09 - Mali Ekscentricitet_ Konstrukcija Dijagrama Interakcije

7/25/2019 09 - Mali Ekscentricitet_ Konstrukcija Dijagrama Interakcije

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1Mogua stanja di lataci ja preseka

a a' d c e

g

f

h

ZATEZANJE

b

PRITISAK

37d

47d

C

b2a2

a1b1

2 3.5

3.523 v 0

b

h-a2

a1

d

Aa2

Aa1

u,i

a2

10


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2

Mali ekscen tric itet - si la prit is ka

d

b

h-a

a

a

47d

37d

2

C

d2

d2

b1

b2

0 2 3.5

x

d

x-d

h-ayd

a

d2

a

d2-yd

NEUTRALNA

LINIJA

Da2u

b=2

Nu

Mu

Aa1

Aa2

Gb

b=fB

b=fB

a1

a2

Da1u

Dbu

5.32;3

4142b

2b1b

=


3/22

3

5.32;3

4142b

2b1b

=

Bdbu fdbD =

1891664125 22b2b

d+

=

dky dd =

( )2

2b2b

22b

d 1664125

2

7

40k

+

=

Mali ekscen tric itet - si la prit is ka


4/22

4

Aa2=0

Aa2=225

Nu

Mu

MALI EKS.

(PRITISAK)

MALI EKS.

(ZATEZANJE)

VELIK I EKSCENTRICITET


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6

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Nu2040

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500Mu

fb

25.5 508

23.0 475

20.5 442

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Nu2040

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fb

25.5 681

23.0 648

20.5 615

MB40MB35

MB30

MB40MB35

MB30

Mu

UTICAJ KVALITETA BETONA

b. simetricno armiran preseka. jednostruko armiran presek

Nos ivos t preseka u zavis no st i od pojedinih parametara


7/22

7

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4 .5 6 26

6 .0 6 15

7 .5 6 04

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a1

4 .5 4 53

6 .0 4 42

7 .5 4 31

Mu Mu

a1

a/d=0.125

a/d=0.100

a/d=0.075

a/d=0.100

a/d=0.075

a/d=0.125

UTICAJ POLOAJA ARMATURE

b. simetricno armiran preseka. jednostruko armiran presek



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8

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Mu

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Mu

Aa1=60

Aa1=50

Aa1=40

Aa1=30

Aa1=20

Aa1=10Aa1=0

Aa2=10

Aa2=0

Aa2=20

Aa2=30

b=30cmd=60cm

Aa1=30cm2a1=6cm

MB30, GA 240/360

b=30cm

MB30, GA 240/360

Aa2=0a1=6cm

d=60cm

UTICAJ KOLICINE ZATEGNUTE ARMATURE UTICAJ KOLICINE PRITISNUTE ARMATURE



9/22

9

b=30cm

MB30, GA 240/360

Aa1=30cm2,Aa2=0a1=6cm

d=60cm

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510

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840Mu

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540

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690

720

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870

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930

960Mu

B=90cm dp/d=0.10

dp/d=0.15

dp/d=0.20

dp/d=0.25

B/b=4

B/b=3

B/b=2

B/b=1

B/b=0.5

Aa1=30cm2,Aa2=0

d=60cm

a1=6cm

b=30cm

MB30, GA 240/360

dp=12cm

UTICAJ IRINE B UTICAJ DEBLJINE PLOCE dp



10/22

10

01.6

0.1 0.2 0.3 0.4

0

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.4

0.2

0.6

0.8

.0

1.2

1.4

0.6

0.7

0.1

0.2

0.3

0.5

0.4

0.5 0.6 0.8 0.7-1.6

-1.4

-1.2

-1.0

-0.8

-0.6

-0.4

-0.2

0.4

0.2

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

2.60.1 0.2 0.3 0.4 0.5 0.6

1.6

1.8

2.0

2.2

0.80.7

2.4

2.6

MALI EKSCENTRICITETSILA PRITISKA

SILA ZATEZANJAMALI EKSC.

LINEARNA INTERPOLACIJAKOEFICIJENATA SIGURNOSTI

LINIJA "b"

LINIJA "c"

LINIJA "d"

LINIJA "e"

LINIJA "f"

LINIJA "g"

LINIJA "h"

b2/b1= 2/2

3.5/-3

3.5/-2

3.5/v

dfBNu

bd2Mu

b2/b1= 3.5/0

b2/a1= 3.5/0

b2/a1= 3.5/-1

1=0

1=0.8

b2/a1= 3.5/-10

b2/a1= 0/-10

a2/a1= -10/-10

RA 400/500 ; Aa2=Aa1;a/d=0.10; sve MB

(dij agr am 2.4.10, st r.135 PBAB-2)


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11


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12

a a' d c e

g

f

h

ZATEZANJE

b

PRITISAK

C

b2a2

a1b1

2 3.5

3.523 v 010

a

b

c


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13

d e

g

f

h

ZATEZANJE PRITISAK

C

b2a2

a1b1

2 3.5

3.523 v 0

d

f

h


14/22

14

0

-1.6

0.1

0.2

0.3

0.4

0-1.4

-1.2

-1.0

-0.8

-0.6

-0.4

-0.2

0.4

0.2

0.6

0.8

1.0 1.

21.4

0.6

0.7

0.1

0.2

0.3

0.5

0.4

0.5

0.6

0.8

0

.7

-1.6

-1.4

-1.2

-1.0

-0.8

-0.6

-0.4

-0.2

0.4

0.2

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

2.6

0.1

0.2

0.3

0.4

0.5

0.6

1.6

1.8

2.0

2.2

0.8

0

.7

2.4

2.6

MALIEKSCENTRICITET

SILAPR

ITISKA

SILAZATEZANJA

MALIEKSC.

LINEARNA

INTERP

OLACIJA

KOEFICIJENATA

SIG

URNOSTI

LINIJA

"a"

LINIJA"b"

LINIJA"c" LIN

IJA"e"

LINIJA"f"

LINIJA"g"

LINIJA

"h"

b2/b1=2

/2

3.5

/-3 3.5

/-2

3.5

/v

bdfBNu

bd2fB

Mu

b2/b1=3.5

/0b2/a

1=3.5

/0

b2/a1=3.5

/-1

1=0

1=0

.8

b2/a1=3.5

/-10

b2/a1=0/-10

a2/a1=-10/-10

LINIJA"d"


15/22

15

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

2.60.1 0.2 0.3 0.4

MALI EKSCENTRICITETSILA PRITISKA

LINIJA "f"

LINIJA "g"

LINIJA "h"b2/b1= 2/2

bdfBNu

b2/b1= 3.5/0

b2/a1= 3.5/0

gh

PRITISAK

37d

47d

C

2 3.5

3.520


16/22

16

0

-0.2

0.4

0.2

0.6

0.8

1.0

1.2

1.4

0.1

0.2

0.5 0.6 0.8 0.7-0.2

0.4

0.2

0.6

0.8

1.0

1.2

1.4

1.6 1.6LINEARNA INTERPOLACIJA

KOEFICIJENATA SIGURNOSTI

LINIJA "e"

LINIJA "f"

3.5/-3

3.5/-2

3.5/v

bdfBNu

bd2fB

Mu

b2/a1= 3.5/0

b2/a1= 3.5/-1

1=0

0 0.1 0.2 0.3 0.4


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Documents

09 - Mali Ekscentricitet_ Konstrukcija Dijagrama Interakcije