Seismic Performance of Segmental Precast Unbonded Posttensioned Concrete Bridge Columns

Ou, Yu‐Chen; Chiewanichakorn, Methee; Aref, Amjad J.; Lee, George C.

doi:10.1061/(asce)0733-9445(2007)133:11(1636)

Cited by 192 publications

(88 citation statements)

References 11 publications

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“…Hewes and Priestley (2002) proposed a simplified analytical model to predict the lateral force-displacement relationship. Ou et al (2007) extended the approach to hybrid UPTSCs (with longitudinal mild steel across the segments' joints), and using a modified curvature to account for the effect of mild steel, they showed the accuracy of the method for hybrid UPTSCs. Palermo et al (2007) showed that a similar design procedure considering lumped plasticity models can be used to design and model hybrid bridge structures.…”

Section: Introductionmentioning

confidence: 99%

“…Three dimensional finite element (FE) modeling has been performed to predict the force-displacement behavior of UPTSCs (Dawood et al 2011;Ou et al 2007;Chou et al 2013;Sideris 2015;Youssf et al 2015b). Ou et al (2007) demonstrated that three dimensional FE modeling can be used to effectively predict the lateral response of UPTSCs.…”

Section: Introductionmentioning

confidence: 99%

“…Ou et al (2007) demonstrated that three dimensional FE modeling can be used to effectively predict the lateral response of UPTSCs. Chou et al (2013) and Kim et al (2010) showed that two dimensional FE modeling can also predict the force-displacement behavior response of UPTSCs.…”

Section: Introductionmentioning

confidence: 99%

“…The concept of the analytical method was similar to previous studies (Hewes and Priestley 2002;Ou et al 2007;Pampanin et al 2001); however, the displacement at the column top was considered as the independent variable rather than the curvature at the base of column. Moreover, the plastic hinge length expression proposed by Hassanli et al (2017) was considered.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analytical Study of Force–Displacement Behavior and Ductility of Self-centering Segmental Concrete Columns

Hassanli

Youssf

Mills

et al. 2017

Int J Concr Struct Mater

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In this study the behavior of unbonded post-tensioned segmental columns (UPTSCs) was investigated and expressions were proposed to estimate their ductility and neutral axis (NA) depth at ultimate strength. An analytical method was first employed to predict the lateral force-displacement, and its accuracy was verified against experimental results of eight columns. Two stages of parametric study were then performed to investigate the effect of different parameters on the behavior of such columns, including concrete compressive strength, axial stress ratio, diameter and height of the column, axial stress level, duct size, stress ratio of the PT bars, and thickness and ultimate tensile strain of fiber reinforced polymer wraps. It was found that the column's aspect ratio and axial stress ratio were the most influential factors contributing to the ductility, and axial stress ratio and column diameter were the main factors contributing to the NA depth of self-centering columns. While at aspect ratios of less than ten, as the axial stress ratio increased, the ductility increased; at aspect ratios higher than ten, the ductility tended to decrease when the axial stress ratio increased. Using the results of parametric study, nonlinear multivariate regression analyses were performed and new expressions were developed to predict the ductility and NA depth of UPTSCs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical Study of Force–Displacement Behavior and Ductility of Self-centering Segmental Concrete Columns

Hassanli

Youssf

Mills

et al. 2017

Int J Concr Struct Mater

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“…A shortened construction time, in turn, leads to important safety and economic advantages when traffic disruption or rerouting is necessary (Billington et al 2001;Ou et al 2007;Murla-Vila et al 2012;EIGawady and Dawood 2012).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Totally Prefabricated Bridge Substructure Designed According to Korea Highway Bridge Design (KHBD) and AASHTO-LRFD

Kim

2013

Int J Concr Struct Mater

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The purpose of this study was to investigate the design comparison of totally prefabricated bridge substructure system. Prefabricated bridge substructure systems are a relatively new and versatile alternative in substructure design that can offer numerous benefits. The system can reduce the work load at a construction site and can result in shorter construction periods. The prefabricated bridge substructures are designed by the methods of Korea Highway Bridge Code (KHBD) and load and resistance factor design (AASHTO-LRFD). For the design, the KHBD with DB-24 and DL-24 live loads is used. This study evaluates the design method of KHBD (2005) and AASHTO-LRFD (2007) for totally prefabricated bridge substructure systems. The computer program, reinforced concrete analysis in higher evaluation system technology was used for the analysis of reinforced concrete structures. A bonded tendon element is used based on the finite element method, and can represent the interaction between the tendon and concrete of a prestressed concrete member. A joint element is used in order to predict the inelastic behaviors of segmental joints. This study documents the design comparison of totally prefabricated bridge substructure and presents conclusions and design recommendations based on the analytical findings.

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Dynamics and seismic performance of rocking bridges accounting for the abutment‐backfill contribution

Thomaidis

Kappos

Cámara

2020

Earthq Engng Struct Dyn

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Summary The present study explores analytically the concept of rocking isolation in bridges considering for the first time the influence of the abutment‐backfill system. The dynamic response of rocking bridges with free‐standing piers of same height and same section is examined assuming negligible deformation for the substructure and the superstructure. New relationships for the prediction of the bridge rocking motion are derived, including the equation of motion and the restitution coefficient at each impact at the rocking interfaces. The bridge structure is found to be susceptible to a failure mode related to the failure of the abutment‐backfill system, which can occur prior to the well‐known overturning of the rocking piers. Thus, a new failure spectrum is proposed called Failure Minimum Acceleration Spectrum (FMAS) which extends the overturning spectrum put forward in previous studies, and it differs in principle from the latter. The comparison with the dynamic response of bridges modelled as rocking frames without abutments reveals not only that seat‐type abutments and their backfill have a generally beneficial effect on the seismic performance of rocking pier bridges by suppressing the free rocking motion of the frame system, but also that the simple frame model cannot capture all salient features of the rocking bridge response as it misses potential failure modes, overestimating the rocking bridge's safety when these modes are critical.

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Seismic Performance of Segmental Precast Unbonded Posttensioned Concrete Bridge Columns

Cited by 192 publications

References 11 publications

Analytical Study of Force–Displacement Behavior and Ductility of Self-centering Segmental Concrete Columns

Analytical Study of Force–Displacement Behavior and Ductility of Self-centering Segmental Concrete Columns

Comparison of Totally Prefabricated Bridge Substructure Designed According to Korea Highway Bridge Design (KHBD) and AASHTO-LRFD

Dynamics and seismic performance of rocking bridges accounting for the abutment‐backfill contribution

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