section prop 5610

Prepared by:D.A.Childs B.Sc., C.Eng., M.I.C.E.

Internet Version:Not to be used for commercial purposes unless verified by the user as being correct.

http://www.childs-ceng.demon.co.uk

SECTION : Main Girder Sheet No. 1Units : N & mm

508.0 Holes in tension zone Compact Section Check

38.0 Flange Web:

2286.0 BS 5400-3:2000 Clause 9.3.7.2: m = 0.32

9.0 24 63

508.0 24 180 BD 56/10 Clause 9.3.8.2:

38.0

192.0 Web Flange:

Lh comp 102.0 Clause 9.3.7.3.1t(h) 14.0 24 96

Lv comp 102.0t(v) 14.0 Hence Section :

Lh tension 102.0 Non-Compactt(h) 14.0

Lv tension 102.0 Cl. 9.4 Effective Section

t(v) 14.0 105.6

230 6.9

Area

69822

59827

X-X Axis Y-Y Axis

1.181E+3 8.53696E+8 1.181E+3

1.181E+3 7.83544E+8 1.181E+3

1.2798E+3 1.10575E+2 1.55559E+3

1.0822E+3 1.14441E+2 8.06406E+2

7.42704E+10 6.84562E+7

6.48479E+10 5.88148E+7

5.99222E+7

5.06705E+7 13527 kNm

Cl. 9.7.2L 17068.0

8668.0h 0.94 Cl. 9.7.1 Support to compression flange for lw

0.849 c) Intermediate lateral restraints are not fully effective

0.500 17068

2.483

0.000

0.935

58.49Cl. 9.8

11654 kNm

43.7

Annex G.8 (Fig. 11b) BS5400 b > 30 0.0944Annex G.8 (Fig. 11b) BD56 0.048

0.882 (BS5400) ¦ 0.935 (BD56)Cl. 9.9.1.2

8898 kNm (BS5400)9432 kNm (BD56)

Bfc Bf comp

tfo tfo comp bfo dw hole f bR

Compression angle Lh x Lv x t tw

(34tw/m)*(355/syw)0.5 = 1188 < dwe (2082) : Non-Compact

dw . Bf tension d1/dw = 0.34

tw . tfo tension 28tw(355/syw)0.5 = 313 < d1 (768) : Non-Compact

bfo

Tension angle Lh x Lv x t

dh hole f dh

7tfo(355/syf)0.5 = 330 > bfo(192) : Compact

tfo

bR

Bft

(yc / tw)(syw / 355)0.5 =

sy Web thickness twe =

A gross =

A net =

Zpe

ytgross = Iyygross = ytgross =

ycgross = Iyynet = ycgross =

ytnet = rygross = ytnet =

ycnet = rynet = ycnet =

Ixxgross = Zpe gross =

Ixxnet = Zpe net =

Zxcnet =

Zxtnet = Mpe = Zpe net sy =

lLT = le k4 h u / ry le

k4 = [{4Z2pe(1-Iy/Ix)}/A2h2]1/4 =

i = Ic/(Ic+It) = lw =

lF = (lw/ry)(tf/D) =

yi = 0.8(2i-1) =

u = [{4i(1-i)+0.05lF2+yi

2}0.5+yi]-0.5

lLT =

Mult = Zxtnet sy =

b = lLT[(syc/355)(Mult/Mpe)]0.5 =

h = 0.0035lw/le(b-30) =h = 0.0035(b-30) =

MR/Mult = 0.5[{1+(1+h)5700/b2}-{(1+(1+h)5700/b2)2-22800/b2}0.5] =

At ULS MD = MR / gmgf3 = MR / (1.1*1.05) =

Angle Dimensions:Lh = length of horizontal legLv = length of vertical legt = thickness of leg

S7

Holes in flange assumed to be symmetrical about Y-Y axis. Input holes to one side of Y-Y axis only.

T12

Start with holes nearest tension flange and work towards compression flange.

O31

Section Properties about horizontal axis, i.e. parallel to flange plates.

R31

Section Properties about the vertical axis. Girder is assumed to be symmetrical about the vertical axis at the centre of the web.

U31

Plastic Modulus about X-X Axis

O52

Depth to neutral axis of gross section from outer face of tension flange.

R52

Second moment of area of gross section.

U52

Distance to equal area line of gross section from tension face

O53

Depth to neutral axis of gross section from outer face of compression flange.

R53

Second moment of area of net section.

U53

Distance to equal area line of gross section from compression face

O54

Depth to neutral axis of net section from outer face of tension flange.

R54

Radius of gyration of gross section about Y-Y axis

U54

Distance to equal area line of net section from tension face

O55

Depth to neutral axis of net section from outer face of compression flange.

R55

Radius of gyration of net section about Y-Y axis

U55

Distance to equal area line of net section from compression face

O56

Second moment of area of gross section.

U56

Plastic modulus of gross section.

O57

Second moment of area of net section.

U57

Plastic modulus of net section.

O58

Elastic modulus with respect to extreme compression fibre of net section.

O59

Elastic modulus with respect to extreme tension fibre of net section.

T87

Distance between lateral restraints at support

T88

Effective length shall be determined in accordance with Clause 9.6 making appropriate adjustment (if necessary) for flexiibilty of restraining system if requirements of Clause 9.12.4.1 cannot be met.

T89

A value less than 1.0 may be obtained from Fig. 10(a) or 10(b) if bending moment varies between points of lateral support.

Q96

Slenderness Parameter

section prop 5610

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