Seismic Restrainer Design Methods for Simply Supported Bridges

Saiidi, M. Saiid; Randall, Matt; Maragakis, Emmanuel M.; Isaković, Tatjana

doi:10.1061/(asce)1084-0702(2001)6:5(307)

Cited by 54 publications

(22 citation statements)

References 3 publications

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“…The foundation springs were provided by the geotechnical report. The passive resistance of the abutments due to embankment mobilization was simulated according to Shamsabadi guidelines [12], [13] and the HyperbolicGap compression material was used in OpenSees, Fig 7(b). The sliding Bearing were modeled as shown in Fig 7(c).…”

Section: Description Of the Reference Bridgementioning

confidence: 99%

Analytical and Experimental Study on the Response of a Seismic Restrainer System for Bridges

Markogiannaki¹,

Tegos²

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Section: Description Of the Reference Bridgementioning

confidence: 99%

Analytical and Experimental Study on the Response of a Seismic Restrainer System for Bridges

Markogiannaki¹,

Tegos²

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…The above model was used to simulate the impact of girder and restraining devices and the impact force is given in Eq. (1) [10,11]:…”

Section: Contact and Impact Elementsmentioning

confidence: 99%

Effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge

Wang¹,

Zhu²,

Chen³

2014

Frattura Ed Integrità Strutturale

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ABSTRACT. During an earthquake, the nonlinearity of the bridge structure mainly occurs at the supports, bridge piers and restrainers. When entering nonlinear stage, members of the bridge structure affect the elasto-plastic seismic response of the whole structure to a certain extent; for multi-span continuous bridges, longitudinal restrainers can be installed on the movable piers to optimise the distribution of seismic force and enable the movable piers to bear a certain amount of seismic effect. In order to evaluate the effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge, analytical models of continuous girder bridge structure considering the nonlinearity of movable supports, restrainers and bridge piers were built and the nonlinear time history analysis was conducted to evaluate the effect of nonlinearity of restraining devices and supports on the elasto-plastic seismic response of continuous girder bridge. Relevant structural measures and recommendation were made to reduce the seismic response of the fixed piers of the continuous girder bridge.

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“…As a result, these bridges have suffered the most damage in past earthquakes (Dicleli and Bruneau 1995). One of the most frequent modes of failure of these bridges was the unseating of their simply supported spans (Saiidi et al 2001). The problem becomes more intense when the gaps between the sequential segments close and high impact forces are induced at the interacting spans (Saadeghvaziri and Yazdani-Motlagh 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Cable restrainers are placed across movement joints to reduce potential for unseating (American Association of State Highway and Transportation Officials (AASHTO) 2001, California Department of Transportation (CalTrans) 2004). These restrainers are utilised to connect the adjacent segments of the deck as well as the deck with the piers or the abutments (Saiidi et al 2001, procedures (Roberts 2005, Buckle et al 2006b 2006, California Department of Transportation (CalTrans) 2008) account for seismic response of adjacent segments. DesRoches and Delemont (2002) also introduced the use of shape memory alloys to reduce the relative displacements of adjacent segments of the bridge.…”

Section: Introductionmentioning

confidence: 99%

A new scheme for the seismic retrofit of multi-span simply supported bridges

Mitoulis

Tegos

Stylianidis

2013

Structure and Infrastructure Engineering

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There are two alternative strategies that a designer may adopt and combine when faced with the retrofitting of a bridge: (a) the increase in the capacity or (b) the reduction in the actions of the structure. In this article, a new scheme, based on the second strategy, is proposed for the retrofit of existing multi-span simply supported (MSSS) bridges. The reduction in the actions of the bridge was mainly achieved by utilising an external restraining system consisting of I-shaped steel piles driven in the backfill soil and a slab that is the pile-cap of the piles. The restraining system was preliminarily designed and assessed in an existing MSSS bridge system, whose deck slab was made continuous. The existing and the retrofitted bridge were analysed by means of non-linear dynamic time history analysis and their response was compared in terms of serviceability and earthquake resistance performance. The study showed that the retrofitting scheme enhanced effectively the earthquake resistance of the existing bridge. © 2013 Copyright Taylor and Francis Group, LLC

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Seismic Restrainer Design Methods for Simply Supported Bridges

Cited by 54 publications

References 3 publications

Analytical and Experimental Study on the Response of a Seismic Restrainer System for Bridges

Analytical and Experimental Study on the Response of a Seismic Restrainer System for Bridges

Effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge

A new scheme for the seismic retrofit of multi-span simply supported bridges

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