Performance-Based Seismic Design of Steel Buildings Using Rigidities of Connections

Gaxiola‐Camacho, J. Ramon; Haldar, Achintya; Azizsoltani, Hamoon; Valenzuela-Beltran, Federico; Reyes‐Salazar, Alfredo

doi:10.1061/ajrua6.0000943

Cited by 19 publications

(4 citation statements)

References 28 publications

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“…Since the mathematical model will represent the actual sea states, it is expected to be acceptable to the engineering community. At present, the reliability analyses of both onshore and offshore structures are expected from the engineering profession so that communities are not exposed to unacceptable risk [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Uncertainty Quantification of Sea Waves - An Improved Approach

Haldar¹

2019

OFOAJ

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Section: Introductionmentioning

confidence: 99%

Uncertainty Quantification of Sea Waves - An Improved Approach

Haldar¹

2019

OFOAJ

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“…that one of the most important parts of the PBSD philosophy is the establishment of performance levels [20]. This is discussed in the following section.…”

Section: Pbsd Philosophymentioning

confidence: 99%

“…In most of the cases, the performance capability evaluation is done with software based on the finite element method. Within this context, it is widely reported that one of the most important parts of the PBSD philosophy is the establishment of performance levels [20]. This is discussed in the following section.…”

Section: Pbsd Philosophymentioning

confidence: 99%

Structural reliability of steel buildings with X‐bracing systems considering the performance‐based seismic design philosophy

Gutierrez‐Lopez,

Alvarado‐Valle,

Tolentino

et al. 2023

Applied Research

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The main objective of this paper is to study and compare the structural reliability of steel moment resisting frames (SMRFs) and steel frames with X‐bracing systems considering the performance‐based seismic design (PBSD) philosophy. In this sense, to accomplish such a study, nonlinear response history analysis is implemented. The buildings under consideration are designed to be located in Culiacan, Mexico. The results are presented in terms of overall displacements, rotations of connections, and interstory drifts, for three performance levels: (1) immediate occupancy, (2) life safety, and (3) collapse prevention, respectively. For each performance level, 11 ground motions were selected to study the response of the structures. Such responses were extracted by using the SAP2000 commercial software to perform structural analysis. It was demonstrated that the steel frame with X‐bracing systems developed a better seismic performance than SMRFs for all three variables under consideration. In addition, it was found that a reduction up to 70% in overall displacements and interstory drifts can be achieved when X‐bracing systems are used in steel structures. The risk of the structures was extracted in terms of reliability index and probability of failure considering probability density functions of interstory drifts. It was demonstrated that reliability index increased for structures with X‐bracing systems in comparison with SMRFs. Finally, in terms of costs, steel structures with X‐bracing systems are more expensive than SMRFs. However, its use is justified because serviceability conditions as overall displacement and interstory drift are considerably reduced.

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“…Innovative solutions for semi-rigid joints have recently been studied by Saberi et al, with a rehabilitation approach using post-tensioned tendons in a weak EP connection [150] and by Gaxiola-Camacho et al, who assessed an economical, flexible joint using a PBSD procedure [151]. However, we must note that while the latter is proposed by its authors as a daily approach for practicing engineers, the realistic assessment of joints' rigidity is paramount and may be difficult to attain for the complete set of connections within a design endeavour.…”

Section: Partial Strength and Semi-rigid Moment Connectionsmentioning

confidence: 99%

Seismic Design of Bolted Connections in Steel Structures—A Critical Assessment of Practice and Research

et al. 2022

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The importance of connections in steel structures is paramount, not only because it greatly influences the cost of construction and provides room for innovations, but also due to the connections’ impact on global structural behaviour. Therefore, research into innovative connections for seismic applications and related design criteria has significantly grown in recent years. However, it has been pursued mostly on local—connection or frame—levels, leaving the system analysis and code compliance levels with a meagre investigation. Moreover, less than 1% of published papers concerning steel connections and earthquake engineering are review articles. To overcome this gap, this systematic review of more than 240 references, including scientific contributions and design codes in the field aimed to cover both recent research and current shortcomings in practice and regulations. It has been found that European design rules updated to a fully performance-based design philosophy is imminent and is deemed to bring pre-qualified joints and increased complexity. Design rules have been systematized, and current hindrances have been highlighted. A deeper look into research needs and trends showed that investigations in connections for concentrically X braced frames are still a necessity, while developments in self-centring and replaceable connections as well as in simple solutions for increasing damping are expected to modify how joints are designed, as soon as semi-rigid and partial strength connections are more easily allowed by design codes.

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Performance-Based Seismic Design of Steel Buildings Using Rigidities of Connections

Cited by 19 publications

References 28 publications

Uncertainty Quantification of Sea Waves - An Improved Approach

Uncertainty Quantification of Sea Waves - An Improved Approach

Structural reliability of steel buildings with X‐bracing systems considering the performance‐based seismic design philosophy

Seismic Design of Bolted Connections in Steel Structures—A Critical Assessment of Practice and Research

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