Development and feasibility assessment of shallow pressbrake-formed steel tub girders for short-span bridge applications

Michaelson, Gregory K.

doi:10.33915/etd.6227

Cited by 6 publications

(21 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Short Span Steel Bridge Alliance (SSSBA) is a group of bridge industry leaders (including steel manufacturers, fabricators, service centers, coaters, researchers, and representatives of related associations and government organizations) who have joined together to provide educational information on the design and construction of short-span steel bridges in installations up to 140 feet in length (Michaelson, 2014). From within the SSSBA technical working group, a shallow press-brake-formed steel tub girder was developed.…”

Section: Abstract Experimental Evaluation Of Non-composite Shallow Prmentioning

confidence: 99%

“…Therefore, only global lateral-torsional buckling modes need to be assessed. According to Michaelson (2014), the first order lateraltorsional buckling capacity of a press-brake-formed tub girder without lateral bracing is calculated using Eq. 2.3.…”

Section: Stability Of Non-composite Cold-formed Steel Tub Girdersmentioning

confidence: 99%

“…Second-order effects due to load eccentricities or initial imperfections should also be considered. Therefore, the second-order lateral deflection that arises from an applied moment M on a singly symmetric beam is (Michaelson, 2014):…”

Section: =mentioning

confidence: 99%

“…The following equations are derived using provisions mentioned by Galambos (1968) and Ziemian (2010). For more a detailed derivation, the reader is referred to (Michaelson, 2014).…”

Section: Torsional Behavior Of Thin-walled Sectionsmentioning

confidence: 99%

“…To demonstrate the increased torsional stiffnesss with the use of SIP formwork a summarized example is illistrated below (Michaelson, 2014). In this example the applied torque…”

Section: Pure Torsionmentioning

confidence: 99%

See 4 more Smart Citations

Experimental Evaluation of Non-Composite Shallow Press-Brake-Formed Steel Tub Girders

Kelly

View full text Add to dashboard Cite

First, I would like to express my deepest appreciation to my family for their love and support through my educational pursuits. My parents and grandparents not only financially supported me, but also encouraged me to work hard and never give up on my life goals. I would also like to thank my sisters, Katie and Stephanie Kelly, boyfriend, Matthew Rector, and dear friend, Lyndsay Wehrle for your support through it all. I wish to express my sincere gratitude to my advisor Dr. Karl Barth for giving me the opportunity to work toward my Master's Degree. His support and encouragement have provided me with a strong educational base from which I can build a successful career. Also, I would like to thank Dr. Gregory Michaelson and Dr. P. V. Vijay for serving on my academic committee. I greatly appreciate your time and support in assisting me through my graduate studies. As well as, Dr. Gregory Michaelson's contribution to the finite element analysis conducted herein, are greatly appreciated. The financial support of the Short Span Steel Bridge Alliance, as well as donations from; Nucor-Yamato Steel, SSAB Americas, and EVRAZ North America is greatly appreciated. I would also like to thank Greiner Industries, American Tank & Fabricating, and AZZ Galvanizing, Inc. for their efforts in fabricating the experimental girder specimens. Without their combined help the development of this research would not have been possible. Special thanks to graduate student Bryan Gallion, undergraduate research assistants Matthew Rector and Eric Rogers, and laboratory technician Jerry Nestor for your contributions throughout the project. iv TABLE OF CONTENTS Contents

show abstract

Section: Abstract Experimental Evaluation Of Non-composite Shallow Prmentioning

confidence: 99%

Section: Stability Of Non-composite Cold-formed Steel Tub Girdersmentioning

confidence: 99%

Section: =mentioning

confidence: 99%

“…The following equations are derived using provisions mentioned by Galambos (1968) and Ziemian (2010). For more a detailed derivation, the reader is referred to (Michaelson, 2014).…”

Section: Torsional Behavior Of Thin-walled Sectionsmentioning

confidence: 99%

“…To demonstrate the increased torsional stiffnesss with the use of SIP formwork a summarized example is illistrated below (Michaelson, 2014). In this example the applied torque…”

Section: Pure Torsionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Evaluation of Non-Composite Shallow Press-Brake-Formed Steel Tub Girders

Kelly

View full text Add to dashboard Cite

show abstract

Development of Improved Equations for Live Load Moment Distribution in Interior Girders of Shallow Steel Tub Girder Bridges

Barth,

Michaelson,

Pyrialakou

et al. 2023

ce papers

View full text Add to dashboard Cite

The focus of this paper is the development of improved live load distribution factor (LLDF) prediction equations for interior beams of press‐brake‐formed tub girder (PBFTG) bridges. PBFTGs consist of cold‐bent standard plate widths and thicknesses to form a trapezoidal box girder. Based on a survey of literature and field testing performed on PBFTG bridges across multiple states in the United States, the empirical equations found in the American Association of State Highway and Transportation Officials Load Resistance and Factor Design Bridge Design Specifications (AASHTO LRFD BDS) have been found to be conservatively applicable to shallow steel tub girder bridges. Improvements can be made to AASHTO LRFD BDS provisions relating to shallow steel tub girders and their respective live load distribution factors (LLDFs). To overcome this gap in design and analysis, rigorous three‐dimensional finite element analysis tools were developed and benchmarked against field implementations. The tools were used to analyze the live load distribution behavior of an interior girder of a matrix of approximately 18,000 PBFTG bridges. From the result of the analysis, statistical methods were employed to produce simplified empirical equations to better predict live load moment distribution in PBFTGs. The simplified equations are to be used in conjunction with line girder analysis to further simplify the design of shallow steel tub girder bridges and expand their application in the short‐span bridge market.

show abstract

Field Determined Live Load Distribution Factors for Modular Press-Brake-Formed Tub Girders

Barth

Michaelson

Roh

et al. 2021

Transportation Research Record: Journal of the Transportation R

Self Cite

View full text Add to dashboard Cite

This paper is focused on the field performance of a modular press-brake-formed tub girder (PBFTG) system in short span bridge applications. The scope of this project to conduct a live load field test on West Virginia State Project no. S322-37-3.29 00, a bridge utilizing PBFTGs located near Ranger, West Virginia. The modular PBFTG is a shallow trapezoidal box girder cold-formed using press-brakes from standard mill plate widths and thicknesses. A technical working group within the Steel Market Development Institute’s Short Span Steel Bridge Alliance, led by the current authors, was charged with the development of this concept. Research of PBFTGs has included analyzing the flexural bending capacity using experimental testing and analytical methods. This paper presents the experimental testing procedures and performance of a composite PBFTG bridge.

show abstract

Development and feasibility assessment of shallow pressbrake-formed steel tub girders for short-span bridge applications

Cited by 6 publications

References 9 publications

Experimental Evaluation of Non-Composite Shallow Press-Brake-Formed Steel Tub Girders

Experimental Evaluation of Non-Composite Shallow Press-Brake-Formed Steel Tub Girders

Development of Improved Equations for Live Load Moment Distribution in Interior Girders of Shallow Steel Tub Girder Bridges

Field Determined Live Load Distribution Factors for Modular Press-Brake-Formed Tub Girders

Contact Info

Product

Resources

About