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Title:

Alternative Framing Strategies for Steel I-girder Phase Construction Projects to Alleviate Fit-up Issues
Cover of Alternative Framing Strategies for Steel I-girder Phase Construction Projects to Alleviate Fit-up Issues

Accession Number:

01555667

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This paper presents an investigation to determine the role and influence of the cross- frames between construction phases on closure pour region performances in steel I-girder bridges using phase construction. Use of phase construction can lead to fit-up issues and elevation differences between phases arising from sources such as construction errors and differential creep and shrinkage due to construction timing. To facilitate the construction and alleviate fit-up issues, an alternative cross-frame configuration between construction phases is investigated as well as the total elimination of the cross frame between construction phases. A parametric study was conducted considering: girder spacing, deck thickness, girder depth, phase configuration and cross-frame spacing. Detailed 3D finite element models were created in order to perform the parametric study. The obtained results indicated that total elimination of cross-frames between construction phases increases the maximum live load distribution factor of girders up to 14%. The deck transverse moment in the closure region increased up to 67%. Use of horizontal struts between the phases provided performance similar to the use of full cross-frames and constitutes an attractive alternative. The results also indicated that the axial loads in the horizontal struts are almost similar to the corresponding component of the full cross-frame.

Supplemental Notes:

This paper was sponsored by TRB committee AFH40 Construction of Bridges and Structures.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-4039

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Mohammadi, Alireza
Yakel, Aaron
Gull, Jawad H
Azizinamini, Atorod

Pagination:

16p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Cross frames

Geographic Terms:

Florida

Subject Areas:

Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-4039

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Dec 30 2014 1:19PM