Experimental validation of re-centring capability of eccentrically braced frames with removable links

Ioan, Adriana; Stratan, Aurel; Dubină, Dan; Poljanšek, Martin; Molina, J.M.; Fabio, Taucer; Pegon, P.; Sabău, Gabriel

doi:10.1016/j.engstruct.2016.01.038

Cited by 78 publications

(57 citation statements)

References 10 publications

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“…Figure 6. State of the specimen after the last test [3] The maximum link demand after PO1 test is of 0.075 rad (see Table 3), smaller than the acceptable criterion for this limit state adopted by FEMA356 [7], which is of 0.11 rad. After the DL test, the structure exhibited a low residual top displacement of 5 mm (0.05%), the maximum top displacement being 32 mm.…”

Section: System Testsmentioning

confidence: 84%

“…An experimental program was carried out at UPT, CEMSIG Research Centre, to determine cyclic performance of isolated bolted links [1][2] and another at the European Laboratory for Structural Assessment (ELSA) of the Joint Research Centre (JRC) in Ispra, Italy, to validate the proposed solution through a pseudo-dynamic testing campaign of a full-scale model of a dual EBF structure [3].…”

Section: System Descriptionmentioning

confidence: 99%

“…a) b) Figure 4. The test specimen: a) 3D view; b) plan layout [3] Steel structural components were designed in S355 grade steel, with two exceptions. Grade S460 steel was used for columns and links were designed from S235 steel grade.…”

Section: System Testsmentioning

confidence: 99%

“…The testing sequence on the mock-up in the reaction wall facility of ELSA consisted in pseudo-dynamic (PsD) tests, together with some monotonic and link replacement tests [3].…”

Section: System Testsmentioning

confidence: 99%

“…Figure 5. PO1 test results [3] Because after the DL test the structure exhibited low residual top displacement and low residual drifts were observed, the decision was to remove the first set of damaged links, by removing the bolts, on a level by level basis, starting from the lower level to the upper one. The low value of the residual top displacement from the end of the DL test decreased after the elimination of the damaged links.…”

Section: System Testsmentioning

confidence: 99%

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Design Criteria and Modelling of Re-Centring Dual Eccentrically Braced Frames

Stratan¹,

Chesoan²,

Dubină³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Section: System Testsmentioning

confidence: 84%

Section: System Descriptionmentioning

confidence: 99%

Section: System Testsmentioning

confidence: 99%

“…The testing sequence on the mock-up in the reaction wall facility of ELSA consisted in pseudo-dynamic (PsD) tests, together with some monotonic and link replacement tests [3].…”

Section: System Testsmentioning

confidence: 99%

Section: System Testsmentioning

confidence: 99%

See 3 more Smart Citations

Design Criteria and Modelling of Re-Centring Dual Eccentrically Braced Frames

Stratan¹,

Chesoan²,

Dubină³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Splice Connection Details for Eccentrically Braced Frame Replaceable Links

Bozkurt

Topkaya

2019

ce papers

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Eccentrically braced frames (EBFs) can be used as a lateral load resisting system in seismic prone regions. A typical EBF consists of links, beams, columns and braces. Links are the fuse members providing energy dissipation during an earthquake. After a seismic event, damaged links need to be replaced with the new ones to recover initial stiffness and ductility of the structure. A comprehensive experimental research program has been undertaken to develop new replaceable link details. One of the proposed details is based on splicing the beam outside of the link and braces. In this type of a replaceable link, both the bearing type and slip critical type connections can be employed with different levels of bolt pretension. Four nearly full scale EBFs with replaceable links were tested to study the effect of the type of connection and gap size adopted in splice connections. The results indicate that both the bearing and slip critical type of connections can be employed for the splice connections if the bolts are fully pre-tensioned and frictional faying surfaces are provided.

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High Strength Steel and Fuse Dissipative Solutions for Seismic Resistant Building Structures

Dubină¹

2021

ce papers

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The robustness of structures against severe seismic action is ensured by their global performance, in terms of ductility stiffness and strength, properly calibrated. The “plastic“ members of ductile Mild Carbon Steel ‐ MCS – (S235 to S355) will dissipate the seismic energy, acting as “structural fuses“, while the “elastic“ members, must be provided of adequate overstrength, to have the capacity to carry the supplementary stresses after the plastic hinges have been formed and the redistribution forces were occurred. For these elastic members, High Strength Steels (HSS), such as S460 to S690, might be used, provide them the necessary overstrength, without enhancing the stiffness, because that could unbalance the structural system. These structures, which combine HSS with MCS, are termed Dual‐Steel (DS). The braced frames can be equipped with detachable dissipative MCS members, which are acting as seismic fuses. In case of CBF, the fuses might be the Buckling Restrained Braces (BRB), while for EBF, the links could take this role. In case of MRF, Steel Plate Shear Walls (SW) can be used as fuses. To make possibly to replace the used fuses, the HSS elastic part of the structure, has the mission to re‐centring the structure after the earthquake. This is the subject of present paper.

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Experimental validation of re-centring capability of eccentrically braced frames with removable links

Cited by 78 publications

References 10 publications

Design Criteria and Modelling of Re-Centring Dual Eccentrically Braced Frames

Design Criteria and Modelling of Re-Centring Dual Eccentrically Braced Frames

Splice Connection Details for Eccentrically Braced Frame Replaceable Links

High Strength Steel and Fuse Dissipative Solutions for Seismic Resistant Building Structures

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