eo×h=13,3×1,10=14,63
0,3×ho=0,3×360=108
eo×h=14,763 < 0,3×ho=108, II .
.21
:
e=eo×h+0,5×h-a
e=e¢=14,63+0,5×400-40=174,63
:
,
amr=0,430 ( ).
2Æ25 -, s=9822
4Æ25 -, s=19642
:
m= , , .
4. .
1) N×e £ x×b×Rb×(ho-0,5×x)+A¢s×Rsc(ho-a¢);
2) N £ x×b×Rb+A¢s×Rsc-As×ss,
ss= ;
x= ;
1-x=1- = ;
xR=0,627;
1-xR=1-0,627=0,373;
2 ss :
1879030=×400×10,35+982×365-982×(1561,105-5,35×)
1879030=4140×+358430-1533005,11+5253,7×
9393,7×=3053605,11
=325,06
1:
N×e=1879030×174,63=328135008,9 ×
N×e=328,1 kH×
x×b×Rb×(ho-0,5×x)+A¢s×Rsc(ho-a¢)=325,06×400×10,35×(360-0,5×325,06)+
+982×365×(360-40)=380442536,5 ×
|
|
N×e=328,1 kH× < x×b×Rb×(ho-0,5×x)+A¢s×Rsc(ho-a¢)=380,4 ×
, .
.
21
=3000+500+1,5×400+570=4670
.
:
Æ ³ 5
Æ ³ 0,25d
0,25d=0,25×25=6,25 > 5
Æ8I
S £ 15d;
S=15d=15×25=375
S=350
Q :
. 23 Q .
1 :
g=g×l1+g, g g .
g=7,63×6,1+5,21=51,753 kH/
Q :
Q= kH
:
=1,25××Q= ×;
=14,92 kH×
=20
ho=h-a=150-20=130;
-;
:
Rs=365 [2] . 22
(, 10 - 40)
Rs=365 /2;
:
2
2Æ16 -, s=4022
:
2Æ16 -, s=4022.