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Expanding the Applicability of Press-Brake-Formed Tub Girders Through the Extension of the Maximum Span Length and the Evaluation of Pier Continuity.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Expanding the Applicability of Press-Brake-Formed Tub Girders Through the Extension of the Maximum Span Length and the Evaluation of Pier Continuity./
Author:	Tennant, Robert M.
Description:	1 online resource (477 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-05, Section: A.
Contained By:	Dissertations Abstracts International84-05A.
Subject:	Strain gauges. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29731072click for full text (PQDT)
ISBN:	9798352976647

Expanding the Applicability of Press-Brake-Formed Tub Girders Through the Extension of the Maximum Span Length and the Evaluation of Pier Continuity.
Tennant, Robert M.

Expanding the Applicability of Press-Brake-Formed Tub Girders Through the Extension of the Maximum Span Length and the Evaluation of Pier Continuity. - 1 online resource (477 pages)

Source: Dissertations Abstracts International, Volume: 84-05, Section: A.

Thesis (Ph.D.)--West Virginia University, 2022.

Includes bibliographical references

The Short Span Steel Bridge Alliance (SSSBA) is a group of bridge and buried soil steel structure industry leaders who provide educational information on the design and construction of short-span steel bridges in installations up to 140 feet in length. Within the SSSBA technical working group, a modular, shallow press-brake-formed tub girder (PBFTG) was developed to address the demand in the short-span steel bridge market for rapid infrastructure replacement solutions. PBFTGs consist of modular, shallow, trapezoidal boxes fabricated from cold-bent structural steel plate. A concrete deck, or other deck option, may be placed on the girder, and the modular unit can be shipped by truck to the bridge site. PBFTGs perform exceptionally well in simply supported, right, straight bridges utilizing current American Association of State and Highway Transportation Officials Load Resistance and Factor Design Bridge Design Specifications' (AASHTO LRFD BDS) Live Load Distribution Factors (LLDFs). The specifications limit the use of PBFTGs outside of these scenarios, despite the expectation they would perform well in a variety of other situations. More research and data are necessary to validate the current limitations in the AASHTO LRFD BDS and increase the applicability of PBFTGs into continuous spans and skewed bridges. The scope of this project was to expand the applicability and usability of the PBFTG system. This was performed in several stages. First, a complete understanding and background of PBFTGs, LLDFs, box-girder capacity determinations, link slabs, and the AASHTO LRFD BDS was provided. This understanding and background of the restrictions placed on PBFTGs provided insight when developing the methodologies to overcome these restrictions. Next, analytical modeling techniques were developed and refined utilizing complicated geometry and nonlinear finite element methods. These modeling techniques were benchmarked against numerous historical laboratory tests and live load field tests of in-service PBFTG bridges. Then, the analytical tools were employed in sensitivity and parametric studies on PBFTG bridge models, resulting in proposed simplified empirical LLDFs, which better predict live load distribution than those equations present in the AASHTO LRFD BDS. These tools were also used to assess the effect of bearing line skew on the capacity of PBFTGs. Finally, life cycle laboratory fatigue testing was performed on two PBFTGs joined by a full-scale link slab to assess the applicability of the joint in continuous PBFTG bridges. Results of this project demonstrate the use of PBFTGs can be expanded into continuous spans using link slabs and more accurate LLDFs may be used to increase the economic viability of the system in the short-span bridge market. In addition, the analytical tools developed during this study relating to the capacity of skewed PBFTGs will serve as the basis for future research in this field.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798352976647Subjects--Topical Terms:

3563166
Strain gauges.
Index Terms--Genre/Form:

542853
Electronic books.

Expanding the Applicability of Press-Brake-Formed Tub Girders Through the Extension of the Maximum Span Length and the Evaluation of Pier Continuity.
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100 1 $a Tennant, Robert M. $3 3698896
245 1 0 $a Expanding the Applicability of Press-Brake-Formed Tub Girders Through the Extension of the Maximum Span Length and the Evaluation of Pier Continuity.
264 0 $c 2022
300 $a 1 online resource (477 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 84-05, Section: A.
500 $a Advisor: Barth, Karl E.; Michaelson, Gregory K.; B, Udaya; Chen, Hung-Liang.
502 $a Thesis (Ph.D.)--West Virginia University, 2022.
504 $a Includes bibliographical references
520 $a The Short Span Steel Bridge Alliance (SSSBA) is a group of bridge and buried soil steel structure industry leaders who provide educational information on the design and construction of short-span steel bridges in installations up to 140 feet in length. Within the SSSBA technical working group, a modular, shallow press-brake-formed tub girder (PBFTG) was developed to address the demand in the short-span steel bridge market for rapid infrastructure replacement solutions. PBFTGs consist of modular, shallow, trapezoidal boxes fabricated from cold-bent structural steel plate. A concrete deck, or other deck option, may be placed on the girder, and the modular unit can be shipped by truck to the bridge site. PBFTGs perform exceptionally well in simply supported, right, straight bridges utilizing current American Association of State and Highway Transportation Officials Load Resistance and Factor Design Bridge Design Specifications' (AASHTO LRFD BDS) Live Load Distribution Factors (LLDFs). The specifications limit the use of PBFTGs outside of these scenarios, despite the expectation they would perform well in a variety of other situations. More research and data are necessary to validate the current limitations in the AASHTO LRFD BDS and increase the applicability of PBFTGs into continuous spans and skewed bridges. The scope of this project was to expand the applicability and usability of the PBFTG system. This was performed in several stages. First, a complete understanding and background of PBFTGs, LLDFs, box-girder capacity determinations, link slabs, and the AASHTO LRFD BDS was provided. This understanding and background of the restrictions placed on PBFTGs provided insight when developing the methodologies to overcome these restrictions. Next, analytical modeling techniques were developed and refined utilizing complicated geometry and nonlinear finite element methods. These modeling techniques were benchmarked against numerous historical laboratory tests and live load field tests of in-service PBFTG bridges. Then, the analytical tools were employed in sensitivity and parametric studies on PBFTG bridge models, resulting in proposed simplified empirical LLDFs, which better predict live load distribution than those equations present in the AASHTO LRFD BDS. These tools were also used to assess the effect of bearing line skew on the capacity of PBFTGs. Finally, life cycle laboratory fatigue testing was performed on two PBFTGs joined by a full-scale link slab to assess the applicability of the joint in continuous PBFTG bridges. Results of this project demonstrate the use of PBFTGs can be expanded into continuous spans using link slabs and more accurate LLDFs may be used to increase the economic viability of the system in the short-span bridge market. In addition, the analytical tools developed during this study relating to the capacity of skewed PBFTGs will serve as the basis for future research in this field.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Strain gauges. $3 3563166
650 4 $a Load. $3 3562902
650 4 $a Cold. $3 560283
650 4 $a Behavior. $3 532476
650 4 $a Highway construction. $3 3698897
650 4 $a Concrete. $3 666349
650 4 $a Metal fatigue. $3 3681450
650 4 $a Prestressed concrete. $3 3381540
650 4 $a Roads & highways. $3 3555163
650 4 $a Design specifications. $3 3683440
650 4 $a Stress-strain curves. $3 3560389
650 4 $a Reinforced concrete. $3 861675
650 4 $a Bridges. $3 868720
650 4 $a Civil engineering. $3 860360
650 4 $a Design. $3 518875
650 4 $a Transportation. $3 555912
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0543
690 $a 0389
690 $a 0709
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a West Virginia University. $3 1017532
773 0 $t Dissertations Abstracts International $g 84-05A.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29731072 $z click for full text (PQDT)