Calibration and parametric investigation of integral abutment bridges

Salman, Nassr; Issa, Mohsen A.

doi:10.1016/j.engstruct.2020.111381

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…Soil-pile interaction is usually exerted by the interaction between pile stiffness and sounding soil stiffness. Many previous studies [2,8,10,11,13,15,26,27,33,34,37,39] reported that soil-pile interaction is a key variable to determine IAB behavior. However, several boring tests are performed before bridge design, thus properties of surrounding soils have uncertainties.…”

Section: Soil-structure Interactionmentioning

confidence: 99%

“…Many different analysis methods are currently available for IAB response prediction such as free expansion estimation or numerical, 2D or 3D, and static or time-history analyses [28][29][30][31][32][33]. The simplest, but widely utilized analysis consists of idealized 2D static modeling with environmental loads from the AASHTO extreme temperature [2,29,30].…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

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Influence of Construction Joint and Bridge Geometry on Integral Abutment Bridges

et al. 2021

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Although integral abutment bridges (IABs) have become a preferred construction choice for short- to medium-length bridges, they still have unclear bridge design guidelines. As IABs are supported by nonlinear boundaries, bridge geometric parameters strongly affect IAB behavior and complicate predicting the bridge response for design and assessment purposes. This study demonstrates the effect of four dominant parameters: (1) girder material, (2) bridge length, (3) backfill height, and (4) construction joint below girder seats on the response of IABs to the rise and fall of AASHTO extreme temperature with time-dependent effects in concrete materials. The effect of factors influencing bridge response, such as (1) bridge construction timeline, (2) concrete thermal expansion coefficient, (3) backfill stiffness, and (4) pile-soil stiffness, are assumed to be constant. To compare girder material and bridge geometry influence, the study evaluates four critical superstructure and substructure response parameters: (1) girder axial force, (2) girder bending moment, (3) pile moment, and (4) pile head displacement. All IAB bridge response values were strongly related to the four considered parameters, while they were not always linearly proportional. Prestressed concrete (PSC) bridge response did not differ significantly from the steel bridge response. Forces and moments in the superstructure and the substructure induced by thermal movements and time-dependent loads were not negligible and should be considered in the design process.

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Section: Soil-structure Interactionmentioning

confidence: 99%

Section: Introduction 1background and Motivationmentioning

confidence: 99%

Influence of Construction Joint and Bridge Geometry on Integral Abutment Bridges

et al. 2021

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“…Data from the analyses were used to develop an analytical model that could estimate the mobilized lateral stiffness of the approach backfill. Similar methodologies have been employed in recent studies, such as those by Kim et al [9] and Salman and Issa [10]. However, such techniques cannot account for soil deformation.…”

Section: Introductionmentioning

confidence: 95%

Simulation of soil-structure interaction of integral abutment bridges using advanced constitutive relations

Hassan,

Liyanapathirana,

Fuentes

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Integral bridges have been proposed as an attractive design concept that negate the requirements for expansion joints. However, owing to structural continuity, seasonal and diurnal thermal fluctuations have subjected the abutments to long-term cyclic interaction with approach backfills. This resulted in two notable geotechnical complications: ratcheting of lateral stresses and progressive soil deformation. To understand these phenomena, considerable research has been conducted using numerical methods. Here, either Winkler springs or simple constitutive relations, such as the Mohr-Coulomb model, are predominantly utilized. However, the former is based on monotonic displacement-dependent stiffness theories, and the latter is constrained by the limitations of the traditional yield surface plasticity. Hence, neither possesses the capability to simulate the hysteretic response, which is a characteristic of integral bridge approaches. Therefore, this study aims to present the advantages of using advanced constitutive relations to predict the long-term behavior of integral bridge approach backfills. First, using a lateral cyclic triaxial simulation, the significance of soil densification was highlighted by comparing the performance of the Mohr-Coulomb model with that of the bounding surface Dafalias-Manzari-2004 model. Subsequently, further comparisons were performed with the centrifuge model data of the integral abutment. At both the element and boundary value levels, the Mohr-Coulomb model could not capture the gradual accumulation of the lateral stresses. Conversely, the Dafalias-Manzari-2004 model can estimate the long-term passive pressure accumulation along the height of the abutment.

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Prediction of extreme response of an innovative HSR integral bridge subjected to crosswind and high-speed train

Xu,

Dai,

Chen

et al. 2023

Applied Mathematical Modelling

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Calibration and parametric investigation of integral abutment bridges

Cited by 9 publications

References 17 publications

Influence of Construction Joint and Bridge Geometry on Integral Abutment Bridges

Influence of Construction Joint and Bridge Geometry on Integral Abutment Bridges

Simulation of soil-structure interaction of integral abutment bridges using advanced constitutive relations

Prediction of extreme response of an innovative HSR integral bridge subjected to crosswind and high-speed train

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