Seismic modeling of integral abutment bridges in Illinois

Kozak, Derek L.; LaFave, James M.; Fahnestock, Larry A.

doi:10.1016/j.engstruct.2018.02.088

Cited by 32 publications

(16 citation statements)

References 20 publications

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“…Some researchers have studied the performance of IAB [12][13][14][15][16][17][18]. They showed that IABs exhibit adequate performance but many of them are highly stressed.…”

Section: Performance Of Iabmentioning

confidence: 99%

“…Precise and computationally efficient numerical models that show cyclic loading of plastic hinges in beam-column elements are needed for simulating the response and evaluating a structural system's performance. Finite element models for nonlinear material response of beam-column members fall into two categories: concentrated plasticity and distributed plasticity [16,45]. In concentrated plasticity, the nonlinear behavior of a beam-column member is grouped into rotational springs at the ends of one linear elastic element.…”

Section: Plastic Hinges In Modelingmentioning

confidence: 99%

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A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Naji¹,

Firoozi

Firoozi³

2020

Lat. Am. j. solids struct.

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Bridges are one of the most critical parts of transportation networks that may suffer damages against earthquakes. Also, seismic responses of most bridges are significantly influenced by soil-structure interaction effects. Taking out expansion joints in the bridges may cause many difficulties in design and analysis due to the complexity of soil-structure interaction and nonlinear behavior. The secondary loads on an IAB include seismic load, temperature variation, creep, shrinkage, backfill pressure on back wall and abutment, all of which cause superstructure length and stress variations in girder changes. The purpose of this study is to recognize the most effective parameters of analysis IABs. Findings show that the backfill material behind the IABs has a significant effect on the performance of IABs. Using a compressible material behind the abutments would enhance the in-service performance of IABs. Finally, behaviour of abutment may be greatly affected by thermal load and soil pressure. Thermal expansion coefficient significantly influences girder axial force, girder bending moment, and pile head/abutment displacement.

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“…Some researchers have studied the performance of IAB [12][13][14][15][16][17][18]. They showed that IABs exhibit adequate performance but many of them are highly stressed.…”

Section: Performance Of Iabmentioning

confidence: 99%

Section: Plastic Hinges In Modelingmentioning

confidence: 99%

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Naji¹,

Firoozi

Firoozi³

2020

Lat. Am. j. solids struct.

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“…Additionally, the integral abutment bridge can be selected as a seismic retrofitting method for existing bridges [9,10] in addition to the conventional retrofitting techniques [11][12][13]. In spite of its increasing usage, standard design methods for integral bridges have not been fully established yet that led to the necessity of further research [14][15][16]. e research study of Far et al [17] has presented that thermal and seismic loads greatly affect the design of integral abutment bridges due to the integrity of the structure and complex soil-structure-pile interactions.…”

Section: Introductionmentioning

confidence: 99%

“…e research study of Far et al [17] has presented that thermal and seismic loads greatly affect the design of integral abutment bridges due to the integrity of the structure and complex soil-structure-pile interactions. Similarly, there have been studies concerning the seismic behavior of non-IABs [14,18]. ese studies looked into the effects that elastomeric bearings have on energy dissipation, as well as how non-IABs behave as a whole system when subjected to seismic excitation.…”

Section: Introductionmentioning

confidence: 99%

“…e studies generally concluded that the bearings, abutment backwall, and pier columns provide a large contribution to an entire bridge's seismic behavior. Kozak et al [14] have evaluated an existing integral abutment bridge seismic behavior including all important limit states that could occur in each bridge components. Erhan et al [19] have demonstrated that integral bridges have superior seismic performance in terms of smaller inelastic structure displacement, rotations, or forces compared to conventional bridges.…”

Section: Introductionmentioning

confidence: 99%

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Seismic Performance Evaluation of a Fully Integral Concrete Bridge with End‐Restraining Abutments

Choi

Moreno

Lim³

et al. 2019

Advances in Civil Engineering

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A fully integral bridge that is restrained at both ends by the abutments has been proposed to form a monolithic rigid frame structure. Thus, the feasible horizontal force effect due to an earthquake or vehicle braking is mainly prevented by the end-restraining abutments. In a recent study, a fully integral bridge with appropriate end-restraining abutment stiffness was derived for a multispan continuous railroad bridge based on linear elastic behavior. Therefore, this study aims to investigate the nonlinear behavior and seismic capacity of the fully integral bridge and then to assess the appropriate stiffness of the end-restraining abutment to sufficiently resist design earthquake loadings through a rigorous parametric study. The finite element modeling and analyses are performed using OpenSees. In order to obtain the force-deflection curves of the models, nonlinear static pushover analysis is performed. It is confirmed that the fully integral bridge prototype in the study meets the seismic performance criteria specified by Caltrans. The nonlinear static pushover analysis results reveal that, due to the end-restraining effect of the abutment, the lateral displacement of the fully integral bridge is reduced, and the intermediate piers sustain less lateral force and displacement. Then, the sectional member forces are well controlled in the intermediate piers by a proper application of the end-restraining abutments.

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SSI‐induced seismic earth pressures on an integral abutment bridge model: Experimental measurements versus numerical simulations and code provisions

Fiorentino,

De Risi,

De Luca

et al. 2024

Earthq Engng Struct Dyn

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Integral abutment bridges (IABs) generate strong soil–structure interaction (SSI) effects due to their high structural stiffness and transmission of inertial and thermal loads generated at the deck directly to the abutments. Despite an increasing number of experimental and numerical studies available in the literature, there is a lack of consolidated methodologies to model dynamic SSI phenomena for IABs, particularly in seismic regions where uncertainties associated with the induced ground motions render the problem harder to tackle. This study proposes an advanced strategy to model the seismic response of IABs, accounting for dynamic interaction between the structure, the abutment and the foundation, including piles and earth retaining walls. To this end, detailed finite‐element studies were carried out employing OpenSees to simulate a recent experimental campaign on a scaled IAB model in a soil container (SERENA) carried out at EQUALS Lab, University of Bristol, in the framework of SERA/H2020 project. An extensive dataset in terms of recorded accelerations, displacements, strains and settlements are available from these tests, including earth pressures which are back‐calculated from bending strain measurements. The objectives of this paper are threefold: firstly, the model parameters are explored and assessed critically by comparing the results from the numerical simulations against the experimental data; secondly, once the model is deemed sufficiently representative of the experiments, earth pressures are obtained numerically, as these are not directly measured in the tests; thirdly, the estimated static and dynamic earth pressures on the abutment wall are compared with the predictions of two simplified analytical procedures currently under consideration for inclusion in the new Eurocode 8. The results indicate that records and predictions match well for frequencies of up to 40 Hz at model scale (about 8 Hz in prototype scale) and confirm that the proposed modelling strategy can be used in practical applications. The quasi‐elastic model proposed in this study is shown to provide dependable predictions for cases involving moderate strains in real‐life applications.

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Seismic modeling of integral abutment bridges in Illinois

Cited by 32 publications

References 20 publications

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Seismic Performance Evaluation of a Fully Integral Concrete Bridge with End‐Restraining Abutments

SSI‐induced seismic earth pressures on an integral abutment bridge model: Experimental measurements versus numerical simulations and code provisions

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