Scribd
Upload
1K views10 pages

Super T Girder

The document summarizes the design parameters used for the Super T-Girder precast concrete beam compared to standard Indonesian design parameters. It notes that the web and flange thicknesses of the Super T-Girder are thin and proposes thickening the web to 120mm and flange to 100mm, which would increase the girder weight slightly. A table compares the initial and proposed designs.

Uploaded by

Kinan Fauzan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
1K views10 pages

Super T Girder

The document summarizes the design parameters used for the Super T-Girder precast concrete beam compared to standard Indonesian design parameters. It notes that the web and flange thicknesses of the Super T-Girder are thin and proposes thickening the web to 120mm and flange to 100mm, which would increase the girder weight slightly. A table compares the initial and proposed designs.

Uploaded by

Kinan Fauzan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 10

Review of Super T

Girder
STANDARD DESIGN OF SUPER-T

Range of heights varies from


H=750mm to H=1850mm

Web thickness varies from


100mm – 120mm

Pretensioned Concrete Beam

2
Review of
Design Report
Super T-Girder

3
DESIGN PARAMETER USED
DESIGN REPORT SUPER-T VS. APB STANDARD PRODUCT
Design Design Report Super-T Adhi-Beton Standard Product
Parameter
Limit Concrete AASHTO LRFD SNI 2847:2013, SNI 7833:2012
Stresses
Load & Load 22TCN – 272 – 05 (Vietnamese SNI 1725:2016 (Indonesian National
Combinations Standard) Standard)
AASHTO LRFD
Loss of Prestress AASHTO LRFD AASHTO LRFD, Standard of Public Works
Ministry for Roads & Bridges (Bina
Marga/2011)
Reinforcement Longitudinal & Shear : Longitudinal & Shear : SNI 2847:2013
refers to ACI 318
Cambers & Immediate deflections PCI Rational Methods for long-term
Deflections deflections
Moment & Shear AASHTO LRFD ACI 318, SNI 2847:2013
Capacity
4
DESIGN PARAMETER USED
LIMIT CONCRETE STRESSES

Design Report Super-T Adhi-Beton Product (Indonesian


Standard)
At Initial At Initial:
Compression : 0.6fci’ Compression : 0.6fci’
Tension : -0.58 √fci’ Tension : -0.25√fci’

At Service At Service
Compression, due to permanent , Compression, due to permanent,
prestress and transient loads : prestress and transient loads:
0.6fc’ 0.6fc’
Compression, due to permanent Compression, due to permanent
and prestress loads: 0.45fc’ and prestress loads : 0.45fc’

Tension (moderate corrosive Tension : -0.5 √fc’


conditions)
: -0.5 √fc’ 5
DESIGN PARAMETER USED
LOAD & LOAD COMBINATIONS

Design Report Super-T Adhi-Beton Product (Indonesian


Standard)
Service I: Service I :
1.0 DL + 1.0 ADL + 1.0 LL 1.0 DL + 1.0 ADL + 1.0LL + 1.0EW

Service II: Service III:


1.0 DL + 1.0 ADL + 0.75LL 1.0 DL + 1.0 ADL + 0.8LL

Strength: Service IV
1.25 DL + 1.5 ADL + 1.75LL 1.0 DL + 1.0 ADL

Strength I:
1.0 DL + 2.0 ADL + 1.8 LL

Strength II:
1.0 DL + 2.0 ADL + 1.4 LL 6
DESIGN PARAMETER USED
INDONESIAN STANDARD (SNI 1725:2016)

7
Review of
Product Design
Super T-Girder

8
Web and Flange

Web and flange thickness are


very thin, we should consider
to thicken the web and flange
of Super T-Girder.
We can discuss the effect of addition
of web thickness (including changes of
strands)
9
Initial Design for Super-T Proposed Design for Super-T

Flange Thickness : 80mm Flange Thickness : 100mm


Web Thickness : 100mm Web Thickness : 120mm
Height : 1750mm Height : 1750mm
Weight : 66 tons/girder for 35m Weight : 70.7 tons/girder for 35m
span span

10

You might also like