-
. . - . 1 / 22
, , , ,
3
-
. . - . 2 / 22
, , , ,
a
1
/
2
.
c
o
s
a
1
/
2
.
c
o
s
a
1
.
c
o
s
D
C
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M 1:100
V1
V1V1V1C1
a1
a1
a1
C1
P1
..
-
. . - . 3 / 22
, , , ,
b
b b b
b b b
3,60b m
3,60 4,50m b m>
4,50b m>
, : , , , .
-
. . - . 4 / 22
, , , ,
1.1.3.3
-
. . - . 5 / 22
, , , ,
1. EC1995-1-11.1
1,35 2
1,35
1,35
:
3
1
-
1.kg a
1. .t a
G
2,dg =2,kg =34,9 / 0,175 0,125I Ic ckN m h m b m = = =
. .1c ch b
-
. . - . 6 / 22
, , , ,
2 01, 1
1, , 1, 1
1, , 1, ,
. . [ / ] 0,8 30. .cos [ / ] 1 1
. 1,5
= = = = == =
k k e t
k k e t
d k Q Q
s s C C kN m as S a kN m C Cs s
1.2
[kNm]
( ) 22, 2, .8
d dd
g s bM
+=( ) 22, 2, .
16d d
d
g s bM
+=( ) 22, 2, .
12d d
d
g s bM
+=
-
. . - . 7 / 22
, , , ,
,
-
. . - . 8 / 22
, , , ,
1.3.
1.3.1
, , , ,
, , , ,, , , ,
, , , , , , , ,
.cos .sin
1 1 0,7
d dm y d m z d
y z
m y d m y dm z d m z dm m m
m y d m z d m y d m z d
M MW W
k k kf f f f
= =
+ + =
, , , ,, , , ,
, , , , , , , ,
1 1 0,7m y d m y dm z d m z dm m mm y d m z d m y d m z d
k k kf f f f + + =
( )22 0,5. .. 2.6 6
C cc cy z
b hb hW W= =
2 2. .6 6c c c c
y zb h b hW W= =
-
. . - . 9 / 22
, , , ,
, ,, , mod , , , mod ,
0,2
,
0,2
,
,
. . . .
150150 min
1,3:
150150 min
1,3:
150 m2
m k m km y d h y m z d h z
M M
c n y c
c
c n z c
c
cn z
f ff k k f k k
h mm k hh mm
b mm k bb mm
b mm k
= = =
=
=0,2
150in / 2
1,3c
c
bb mm
kmod .
-
. . - . 10 / 22
, , , ,
1.3.2
( ) ( )( ) ( )
4 42, 1 2, 2, 1 2,
, ,
4 42, 2 2, 2, 2 2,
, ,
, , ,
.cos .sin. .. .384. 384.
.cos .sin. . . .. .
384. 384.
k k k kz inst y inst
mean y mean z
k k k kdef defz creep y creep
mean y mean z
z z inst z creep y y ins
g s g sn b n bf fE I E I
g s g sn b k n b kf f
E I E If f f f f
+ += =
+ += == + = , 1 2
2 2
3 3
0,5 0,2 0,8
5 ;2 .200
. .12 12
t y creep def
y z
c c c cy z
f k
bf f f n x
b h b hI I
+ = = == + =
= =
:( )30,5. .1 2.
12c c
zb h
n I= =
-
. . - . 11 / 22
, , , ,
1.3.3
-
. . - . 12 / 22
, , , ,
b b b
b b b
M
Q
Qc,d
Qc,d
Qc,d
Qc,d
Qc,d
Qc,d
-
. . - . 13 / 22
, , , ,
( ), 1, , , , , , ,1,
min , , , , , =c dg d a d b d c d d d e d f dd
Qn T R R R R R R
T
2 1 1,5.= t t d
-
. . - . 14 / 22
, , , ,
2. 5
-
. . - . 15 / 22
, , , ,
15% 50% 100% 25% 0% :Fmax/4 - /4
- Johansen
- , , Johansen. - Rc,k; Rd,k; Re,k; Rf,k
-
. . - . 16 / 22
, , , ,
, ,1, 1 1,3= =a k h k MR f t d
, ,2, 2 1,3= =b k h k MR f t d
2 2,1, 1 ax,2 32 2 2 2
,1 1 1 1
2 1 1 1,31 4
= + + + + + + = +
h k Rkc k M
f t d Ft t t tRt t t t
: , , , , , ,, , , ,a k b k c k d k e k f kR R R R R R
( ) ( ) ,,1, 2 ax,2, 2,1, 2
4 1 21,05 2 1 1, 2
1 2 4
+ = + + + =+ y Rkh k Rk
e k Mh k
Mf t d FR
f d t
ax,, , ,1,
21,15 2 1,21 4 = + =+
Rkf k y Rk h k MR
FM f d
( ) ( ) ,,1, 1 ax,, 2,1, 1
4 21,05 2 1 1, 2
2 4
+ = + + + =+ y Rkh k Rk
d k Mh k
Mf t d FR
f d t
-
. . - . 17 / 22
, , , ,
, , 600 N/mm, :
2,6
, 2,6
,2,
,1,
,
0,3 ;
0, 45
/ ;
-
= =
uy Rk
u
h k
h k
ax Rx
f dM
f dff
F .:
My,Rk e [Nmm];
d e [mm]; fu e [N/mm].
-
. . - . 18 / 22
, , , ,
8 mm - LVL:
-
0,3 2, 0,082 /h k kf d N mm = -
2, 0,082(1 0,01 ) /h k kf d N mm=
:
k e kg/m;
d e mm.
-
. . - . 19 / 22
, , , ,
,, mod
,, mod
,, mod
,, mod
,, mod
,, mod
.
.
.
.
.
.
a ka d
M
b kb d
M
c kc d
M
d kd d
M
e ke d
M
f kf d
M
RR k
RR k
RR k
RR k
RR k
RR k
=
=
=
=
=
=
-
. . - . 20 / 22
, , , ,
: (1) (2) (3) (4) 1 - , 2 -
-
. . - . 21 / 22
, , , ,
,
[] ,
k 420 kg/m3 420 kg/m3 < k 500 kg/m3
d < 5 mm:
(5 + 5cos )d
d 5 mm:
a1 ( )
0 360
(5 + 7cos )d
(7 + 8cos )d (4 + cos )d
a2 ( )
0 360 5d 7d (3 + sin )d
a3,t ( )
-90 90 (10 + 5cos )d (15 + 5cos ) d (7 + 5cos ) d
a3,c ( )
90 270 10d 15d 7d
-
. . - . 22 / 22
, , , ,
, ()
[] ,
k 420 kg/m3 420 kg/m3 < k 500 kg/m3
d < 5 mm: d < 5 mm: d< 5 mm:
(5 + 2sin )d (7 + 2sin )d (3 + 2sin )d
d 5 mm: d 5 mm: d 5 mm:
a4,t ( )
0 180
(5 + 5sin )d (7 + 5sin )d (3 + 4sin )d
a4,c ( )
180 360 5d 7d 3d
