Integral abutment bridges (IABs) are jointless bridges where the girder or the deck is continuous and monolithically connected to the abutments. A usual and important problem in the design of IABs is how to deal with the soil-structure interaction behind the abutments and next to the foundation piles: this can be considered as a fundamental aspect to reach a thorough understanding of this type of structure, which requires iterative and nonlinear analysis. In this paper, a 2D simplified finite-element model of a real 400-metre-long IAB, built in the Province of Verona-Italy, is implemented and used to perform non-linear analyses on the bridge, the structural response of which is then examined in detail. A parametric study based on the variation of the soil properties behind the back-walls and around the piles is then performed. Furthermore, a temperature pushover analysis (non linear static analysis for positive and negative temperature variations) is carried out to assess the failure pattern of the bridge caused by a temperature change, considered as one of the key parameters in IAB design. Lastly, the effect of abutment stiffness is also discussed. © 2010 Elsevier Ltd.

Parametric and pushover analyses on integral abutment bridge / Briseghella, Bruno. - In: ENGINEERING STRUCTURES. - ISSN 0141-0296. - 33:2(2011), pp. 502-515. [10.1016/j.engstruct.2010.11.009]

Parametric and pushover analyses on integral abutment bridge

briseghella
2011-01-01

Abstract

Integral abutment bridges (IABs) are jointless bridges where the girder or the deck is continuous and monolithically connected to the abutments. A usual and important problem in the design of IABs is how to deal with the soil-structure interaction behind the abutments and next to the foundation piles: this can be considered as a fundamental aspect to reach a thorough understanding of this type of structure, which requires iterative and nonlinear analysis. In this paper, a 2D simplified finite-element model of a real 400-metre-long IAB, built in the Province of Verona-Italy, is implemented and used to perform non-linear analyses on the bridge, the structural response of which is then examined in detail. A parametric study based on the variation of the soil properties behind the back-walls and around the piles is then performed. Furthermore, a temperature pushover analysis (non linear static analysis for positive and negative temperature variations) is carried out to assess the failure pattern of the bridge caused by a temperature change, considered as one of the key parameters in IAB design. Lastly, the effect of abutment stiffness is also discussed. © 2010 Elsevier Ltd.
33
2
502
515
Parametric and pushover analyses on integral abutment bridge / Briseghella, Bruno. - In: ENGINEERING STRUCTURES. - ISSN 0141-0296. - 33:2(2011), pp. 502-515. [10.1016/j.engstruct.2010.11.009]
Briseghella, Bruno
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1287389
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