Transition Slabs of Integral Abutment Bridges

Dreier, Damien; Burdet, Olivier; Muttoni, Aurelio

doi:10.2749/101686611x12994961034174

Cited by 14 publications

(13 citation statements)

References 6 publications

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“…For concrete bridges, shrinkage causes shortening of the bridge, as does creep in prestressed concrete bridges [8], [9], [10]. On one side the amplitude of the displacements at the bridge end is proportional to its distance from the fixed point; on the other side it is proportional to the total longitudinal strain resulting from temperature, shrinkage and creep [6]. Although the temperature of the bridge changes constantly, the amplitude of daily longitudinal movements is clearly smaller than that of the seasonal cycles.…”

Section: Bridge Movementsmentioning

confidence: 99%

“…It also helps to distribute the strains in the soil, which can lead to the formation of transverse surface dips when the bridge contracts, or bumps when the bridge expands, which reduce the comfort of the ride (Fig. 3) [6].…”

Section: Solutions For the Design Of Transition Slabs For Integral Brmentioning

confidence: 99%

“…Most publications on this subject are either of an analytical nature [6], [7], [8], [9] or are based on field measurements of the actual performance of recently built integral bridges [10], [11], [12]. A few authors report on the actual behaviour of the road surface in service [3], [13], [14], [15].…”

Section: Experimental Investigation Of Soil-structure Interaction Formentioning

confidence: 99%

“…The aim of the analytical research reported in [6] was to discover the maximum length possible for a bridge built without expansion joints, without detrimental effects on its behaviour. The main criterion used in the study was limiting the perceived effect of the surface bumps or dips at the end of the transition slab.…”

Section: Experimental Investigation Of Soil-structure Interaction Formentioning

confidence: 99%

“…In particular, the influence of the buried depth at the end of the transition slab was varied in order to assess the conclusion by Dreier [6] that an increase in the buried depth allows for larger bridge movements.…”

Section: Objective Of the Researchmentioning

confidence: 99%

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Experimental investigation of soil‐structure interaction for the transition slabs of integral bridges

Burdet

Einpaul

Muttoni

2015

Structural Concrete

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This paper presents the results of an experimental test series carried out to investigate the soil‐structure‐pavement interaction in the vicinity of the transition slab at the end of an integral bridge. The main function of transition slabs is to ease the transition between the bridge deck and the embankment in the case of differential settlement. Additionally, in the case of integral bridges, transition slabs can solve the problem of moderate imposed longitudinal deformations at the bridge ends. In this case the displacements imposed on the transition slab can lead to vertical and longitudinal surface displacements and to cracking of the pavement. Based on the observed behaviour, some recommendations are proposed for the geometry and surface conditions in order to optimize the behaviour of transition slabs.

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Section: Bridge Movementsmentioning

confidence: 99%

Section: Solutions For the Design Of Transition Slabs For Integral Brmentioning

confidence: 99%

Section: Experimental Investigation Of Soil-structure Interaction Formentioning

confidence: 99%

Section: Experimental Investigation Of Soil-structure Interaction Formentioning

confidence: 99%

Section: Objective Of the Researchmentioning

confidence: 99%

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Experimental investigation of soil‐structure interaction for the transition slabs of integral bridges

Burdet

Einpaul

Muttoni

2015

Structural Concrete

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Integral abutment bridges: Investigation of seismic soil‐structure interaction effects by shaking table testing

Fiorentino

Cengiz

Luca

et al. 2020

Earthq Engng Struct Dyn

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In recent years there has been renewed interest on integral abutment bridges (IABs), mainly due to their low construction and maintenance cost. Owing to the monolithic connection between deck and abutments, there is strong soil‐structure interaction between the bridge and the backfill under both thermal action and earthquake shaking. Although some of the regions where IABs are adopted qualify as highly seismic, there is limited knowledge as to their dynamic behaviour and vulnerability under strong ground shaking. To develop a better understanding on the seismic behaviour of IABs, an extensive experimental campaign involving over 75 shaking table tests and 4800 time histories of recorded data, was carried out at EQUALS Laboratory, University of Bristol, under the auspices of EU‐sponsored SERA project (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The tests were conducted on a 5 m long shear stack mounted on a 3 m × 3 m 6‐DOF earthquake simulator, focusing on interaction effects between a scaled bridge model, abutments, foundation piles and backfill soil. The study aims at (a) developing new scaling procedures for physical modelling of IABs, (b) investigating experimentally the potential benefits of adding compressible inclusions (CIs) between the abutment and the backfill and (c) exploring the influence of different types of connection between the abutment and the pile foundation. Results indicate that the CI reduces the accelerations on the bridge deck and the settlements in the backfill, while disconnecting piles from the cap decreases bending near the pile head.

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On the seismic performance of straight integral abutment bridges: From advanced numerical modelling to a practice‐oriented analysis method

Marchi

Gallese

Gorini

et al. 2022

Earthq Engng Struct Dyn

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The seismic performance of integral abutment bridges (IABs) is affected by the interaction with the surrounding soil, and specifically by the development of interaction forces in the embankment‐abutment and soil‐piles systems. In principle, these effects could be evaluated by means of highly demanding numerical computations that, however, can be carried out only for detailed studies of specific cases. By contrast, a low‐demanding analysis method is needed for a design‐oriented assessment of the longitudinal seismic performance of IABs. To this purpose, the present paper describes a design technique in which the frequency‐ and amplitude‐dependency of the soil‐structure interaction is modelled in a simplified manner. Specifically, the method consists of a time‐domain analysis of a simplified soil‐bridge model, in which soil‐structure interaction is simulated by means of distributed nonlinear springs connecting a free‐field ground response analysis model to the structural system. The results of this simplified method are validated against the results of advanced numerical analyses, considering different seismic scenarios. In its present state of development, the proposed simplified nonlinear model can be used for an efficient evaluation of the longitudinal response of straight IABs and can constitute a starting point for a prospective generalisation to three‐dimensional response.

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Transition Slabs of Integral Abutment Bridges

Cited by 14 publications

References 6 publications

Experimental investigation of soil‐structure interaction for the transition slabs of integral bridges

Experimental investigation of soil‐structure interaction for the transition slabs of integral bridges

Integral abutment bridges: Investigation of seismic soil‐structure interaction effects by shaking table testing

On the seismic performance of straight integral abutment bridges: From advanced numerical modelling to a practice‐oriented analysis method

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