Probabilistic Seismic Response Models for Risk Assessment and Design of Steel Moment Frames with Linear Viscous Dampers

Dadpour, Omid; Banazadeh, Mehdi

doi:10.1193/031117eqs046m

Cited by 8 publications

(5 citation statements)

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“…Typically,

C_{damage}

is a function of design variables and inter‐story drift (

italicdrift

). Several formulations are offered in the literature [ 13–16 ] that drift should be given as the input of

C_{damage}

. This paper aims at using Equation 2 for optimally designing of the steel moment structures by reflecting the uncertainty related to earthquake intensity in the structures' location.…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…The spectral acceleration at the fundamental period (

Sa ((), {normalT}_{1})

) is conventionally accepted for low to midrise buildings up to 12‐story. [ 15 ] Although the participation of higher modes in order to design the 18‐story structure gives a more robust design, since the purpose of this paper is to review the abovementioned methodology and in order to reduce computational costs due to optimization, only the spectral acceleration at the first mode is considered here.…”

Section: Numerical Studiesmentioning

confidence: 99%

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Seismic loss optimum design of steel structures using learning‐based charged system search

Motamedi

Banazadeh

Talatahari

2022

Structural Design Tall Build

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One of the structural engineers' challenges on a regular basis is balancing the expense of initial construction with the cost of future structural loss. At first appearance, employing the optimization method seems to be a viable option. However, since both the structure's analysis and design, as well as the computation of the cost of future loss, are time-consuming and expensive, combining these processes with the costly optimization progression is prohibitively expensive. The purpose of this study is to present a methodology for the risk-based optimum design of steel frame structures, as well as to enhance a previously published metaheuristic algorithm for a better optimization approach. The methodology given here allows structural designers to account for seismic risks in the design optimization process without incurring expensive computing expenditures. This approach may be appealing for practical work since it minimizes time-consuming charges and provides designers with a structural impression. Furthermore, as compared to the standard version, the new optimization algorithm improves performance while decreasing computing costs.Bayesian linear regression is used in conjunction with a parameter identification challenge to derive probabilistic models for estimating structural analysis demand responses. The minimum amount of total initial cost and seismic loss cost is regarded as the objective function of the design of three chosen mid-to high-rise moment frames for the optimization purpose. The results demonstrated enhanced optimization performance as well as a decreased loss cost for employed structures.

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“…Typically,

C_{damage}

is a function of design variables and inter‐story drift (

italicdrift

). Several formulations are offered in the literature [ 13–16 ] that drift should be given as the input of

C_{damage}

. This paper aims at using Equation 2 for optimally designing of the steel moment structures by reflecting the uncertainty related to earthquake intensity in the structures' location.…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…The spectral acceleration at the fundamental period (

Sa ((), {normalT}_{1})

Section: Numerical Studiesmentioning

confidence: 99%

Seismic loss optimum design of steel structures using learning‐based charged system search

Motamedi

Banazadeh

Talatahari

2022

Structural Design Tall Build

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“…Within the class of high performance dissipaters that are increasingly adopted in seismic retrofit of building structures (Sorace and Terenzi 2008;Foti et al 2010;Bergami and Nuti 2013;Foti and Nobile 2013;Mazza and Vulcano 2013;Palermo et al 2013;Weng et al 2013;Foti 2014;Mazza 2014Mazza , 2015Mazza , 2019Guo et al 2015;Hamidia et al 2015;Dall'Asta et al 2016;Dong et al 2016;Golzar et al 2016;Mazza et al 2017;Impollonia and Palmeri 2018;Bahmani and Zahrai 2019;Dadpour and Banazadeh 2019;De Domenico et al 2019;Sonda et al 2020), FV spring-dampers supply a very high dissipative action with small stiffening effects, which represents an effective property especially for rather stiff structures.…”

Section: Preliminary Evaluation Of the Energy Dissipation Demandmentioning

confidence: 99%

Activation control extension of a design method of fluid viscous dissipative bracing systems

Terenzi

Costoli

Sorace

2020

Bull Earthquake Eng

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Remarkable damage to non-structural elements and sometimes to structural members was surveyed in buildings retrofitted with dissipative bracing (DB) technologies recently hit by moderate-to-medium amplitude earthquakes. Damage is a consequence of the delayed contribution of protective systems to the seismic response of the buildings, caused by too high activation forces of dissipaters. In view of this, a sizing procedure for DB systems incorporating fluid viscous (FV) spring-dampers is implemented in this study. The procedure provides a simplified version of a recently proposed energy-based design criterion, and an extension of it by including a pre-evaluation of the activation force of the FV devices with respect to the normative Serviceability Design Earthquake (SDE)-related seismic demand. The sizing procedure is applied to the retrofit design of a demonstrative case study, represented by a school built in Italy in the early 1980s. Noticeable seismic vulnerabilities of the above-ground steel structure of the building are assessed in current conditions, highlighting local unsafety conditions of the profiles constituting the reticular steel columns starting from the SDE. A retrofit intervention consisting in the installation of a DB system equipped with FV spring-dampers is presented for the steel structure, designed by applying the proposed sizing method. The final verification time-history analyses confirm the activation of the FV devices at the SDE, and the attainment of the targeted elastic structural response up to the Maximum Considered Earthquake normative level.

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“…Wang et al (2018) studied the performance of ferromagnetic liquid dampers under low frequency vibration. Dadpour and Banazadeh (2019) used viscous dampers to analyze the seismic reliability of buildings. Ding et al (2018) studied a four-stage damping adjustable viscous shock absorber (used for vehicle shock absorption).…”

Section: Introductionmentioning

confidence: 99%

“…(2018) studied the performance of ferromagnetic liquid dampers under low frequency vibration. Dadpour and Banazadeh (2019) used viscous dampers to analyze the seismic reliability of buildings. Ding et al .…”

Section: Introductionmentioning

confidence: 99%

Seismic reduction principle and response analysis of variable damping viscous damper system

Liang,

Zhang,

2023

IJSI

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PurposeA new type of variable damping viscous damper is developed to meet the settings of different damping parameter values at different working stages. Its main principle and design structure are introduced, and the two-stage and multi-stage controllable damping methods are proposed.Design/methodology/approachThe theoretical calculation formulas of the damping force of power-law fluid variable damping viscous damper at elongated holes are derived, aiming to provide a theoretical basis for the development and application of variable damping viscous dampers. For the newly developed variable damping viscous damper, the dynamic equations for the seismic reduction system with variable damping viscous dampers under a multi-degree-of-freedom system are established. A feasible calculation and analysis method is proposed to derive the solution process of time history analysis. At the same time, a program is also developed using Matlab. The dynamic full-scale test of a two-stage variable damping viscous damper was conducted, demonstrating that the hysteresis curve is complete and the working condition is stable.FindingsThrough the calculation and analysis of examples, the results show that the seismic reduction effect of high and flexible buildings using the seismic reduction system with variable damping viscous dampers is significant. The program developed is used to analyze the seismic response of a broadcasting tower using a variable damping TMD system under large earthquakes. The results indicate that the installation of variable damping viscous dampers can effectively control the maximum inter-story displacement response of TMD water tanks and can effectively consume seismic energy.Originality/valueThis method can provide a guarantee for the safe and effective operation of TMD in wind and vibration control.

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Probabilistic Seismic Response Models for Risk Assessment and Design of Steel Moment Frames with Linear Viscous Dampers

Cited by 8 publications

References 40 publications

Seismic loss optimum design of steel structures using learning‐based charged system search

Seismic loss optimum design of steel structures using learning‐based charged system search

Activation control extension of a design method of fluid viscous dissipative bracing systems

Seismic reduction principle and response analysis of variable damping viscous damper system

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