Study of Horizontally Curved Slab-on-Steel I-Girder Bridges with Integral Abutments Under Thermal Loading

10.32920/ryerson.14648463 ◽

2021 ◽

Author(s):

Ahmed Abdrabbo

Keyword(s):

Thermal Loading ◽

Horizontal Displacement ◽

Radius Of Curvature ◽

Integral Abutment ◽

Foundation Soil ◽

Integral Abutment Bridges ◽

Horizontally Curved ◽

Girder Bridges ◽

Bridge Span ◽

Bridge Performance

Integral abutment bridges have started to become part of the construction industry worldwide. However, they present challenges arising from the monolithic connection between bridge deck and the abutment. Thermal loading induced by daily cycles superimposed on seasonal cycles result in complex soil-structure interaction. Due to uncertainties in integral abutment bridge performance, there is no consensus among different codes on the bridge maximum length limit. A parametric study was carried out, using SAP2000 software, to examine the behavior of horizontal curved concrete slap-on-steel Igirders, under the effect of thermal loading conditions (±65°c). The self-weight of the bridge was considered. Spatial variables, including abutment height, radius of curvature, bridge span length, stiffness of backfill and types of foundation soil, were considered. The numerical analysis results were used to drive equation relating abutment height and bridge span with the maximum bridge length limit, which produces 40 mm horizontal displacement on pile head.

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Simple Approach to Calculate Displacements and Rotations in Integral Abutment Bridges

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/2522-04 ◽

2015 ◽

Vol 2522 (1) ◽

pp. 39-46 ◽

Cited By ~ 1

Author(s):

Suhail Albhaisi ◽

Hani Nassif

Keyword(s):

Parametric Study ◽

Thermal Loading ◽

Three Dimensional ◽

Field Measurements ◽

Simple Approach ◽

Fe Model ◽

Integral Abutment ◽

Foundation Soil ◽

Integral Abutment Bridges ◽

Abutment Bridges

This paper presents a simple approach to calculate the displacements and the rotations induced by thermal loading in integral abutment bridges (IABs). The approach was derived from the results of a parametric study that investigated the effect of substructure stiffness on the performance of short- and medium-length steel IABs built on clay and sand under thermal load effects. Various parameters, such as pile size and orientation, pile material, and foundation soil stiffness, were considered in the study. Detailed three-dimensional (3-D) finite element (FE) models using the software LUSAS were developed to capture the overall behavior of IABs. The developed 3-D FE model was calibrated with field measurements obtained from a previous study. A parametric study was carried out with the calibrated models to study the effects of the above parameters on the performance of IABs under thermal loading using the AASHTO load and resistance factor design temperature ranges. The study showed that most parameters have significant effects on the displacement and rotation of the abutment and the supporting piles. Also, for relatively wide IABs, there were significant variations in the displacement and rotations in the substructure elements between interior and exterior locations. This approach, which used simple equations and charts and included parameters such as the length of the bridge, the stiffness of the foundation soil, and the pile location, provided results that were comparable with those of a detailed FE analysis.

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Design of horizontally curved composite box-girder bridges: a simplified approach

Canadian Journal of Civil Engineering ◽

10.1139/l95-009 ◽

1995 ◽

Vol 22 (1) ◽

pp. 93-105 ◽

Cited By ~ 5

Author(s):

M. S. Cheung ◽

S. H. C. Foo

Keyword(s):

Radius Of Curvature ◽

Curved Bridges ◽

Box Girders ◽

Box Girder Bridges ◽

Cross Sectional ◽

Box Girder ◽

Horizontally Curved ◽

Finite Strip ◽

Girder Bridges ◽

Bridge Models

Because of their excellent torsional capacity, box girders are used extensively in modern bridge construction having curved alignments. Applications of most design codes have been limited to bridges where the radius of curvature is much greater than the span length and cross-sectional dimensions. To meet the practical requirements arising during the design process, simple design methods are needed for curved bridges. This paper presents the results of a parametric study on the relative behaviour of curved and straight box-girder bridges and on the development of a simplified design method for the combined longitudinal moment of curved bridges. The combined moment includes the effects of flexure, torsion, and distortion. Three simply supported concrete-steel composite bridge models, including single-cell, twin-cell, and three-cell box girders and subjected to loadings as specified in the Ontario Highway Bridge Design Code, were analyzed using the finite strip method. The parameters considered in the study include types of cross section; types, locations, and magnitudes of loads; span lengths; and radius of curvature. Preliminary analysis of the results suggests that the behaviour of horizontally curved box-girder bridges is dependent on a variety of parameters, but most importantly on the span-to-radius ratio. Empirical relationships for combined longitudinal moment between curved and straight box-girder bridges are also proposed. Key words: bridge, curved, composite, design, finite strip.

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Effect of thermal loading on the performance of horizontally curved I-girder bridges

Risk-based Bridge Engineering ◽

10.1201/9780367815646-15 ◽

2019 ◽

pp. 179-194

Author(s):

G.W. William ◽

S.N. Shoukry ◽

K.C. McBride

Keyword(s):

Thermal Loading ◽

Horizontally Curved ◽

Girder Bridges

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Integral Pile-Backfill Soil Relationship in Stub-Type Integral Abutment Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.699.388 ◽

2014 ◽

Vol 699 ◽

pp. 388-394 ◽

Cited By ~ 1

Author(s):

Thevaneyan K. David ◽

John P. Forth

Keyword(s):

Lateral Loading ◽

Soil Types ◽

Integral Abutment ◽

Element Analysis ◽

Foundation Soil ◽

Integral Abutment Bridges ◽

Abutment Bridges ◽

Backfill Soil ◽

Integral Abutment Bridge ◽

Type Integral

Temperature effects are significant to the sustainability of integral abutment bridges with the elimination of expansion joints. The thermally induced lateral movement of the structural components is opposed by the backfill soil supporting the components of integral abutment bridges. A 2D finite element analysis was performed on a typical integral abutment bridge using OASYS SAFE to investigate the complex interactions that exist between the pile supporting stub-type integral abutment and the backfill soil. The primary objective of this paper is to compare the effect of various soil types on the displacement of the piles when subjected to lateral loading and secondly to identify the significance of cyclic lateral load on the behaviour of the piles for various foundation soil types. The results suggest similar effect on the integral pile displacements for investigated soil types, especially for non-cyclic lateral loading.

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