Live Load Distribution Formulas for Single-Span Prestressed Concrete Integral Abutment Bridge Girders

Dicleli, Murat; Erhan, Semih

doi:10.1061/(asce)be.1943-5592.0000007

Cited by 39 publications

(25 citation statements)

References 13 publications

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“…Consequently, in the last decade, many research studies have been conducted on IBs. Most of these research studies are concentrated on the performance of IBs under thermal loads (Faraji et al 2001;Kalayci et al 2012), live load distribution among the components of IBs (Dicleli and Erhan 2011), soil-structure interaction effects in IBs (Petursson and Kerokoski 2013) as well as state of art and practice of IB design (Arockiasamy et al 2004). However, in spite of these research studies, standard analysis and design methods for IBs have not been fully established yet.…”

Section: Introductionmentioning

confidence: 99%

Parametric study on the effect of structural and geotechnical properties on the seismic performance of integral bridges

Erhan

Dicleli

2017

Bull Earthquake Eng

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In this paper practical techniques are introduced for detailed modeling of soilpile and soil-abutment interaction effects for integral bridges (IBs). Furthermore, a parametric study is conducted to determine appropriate structural configurations and geotechnical properties to enhance the seismic performance of IBs. For this purpose, numerous nonlinear structural models of a two-span IB including dynamic soil-bridge interaction effects are built. Nonlinear time history analyses (NTHA) of the IB models are then conducted using a set of ground motions with various intensities. In the analyses, the effect of various structural and geotechnical properties such as foundation soil stiffness, backfill compaction level, pile size and orientation, abutment height and thickness are considered. The results of NTHA are then used to assess the effects of these properties on the seismic performance of IBs in terms of member forces and deformations. It is found that while the proposed modeling techniques for IBs are easy to implement in commercially available structural analysis programs, they are also computationally efficient. However, the proposed structural model may not be used to study the soil deformations along the length of the embankment. For the IB and modeling approach under consideration, the bridge seismic response is found to be insensitive to the length of the embankment and damping of the embankment soil. Furthermore, IBs built with shorter and thinner abutments as well as large steel H-piles oriented to bend about their strong axis exhibit better seismic performance.

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Section: Introductionmentioning

confidence: 99%

Parametric study on the effect of structural and geotechnical properties on the seismic performance of integral bridges

Erhan

Dicleli

2017

Bull Earthquake Eng

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“…Cai (2005) proposed adjustments to the AASHTO DF expressions based on field measurements and FEA results of six steel bridges, while Hughs et al (2006) evaluated AASHTO DFs for PC spread box-girder bridges through field testing and FEA, and Cross et al (2009) conducted an experimental and analytical investigation on twelve steel and PC bridges with regard to shear DFs. Yousif and Hindi (2007), Dicleli and Erhan (2009), Harris (2010), Fanous et al (2011), andPuckett et al (2012) among others, further concentrated on computational modeling to improve DF estimation.…”

Section: Introductionmentioning

confidence: 99%

Field Tests of Two Prestressed-Concrete Girder Bridges for Live-Load Distribution and Moment Continuity

2016

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Two similar bridges constructed with a live load continuous connection were tested for live load distribution and joint continuity. Girder distribution factors (GDFs) were compared to AASHTO equivalent values. For positive moments on all girders as for negative moments on interior girders, results using AASHTO equivalent GDFs were found to be generally conservative.However, for negative moments on exterior girders, test results exceeded AASHTO values, with 2-lane results significantly so. GDF results were verified with a FEA model, which produced similar behavior to the field tests. With respect to joint continuity, it is estimated that a simple span would produce a maximum positive moment about 7% higher than the actual structure, while a completely continuous structure would produce a maximum positive moment about 16% lower than the actual structure. For negative moments, the actual structure experienced about 28% of that of a continuous structure. Shear reactions were also investigated.Recommendations are proposed for evaluating transverse distribution of live load as well as the longitudinal distribution of live load, accounting for the effect of joint continuity.

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“…The effect of bearing and piers on the live load distribution of skewed bridges have been investigated by many researchers (Chun, 2010;Dicleli and Erhan, 2009;Eom and Nowak, 2001;Suksawang and Nassif, 2007). It was observed that piers and bearing would not be affected by the live load in the finite element analysis, and that simulating boundary condition by hinge-roller supports can predict the bridge behavior properly.…”

Section: Bridge Numerical Modelingmentioning

confidence: 99%

“…To consider the skew effect on stress and deflection of MCB bridges, it is a necessity to obtain new simplified equations for those factors. for this purpose, a statistical method based on least square regression (Dicleli and Erhan, 2009) on obtained data from the parametric analysis was applied. Several new equations were proposed to determine the maximum distribution factor for positive stress and deflection at mid-span, and negative stress over intermediate support line of continuous skewed MCB bridges.…”

Section: Live Load Distribution Factor Equations Of the Skewed Mcb Brmentioning

confidence: 99%

Transverse load distribution of skew cast-in-place concrete multicell box - girder bridges subjected to traffic condition

Mohseni

Rashid

2013

Lat. Am. j. solids struct.

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Live Load Distribution Formulas for Single-Span Prestressed Concrete Integral Abutment Bridge Girders

Cited by 39 publications

References 13 publications

Parametric study on the effect of structural and geotechnical properties on the seismic performance of integral bridges

Parametric study on the effect of structural and geotechnical properties on the seismic performance of integral bridges

Field Tests of Two Prestressed-Concrete Girder Bridges for Live-Load Distribution and Moment Continuity

Transverse load distribution of skew cast-in-place concrete multicell box - girder bridges subjected to traffic condition

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