PC I Girder Posttensioned HS20 44 SI

PROJECT : LOCATION : STRUCTURE :

GARDEZ - KHOST Bridge No. 5 I - GIRDER 0.600 x 1.450 x 25.700 m.

Ref. no. : Date : December 10,2015 Engineer : Yuttana

Supanyo

1) Material : 1.1) Concrete 1.1.1)

1.1.2)

Precast girder f'c = f'ci = Ec = Eci =

45.00 36.00 31,730 28,380

Topping Slab f'c =

N/mm² (Cylinder compressive Strength at service stage) N/mm² (Cylinder compressive Strength at transfer stage) N/mm² N/mm²

23.60 kN/m³

weight =

30.00 N/mm² (Cylinder compressive Strength at 28 days)

1.2) Steel reinforcement 1.2.1)

Prestressing tendon Prestressing wire conform to ASTM A421 Prestressing strand conform to ASTM A416

1.2.2)

Mild steel Plain bars grade SR-24 conform to …………………. Deformed bars grade SD-40 conform to …………………

2) Section properties of section

1800

2.1) Dimention 25.700 Length L.............. = 1,450.0 Depth D.............. = 750.0 Flange width top Bt............. = 600.0 Flange width bot. Bb............ = 230.0 Web Bw............ = 200.0 D1.............= 110.0 D2.............= 250.0 D3.............= 200.0 D4.............= 2.60 m ≤ 4.270 Girder spacing = 2600 2.2) Precast section A 0.03 ω + 3.00%

no.

m mm mm mm mm mm mm mm mm

1 2 3 4 5 690

1350 1400 ### ### ### 795 1200 ### ### ### 100 1000 12000000 ### 800

y

### ### ### ### ###

Ay²

### ### ### ### ### ###

Io

### ### ### ### ### ###

400 = =

586,350 mm² 14.253 kN/m

17.120248

200

4

### 704.04 745.96 ### ###

Top Slab

=

230.00 mm

A'

= 1,074,318 mm²

mm mm mm mm³ mm³

0 -1500

-1000

Topping-500

0

Girder 500

1000 Yb=745.959 1500

Yb'=1,131.603

2.3) Composite section

0.03 ω + 3.00%

150000 53900 158700 103750 120000 586350

1600 Ayi

yi

600

= = = = =

I yt yb Zt Zb

x

Haunch = Sidewalk+Barrier = A/C thickness =

30.00 mm 5.100 kN/m/girder 50.00 mm

weight =

24.00 kN/m³

31.373 kN/m

=

### mm4

I'

=

yt'

=

318.40 mm

yb'

=

1,131.60 mm

Zt'

=

### mm³

Zb'

=

### mm³

3) Load

HS 20-44 Loading system conforming to AASHTO standard. 1,176.7 kN-m

Mg

=

** Remark Wheel load.................=

Ms Mll+i Mt

= 1,413.5 kN-m = 1,619.1 kN-m = 1.3[Mg + Ms + 1.67(Mll+i)] = 6,882.4 kN-m

Impac factor...............= Distribution factor.......= hence : Mll+i..........

842.4 kN-m/wheel (AASHTO HS20-44) factor = 1.00

0.239 ≤ 0.300 1.829