Effect of Soil and Substructure Properties on Live-Load Distribution in Integral Abutment Bridges

Dicleli, Murat; Erhan, Semih

doi:10.1061/(asce)1084-0702(2008)13:5(527)

Cited by 23 publications

(32 citation statements)

References 17 publications

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“…Moreover, the scope of this research study is limited to short to medium length IBs where the superimposed dead load and thermal effects are assumed to be less significant compared to live load effects. Consequently, yielding of the piles is not anticipated under total load effects and the behavior of the backfill and foundation soil remains within the linear elastic range as proven by an earlier research study [12] due to the small lateral displacements of the abutments and piles under live load effects. This also ensures that potential formation of a gap behind the abutment due to cyclic thermal movements is negligible.…”

Section: Scope Of the Research Study And Assumptionsmentioning

confidence: 95%

“…In an earlier research study [12] the IB superstructure and substructure properties that affect the distribution of live load moment and shear in the abutments and piles are identified. These parameters are; span length, girder size and spacing for the superstructure and abutment height, pile size, pile spacing and foundation soil stiffness for the substructure.…”

Section: Bridges and Parameters Considered In The Analysesmentioning

confidence: 99%

“…Only recently, Dicleli and Erhan [12] have conducted a limited research study on live load distribution in IB girders. Most research on IBs is concentrated on the performance of such bridges under thermal effects [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Live load distribution equations for integral bridge substructures

Erhan¹,

Dicleli²

2009

Engineering Structures

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Section: Scope Of the Research Study And Assumptionsmentioning

confidence: 95%

Section: Bridges and Parameters Considered In The Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Live load distribution equations for integral bridge substructures

Erhan¹,

Dicleli²

2009

Engineering Structures

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“…Typically, for the IAB, the H-section pile is oriented at its weak axis to ensure flexibility in the lateral displacement of the super-structure [9][10][11][12][13]15,16,33]. However, in a skew bridge, it is difficult to precisely orient the pile at its weak axis as torsion is generated on the pile-head [2].…”

Section: Sub-structure Propertiesmentioning

confidence: 99%

Numerical Analysis of the Behavior of an IPM Bridge According to Super-Structure and Sub-Structure Properties

Park

Nam

2018

Sustainability

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Abstract:A bridge with an integrated and pile-bent abutment with a mechanically stabilized earth-wall (IPM) was developed by separating earth pressure from the abutment to overcome the problems typically faced by integral abutment bridges. Also, the IPM bridge removes expansion joints and bearing by integrating the super-structure and the abutment and does not need many piles because it separates the earth pressure from backfills. Therefore, it is superior in cost, durability, and maintainability to traditional bridges and is sustainable due to using less material. A numerical analysis was conducted to ascertain the behavior of the IPM bridge according to its super-structural and sub-structural characteristics. Based on the analysis results, the behaviors of the IPM bridge are as follows: The bending moments M y of the pre-stressed concrete (PSC) girder and the steel-plate girder of the bridge were influenced by the presence of the time-dependent loads. The contraction behavior in the PSC girder is largely due to the time-dependent loads, whereas the expansion behavior in the steel-plate girder is large due to its greater thermal expansion coefficient and temperature range compared with those of the PSC girder. In general, the suggested bridge length limit for PSC girders in both the integral abutment bridge and the IPM bridge is larger than that in a steel bridge. This needs to be reviewed again with consideration of the long-term and seasonal behaviors.

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“…Modeller üzerinde yapılan sonlu eleman boyutlarının yakınsaklık çalışmaları, kullanılan sonlu eleman ağının uygun olduğunu göstermiştir. İntegral köprülerdeki altyapı modellemesi ile ilgili daha detaylı bilgiler Dicleli ve Erhan [18] tarafından verilmiştir.…”

Section: Altyapının Modellenmesiunclassified

İntegral Köprülerde Hareketli Yükler Altında Üstyapı Özelliklerinin Kazık Kuvvetlerine Etkisi

Yalçin

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖzBu çalışmada, integral köprülerin kazıklarında oluşan kuvvetlere hareketli yüklerin etkisi, çeşitli üstyapı parametrelerinin değişimleriyle birlikte incelenmiştir. Bu amaçla, birçok üç boyutlu integral köprünün sonlu elemanlar modelleri kurulmuştur. Bu modellerin analizleri AASHTO LRFD hareketli yükleri altında yapılmıştır. Hareketli yükler en kritik etkileri bulabilmek için köprüler üzerinde enine ve boyuna yönde farklı konumlara yerleştirilmişlerdir. Analizlerde köprü uzunluğu, kiriş boyutu ve aralığı, kiriş adedi, tabliye kalınlığı ve konsol uzunluğu gibi çeşitli üstyapı parametreleri ele alınmıştır. Sonlu elemanlar analizleri sonucunda farklı parametrelere bağlı kazık kuvvetleri elde edilmiştir. Analizler sonucunda, kiriş tipi ve tabliye kalınlığı dışındaki parametrelerinin kazık kuvvetlerini önemli ölçüde etkiledikleri gözlenmiştir. Ayrıca, ele alınan birçok köprüde yükleme durumlarına bağlı olarak bazı kazıklarda çekme kuvveti oluşmuştur.Anahtar Kelimeler: İntegral köprü, Üstyapı, Hareketli yük, Kazık kuvveti Effects of Superstructure Properties on Pile Forces in Straight Integral Bridges under Live Load AbstractIn this study, the effects of truck loads on pile forces for straight integral bridges is investigated together with the variations in superstructure parameters. For this purpose, finite element models of numerous three-dimensional integral bridges are built and the analyses are conducted under AASHTO LRFD live loads. Truck loads are located in various longitudinal and transverse positions on the bridge in order to get the most critical loading. In the analyses, the superstructure parameters such as bridge length, girder type, girder spacing, number of girders, slab thickness and cantilever length are considered and the pile forces for all these bridges are obtained. The analyses results reveal that all the superstructure parameters except girder type and slab length have significant effect on pile forces. Additionally, in almost all bridges, for some load cases tension forces in piles are observed.

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Effect of Soil and Substructure Properties on Live-Load Distribution in Integral Abutment Bridges

Cited by 23 publications

References 17 publications

Live load distribution equations for integral bridge substructures

Live load distribution equations for integral bridge substructures

Numerical Analysis of the Behavior of an IPM Bridge According to Super-Structure and Sub-Structure Properties

İntegral Köprülerde Hareketli Yükler Altında Üstyapı Özelliklerinin Kazık Kuvvetlerine Etkisi

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