Full‐scale hybrid test for realistic verification of a seismic upgrading technique of RC frames by BRBs

Qie, Yi; Barbagallo, Francesco; Marino, Edoardo M.; Du, Chunbo; Wang, Tao

doi:10.1002/eqe.3312

Cited by 13 publications

(4 citation statements)

References 27 publications

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“…Pseudodynamic testing, also called hybrid testing, is considered as an effective research technique to study the structural performance under seismic loading [1][2][3][4][5][6][7][8]. e procedure of a pseudodynamic test contains numerical calculation, loading control and response measurement.…”

Section: Introductionmentioning

confidence: 99%

Study on the Stabilities of RTH Tests Using the CDM Method considering Two Kinds of Systematic Errors

Peng

Guan

Liang

2022

Security and Communication Networks

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Real-time hybrid (RTH) test is a promising test method to investigate seismic responses of structures and is essentially a time history analysis. Therefore, an in-depth understanding of the control algorithm, such as a central difference method (CDM), is important for this method. In this paper, stabilities of the CDM considering two kinds of errors are investigated theoretically and experimentally. It turns out that the convergence criterion of the CDM cannot be changed by constant errors but can be changed by proportional errors. The lowest structural natural period to keep the results stable increases with the increase of the ratio of the displacement error to the interface displacement and the integration time step. At last, the theoretical result of the stability of the CDM considering two kinds of systematic errors are confirmed by the proposed test system with a natural rubber bearing.

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Section: Introductionmentioning

confidence: 99%

Study on the Stabilities of RTH Tests Using the CDM Method considering Two Kinds of Systematic Errors

Peng

Guan

Liang

2022

Security and Communication Networks

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“…The performance of concrete structures strengthened with BRBs was evaluated in 2020, considering the demand hazard plots and performing stability analysis. The results revealed the effect of BRB and infill walls on the seismic performance of different components and the impact of strengthening with BRB on a full-scale structure [25]. Pahlavan et al [26] investigated the fragility curves of RC structures equipped with BRB members.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Seismic Performance Assessment of Tall RC Special Moment-resisting Frame Buildings Equipped with Buckling-restrained Braces under Near-field Excitations

Zarif Moghadam Basefat,

Pahlavan,

Shafaie

2024

Period. Polytech. Civil Eng.

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Many tall buildings have already been constructed near faults throughout the world, several of which have sustained casualties and economic losses during strong ground motions. This study investigates the effect of near-fault excitations on the vulnerability of tall, reinforced concrete (RC) special moment-resisting frame (SMRF) buildings equipped with buckling-restrained braces (BRBs) using seismic fragility curves. After attaining the structure’s response modification factor (R), three-dimensional (3D) models of 15-, 25- and 35-story frames were developed by the OpenSees software according to the Iranian code provisions. Thus, the seismic response of the elements was obtained. Subsequently, incremental dynamic analysis (IDA) was conducted by selecting a suitable number of compatible accelerograms in two near-field and far-field groups. Considering the maximum story drift as the demand parameter and selecting the interstory drift ratios (IDR) for the slight, moderate, extensive, and complete collapse seismic performance levels proposed by Hazus, IDA curves were plotted. Then, the seismic fragility curves were produced using the structural reliability relations. The median fragility at complete collapse damage level reduced from 0.73g, 0.62g, and 0.61g to 0.68g, 0.59, and 0.57g for the 15-, 25, and 35-story near-field and far-field earthquake models, respectively. This was attributed to increasing vulnerability and seismic fragility of the structures as a result of both height increase and distance reduction from fault. Based on the results, the most vulnerable structure, i.e., the 35-story near-fault model, experienced a 40, 17, 18, and 6% increase in median fragility at slight, moderate, extensive, and complete collapse damage levels, respectively.

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“…The use of passive devices could be advantageous due to low-invasiveness and reduced installation time [4,5], compared to more traditional seismic retrofitting strategies [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Slip Force in a Novel Friction-Based Connection for the E-CLT Technology

Aloisio¹,

Boggian²,

Tomasi³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Full‐scale hybrid test for realistic verification of a seismic upgrading technique of RC frames by BRBs

Abstract: Scientific research proposing any type of device/technique for seismic protection of buildings is generally based on numerical models that adopt simplifica

Cited by 13 publications

References 27 publications

Study on the Stabilities of RTH Tests Using the CDM Method considering Two Kinds of Systematic Errors

Study on the Stabilities of RTH Tests Using the CDM Method considering Two Kinds of Systematic Errors

Probabilistic Seismic Performance Assessment of Tall RC Special Moment-resisting Frame Buildings Equipped with Buckling-restrained Braces under Near-field Excitations

Optimization of the Slip Force in a Novel Friction-Based Connection for the E-CLT Technology

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