Bản tính dầm super tee; bản mặt cầu theo tiêu chuẩn 22TCN27205




 !"#$!%&'()*(+),- ./0
1

 
*1!2$$234 &5 6786 4
)9:;3!234;<
4 5 =86> 4
)?!;@A9 &

5&+B 6-8C 4
<D<  &+E6
 6)
FGH/" I
0
5 C87 4
&1; I
B
5 08E 4
& I
6
5 =8> 4
(J9 I
,
5 =8B 4
KL1@3! I5I
0
MB8I
B

MB8I
6
MB8I
,
I5 0B 4
(D<N!O *3!234
(4GP !/
Q!D<N! I*2RSQR
*< *T'
*NL (34U VW
0
5 >= F
I4G3! VW
B
5 6B F
XL
γ

5
B,>= DY4
6
&   Z ([&   Z
-
\]HP;DA (
\
5 0>8B 44
*;@O!DZ!!? V
!
5 07C= F
ZC= V

!
5 CB= F
V
"
5 ,B= F
^!"_<D< BB*B-B+=>
 !"#$!%&'()*(+),- ./B
2

 
  !
Q]234U
0B 0B
C ,87
B8> B B B8>
 
  
 
≤ ≤ ⇔ ≤ ≤ ⇔ ≤ ≤
5>234
)9`234U5B6==44
&1;;4S'4G3!3H/"a$;]T9'!
LbJ9
IA2349OA3! B4GP
Q]234 

5c
L
+0d8B 


5 7 234
.39e 
D
5cI+c
L
+0d+=80>fBdYB 
D
5 08B> 4
*1!2$"!L_UL 
V
5 07 4
&'IQ 
0
5 -= 44
&'g' 
B
5 , 44
 "##$ %
PDN  &
D
5 7== 44
234;G &
2
5 0B== 44
*1!234U
6786
=8=,> =8=,> 6786 08-B B806
07 07

      ≤ ≤ ⇔ ≤ ≤ ⇔ ≤ ≤

*508->450->=44
 !
*1!234!/ W5 7== 44
I1@L3!2342' LW
0
5 7E= 44
 !"#$!%&'()*(+),- ./6
3

*1!9234 
0
5 -> 44
*1!h 
B
5 -> 44
I1@h L
7
5 0== 44
I1@9234 L
B
5 0BB= 44
"
*1!234!/ 5 0->= 44
I1@L3!2342' L
0
5 -== 44
*1!9234 
0
5 -> 44
*1!h 

B
5 -> 44
I1@h L
7
5 0== 44
I1@9234 L
B
5 BBC= 44
 !"#$!%&'()*(+),- ./,
4

#$!!%&'(
*1!234!/ 5 0->= 44
I1@L3!2342' L
0
5 -== 44
L
,
5 7B8> 44
L
>
5 B0> 44
*1!L3!2' 
C
5 BB> 44
*1!h2' 
>
5 >= 44

,

5 6== 44
*1!\ 
6
5 0=B> 44
1!h 
B
5 -> 44
1!9234 
0
5 -> 44
L1@h L
7
5 0== 44
I1@L9 L
C
5 -B= 44
L
-
5 7B= 44
L
B
5 BBC= 44
*1!$234 5M
V
50E6= 44
 !"#$!%&'()*(+),- ./>
5




5 >= 44

L
5 B> 44
& '(!)*$ 
*1!234  
2
5W5 7== 44
I12$"234 
2
5&
D
5 7== 44
*1!2$234  W
2
5 0=7= 44
i
2
5 0,0= 44
I1@h 
2
5 0== 44
*h 
2
5 -> 44
(A4GP234 j
2
=8CB-7 4B
 !"#$!%&'()*(+),- ./C
6


 !"#$!%&'()*(+),- ./-
7
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0 +=8C0 = =8C0 = = = = =
B +=8C0 +=8=-> = +=8=-> = = = =
6 +=8>0 +=80> +=80 +=8BB> =8=00B> =8=BB> +=8==6E =8===C6
, +=8,,> +=87 +=8=C> +=8E> =80B =8=C0-> +=8=>=E =8=,=E0
> =8,,> +=87 +=87E +08C =8C, 08,B, +08-=77 087BB-B
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C =8>0 +=80> +=8=C> +=8E> =80B =8=C0-> +=8=>=E =8=,=E0
- =8C0 +=8=-> +=80 +=8BB> =8=00B> =8=BB> +=8==6E =8===C6
7 =8C0 = = +=8=-> = = = =
E = = =8C0 = = = = =

0= = = = = = = = =
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B 0 B
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8 8 =8-EC =87 B86 =807 080B-B
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BE,E7
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0 +0806 = 0806 = = = = =
B +0806 +=8=-> = +=8=-> = = = =
6 +=8C0+=8=-> +=8>B +=80> =8==>C6 =8=-7 +=8==77 =8===77
, +=8>0 +=80> +=80 +=8BB> =8=00B> =8=BB> +=8==6E =8===C6
> +=86> +08-> +=80C +08E =8BCB> =86=, +=8>6>C =8E6-7,
C =86> +08-> +=8- +68> 68=CB> B8,> +C8,606 0>8==C6
- =8>0 +=80> +=80C +08E =8BCB> =86=, +=8>6>C =8E6-7,
7 =8C0+=8=-> +=80 +=8BB> =8=00B> =8=BB> +=8==6E =8===C6
E 0806+=8=-> +=8>B +=80> =8==>C6 =8=-7 +=8==77 =8===77
0= 0806 = = +=8=-> = = = =
00 = = 0806 = = = = =
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r5 08C6= 4B
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10
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B 0 B
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0 = +=8=-> = +=8=-> = = = =

B =8>B +=8=-> +=8>B +=80> =8==>C6 =8=-7 +=8==77 =8===77
6 =8CB +=80> +=80 +=8BB> =8=00B> =8=BB> +=8==6E =8===C6
, =8-7 +08-> +=80C +08E =8BCB> =86=, +=8>6>C =8E6-7,
> 08,7 +08-> +=8- +68> 68=CB> B8,> +C8,606 0>8==C6
C 08C, +=80> +=80C +08E =8BCB> =86=, +=8>6>C =8E6-7,
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7 B8BC +=8=-> +=8>B +=80> =8==>C6 =8=-7 +=8==77 =8===77
E B8BC = = +=8=-> = = = =
0= 08>, = =8-B = = = = =
00 08>, +=8=> = +=8=> = = = =
0B 08>0> +=8=> =8=B> +=80 =8==B> +=8==B> =8===0E +0•+=>
06 08>0> +=86 = +=86> =8=0> = = =
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0> 086,> +08,-> =8=7B> +B8C> 08-6606 +=8B07C =8,6C6- +=8 >
0C 0806 +08>B> =8B0> +6 B8B,E67 +=8C,> 08,>067 +B8E=66
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07 =876B> +080-> =8=7B> +B8C> 08-6606 +=8B07C =8,6C6- +=8 >
0E =8-,> +=86 =8=7-> +08,-> =86>B> +=80BE0 =80>E>B +=807E7
B= =8-,> +=8=> = +=86> =8=0> = = =
B0 =8-B +=8=> =8=B> +=80 =8==B> +=8==B> =8===0E +0•+=>
BB =8-B = = +=8=> = = = =
B6 = = =8-B = = = = =
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17
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C#8D (&EF &G$H!" !IJ!=NGM!%
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18
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19
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20
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21

(34L
F4/ =806 =80=> 080-,
&RP =806 =80=> 080-,
:: 4;.3"D!E@,
\2”

0
:
η
=
'9L@$QD<
\2:
0
;
η
=
'4S2:
\m!
08=>
%
η
=
*3!<D<Q$m!
\;1!ŽU
8 8 08=> =8E>
: ; %
η η η η
= = >
 !"#$!%&'()*(+),- ./BB
22

? TU+V**WXU,Y+, */
F G@"H$I=-$ %
Z[&H!&S
MkZ;234PDN
(A<2

0 B
=
=8-EC

 
=
XL234U
6
B,>= Y

 
γ
=
Q];234
0
= =
8 8 8B B,>= =8-EC =87 B 60B=86B
   
:<      
γ
= = =
MkZ;234;G
(A<2
0 B
0
08C6=

 
=
Q];234

0
0 0
8 8 8B B,>= 08C6= 08B B E>7,8,
   
:<     
γ
= = =
MkZ;234gQ
(A<2
0 B
,
=8C6,6

 =
Q];234
[ ]
( )
0
,
8 8 c d8B B,>= =8C6,6 6786 =87 08B B >66=68,
    
:<        
γ
+
 
= − = − + =
 
Z[&H!IM&\
'234v1!2$67864a2ŠB9;S4€2$"0>4234Q$4
6Da4lD2$0B8C-489T$"v92uT;@K;OD?!

QP2348
9T B
I12$"9T =80>4
(A9T/o23!
0 0 B
0 , -
8 08C6= =8C6,6 =8=> =87B =8E>,-
=   
   1   = − − = − − =
Q]9T
8 8 8 B,>= =8E>,- =80> B -=08-
=  = = =
:<       
γ
= = =
MŽ234UQ$;1!\!1!2$234
= 0
60B=86B E>7,8, >66=68, -=08-
0-,08
6786
   =

:< :< :< :<
:< 

+ + +
+ + +
= = =
Z#[&H!FH9
 !"#$!%&'()*(+),- ./B6

23

M(34`
(A<2
B
8 B86 =807 =8,0,
 
    = = =
XLL4G3!
6
B,>= Y

 
γ
=
Q]L4G3!234`
8 B,>= =8,0, 0=0,86 Y
  
:<    
γ
= = =
M(34L
(A<2
B
B86
8 c 08B>d =807 =8,6B
B B
  

    

 
= + = + =
 ÷
 
Q]L4G3!234`
8 B,>= =8,6B 0=>78, Y
  
:<   
γ
= = × =
ZC[&H!
(A4GP234j
2
5=8CB-74
B
Q]234
c 8 d8
=8CB-7 =87 7
8 B,>= >08,=, Y
8 > 6786
  
 

  
 
:<   
  
γ
= = =
ZZ[&H!IM;&9K=(&](

*1!2$9D!/o
-
=87B
=
  = =
I12$"9D!
=8=>
= 
 1 = =
5=8=>4
Q]9D!042$23!
8 8 B,>= =87B =8=> 0==8,> Y
=  = =
:<      
γ
= = =
Z^[&H!=
>?@#=A
.3ZvQ]
0C Y

:<  =
*1!Q
=86

 =
.3L
6
8 8 =8> =86 B,>= 6C-8> Y
  

:<      
γ
= = =
Q]Qv"O
0C 6C-8> 6768> Y
  
:< :< :<  = + = + =
 !"#$!%&'()*(+),- ./B,
24

fQ]Q2234LO!
B6== 0B>=
08>,6>
• B6==


 
#

+
+
= = =
8 6768> 08>,6> >E08E6 Y
  
:< :< #   = = =
=

# =
8 =
  

:< :< #= =
>?BC9
*1!P
6== =86

  = =
Q]P
8 B,>= =86 =8B 0,- Y
  
:<     
γ
= = =
Z_`&H!=J((&S9Ia!8b&Kcd2ef
f&'U
*1!2$"Q'Lj\Q
0
-= =8=-  = =
XLj\Q
0
BB>= Y 
γ
=
f&''
 !"#$!%&'()*(+),- ./B>
25