steel structures

Pages: 53 (976 words) Published: March 12, 2014
1
HTHT

‫ﺻﻔﺤﻪ‬
:

.
.
.

:



1 .

2

:
......
30
.
70,140,140,70
.
.
:



: 519

:

1

:519

:

2

:

3

519

4
:
519

7

:

1

2
HTHT

‫ﺻﻔﺤﻪ‬
: 519

2 800

8

:

2
3

:
:
:

+
+

+

+

+

(6

)

3

American Standard Testing material (ASTM)

1

F y= 2500kg/cm2

A36

A440,A441,A572
A514
2
Fe 37-A
Fe 37 – B

=3700

Fu

(

)

3

3
HTHT

st


st

st



‫ﺻﻔﺤﻪ‬

37 − 1
37 − 2
37 − 3

st


st

st



2

Fy=2400kg/cm

Fu=3700 kg/cm2

52 − 4
65 − 1
60 − 2

4

BCT .2k ∏ ⇒

Fy = 3200kg / cm 2

CT .0

2

:E
.

1



1



Fu

σ = Eε ⇐

Fy

¾áPsäM ØáaCÐ
α

¾áPsãBØáaCÐ

E

ε

.

E = 2.1 × 10 6 kg / cm 2

4

HTHT

‫ﺻﻔﺤﻪ‬
(

σy

Fy )

2

.

ε

3

20 15
.
4

A36

.

E=6 2000kg/cm

5
1
( ε yσ y )
2



σy

.

.
6



.

5

HTHT

‫ﺻﻔﺤﻪ‬

:

σ 3 ,σ 2 ,σ 1 ,

σ 2y =

[

1
(σ1 − σ 2 )2 + (σ 2 − σ 3 )2 + (σ 3 − σ1 )2
2

]

.
2
σ 2 y = σ 12 + σ 2 − σ 1σ 2 :

Τ=

.

σ1
3

.

σ1 = σ 2
σy

.

3

I

1


d
 → bf ≈
2


IPE

INP

IPE

120 ⇒ d = 120 mm

IPB

d

Web

140 ⇒ d = 140 mm

:
.
.

1
2
3

Ix>Iy

x

.

IPB

6

HTHT

‫ﺻﻔﺤﻪ‬
2

ζ

10

100

10

120

η

100

x

100

η

.
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Essay about Continuous Improvement on Tata Steel
  • Reinforcing Steel Essay
  • compare between concrete and steel Essay
  • Management and Steel Industry Essay
  • How Steel Changed America Essay
  • Pestle Analysis of TATA Steel Essay
  • How a Steel Mill Works Essay
  • Steel Manufacture Supply Chain Essay

Become a StudyMode Member

Sign Up - It's Free