Strength prediction of rotary brace damper using MLR and MARS

Mansouri, Iman; Safa, Maryam; Ibrahim, Zainah; Kisi, Özgür; Tahir, M. M.; Baharom, Shahrizan; Azimi, Mohammadamin

doi:10.12989/sem.2016.60.3.471

Cited by 71 publications

(14 citation statements)

References 32 publications

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“…Many studies show that the strategic removal of the materiel could prevent and postpone the brittle limit states, especially buckling, and promote the yielding mechanism [3]. The resulting replaceable fuse system is generally designed and implemented in highly seismic affected areas for increasing the whole system's energy dissipation [14,15]. The energy dissipation comparison of the structures with shear links could be more than 5 times larger than the conventional systems for a specific story under the seismic load condition [3].…”

Section: Introductionmentioning

confidence: 99%

Incremental Dynamic Analysis for Estimating Seismic Performance of Multi-Story Buildings with Butterfly-Shaped Structural Dampers

2019

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Structural strength and stiffness were previously investigated to sufficiently improve the lateral load resistance against major events. Many buildings require appropriate design to effectively withstand the lateral seismic loads and reduce the corresponding damages. Design methodologies and structural elements were recently introduced to improve the energy dissipation capability and limit the high force demands under seismic loadings. The new systems are designed to protect the structural integrity and concentrate the inelasticity in a specific area, while the remaining parts are kept undamaged and intact. This study introduces a new structural system with dampers having strategic cutouts, leaving butterfly-shaped shear dampers for dominating the yielding mechanism over other brittle limit states. The new system is designed for re-establishing the conventional eccentrically braced frame system with simple linking beams. The system with strategic cutouts is subsequently used and compared with the eccentrically braced frames (EBF) system for seismic performance investigation and incremental dynamic analysis (IDA), using the OpenSees program, which is used to indicate the collapse behavior under forty-four selected ground motions. Results show that the butterfly-shaped multi-story buildings, compared to the corresponding conventional systems, are capable of enhancing the system resistance against lateral seismic loads by postponing the collapse state to the larger drift ratio values.

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Section: Introductionmentioning

confidence: 99%

Incremental Dynamic Analysis for Estimating Seismic Performance of Multi-Story Buildings with Butterfly-Shaped Structural Dampers

2019

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“…Under severe earthquakes, the ductile behavior of the structural elements allows inelastic drifts leading to the overall system's energy dissipation capability (Farzampour and Eatherton 2018b;Luth et al 2008;Mansouri et al 2016b;Mirzai et al 2018Saffari et al 2013, Farzampour andYekrangnia 2014). In various structural applications, shear links could be implemented by strategic material removal to concentrate the inelasticity and damages in one part of the structure while the remaining parts are intact and undamaged (Atasever et al 2018;Farzampour and Eatherton 2018a;Kim et al 2016;Zeynali et al 2018.…”

Section: Introductionmentioning

confidence: 99%

Force–Displacement Relationship of the Butterfly-Shaped Beams Based on Gene Expression Programming

et al. 2020

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Structural steel plates with engineered cut-outs to exhibit controlled yielding mechanism is recently proposed for desirable structural performance compared to conventional systems.Butterfly-shaped beams with hexagonal cut-outs inside of the beam's web is implemented to better align the bending strength diagram along the link length with the corresponding demand shape of the applied moment diagram. In previous studies, it has been reported that these links have a substantial energy dissipation capability and sufficient ductility which necessities further investigations and structural behavior prediction studies. In this study, a set of 240 nonlinear finite element models are developed for creation of a database and subsequently calibrated with finite element software packages. The capability of the gene expression programming (GEP) is explored for prediction of force-displacement relationship of a butterfly-shaped beam. Two new models are developed based on the reliable generated database. Subsequently, the proposed models are validated with several conducted analysis and statistical parameters, for which the comparisons are shown in details. The results represent that the proposed models are able to predict the forcedisplacement relationship of a butterfly-shaped beam with satisfactory accuracy.

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“…Constructions have played a significant role in infrastructures and shape the environment people live in. A growing demand on the structure and infrastructure adapted to an ever-changing social landscape has mainly raised the novelty of engineering materials (Mohammadhassani et al 2013, 2014b, Mansouri et al 2016, Hosseinpour et al 2018, Nasrollahi et al 2018, Sadeghipour Chahnasir et al 2018, Shahnazar et al 2018, Toghroli et al 2018b, Zhao et al 2018a. It also bring solutions to guarantee the optimum exploitation of resources, and foster more sustainable use of assets (Gerami et al 2008, Gholhaki et al 2008, Haddad 2008, Kheyroddin et al 2008, Sharbatdar et al 2008, Andalib et al 2018, Paknahad et al 2018, therefore, majority of studies have been conducted to determine the preference for familiarity or preference for novelty of structures (Ardalan et al 2009, Mohammadhassani et al 2013, 2014a, b, Mola-Abasi et al 2013, Eslami et al 2014, Toghroli et al 2014, Shahabi et al 2016, Toghroli et al 2018a.…”

Section: Introductionmentioning

confidence: 99%

Behavior of steel storage pallet racking connection - A review

Chen¹,

Shi²,

Shariati³

et al. 2019

Preprint

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Steel pallet racking industry has globally used from the industrial revolution and has deeply evolved from hot-rolled profile into cold-formed profile to raise the optimization in engineering field. Nowadays, some studies regarding cold-formed steel profile have been performed, but fewer studies in terms of cold-formed pallet racking specifically in connection due to the semi-rigid behavior by lug-hooked into the upright have been conducted. The objective of this study is to review the related literature on steel storage racking connection behavior.

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Strength prediction of rotary brace damper using MLR and MARS

Cited by 71 publications

References 32 publications

Incremental Dynamic Analysis for Estimating Seismic Performance of Multi-Story Buildings with Butterfly-Shaped Structural Dampers

Incremental Dynamic Analysis for Estimating Seismic Performance of Multi-Story Buildings with Butterfly-Shaped Structural Dampers

Force–Displacement Relationship of the Butterfly-Shaped Beams Based on Gene Expression Programming

Behavior of steel storage pallet racking connection - A review

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