Extension of the hybrid force/displacement (HFD) seismic design method to 3D steel moment-resisting frame buildings

Tzimas, Angelos S.; Karavasilis, Theodore L.; Bazeos, Nikitas; Beskos, D.E.

doi:10.1016/j.engstruct.2017.06.013

Cited by 14 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Corresponding to the performance levels, the maximum interstory drift of the frame is compared to the target values of ASCE41-13 [39] in each iteration. e repeat operation continues until the expected values are reached and then stops [14]. e appropriate coefficient for different performance levels is calculated using the Bayesian method.…”

Section: Near-fault Recordsmentioning

confidence: 99%

“…e appropriate coefficient for different performance levels is calculated using the Bayesian method. is process is performed for a specific performance level based on the flowchart shown in Figure 4 for a single earthquake [14].…”

Section: Near-fault Recordsmentioning

confidence: 99%

“…ese formulae were also functions of the geometrical and design properties of the frames and derived on the basis of seismic response of 36 moment-resisting and 36 x-braced plane steel frames, under 84 ordinary seismic ground motions. Moreover, Tzimas et al [14] established a response databank and then utilized it for the development of empirical formulae providing the behavior factor as a function of the geometrical and dynamic characteristics of the 3D steel moment-resisting frame buildings. Consideration of higher mode (HM) and multidegree of freedom (MDOF) effects in extracting the R factor was studied by Siahpolo et al [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Empirical Correlation for Estimation of EBF Steel Frame Behavior Factor under Near-Fault Earthquakes Using the Genetic Algorithm

Razavi

Siahpolo

Adeli

2020

Journal of Engineering

View full text Add to dashboard Cite

The most important feature of the behavior factor is that it allows the structural designer to be able to evaluate the structural seismic demand, using an elastic analysis, based on force-based principles quickly. In most seismic codes, this coefficient is merely dependent on the type of lateral resistance system and is introduced with a fixed number. However, there is a relationship between the behavior factor, ductility (performance level), structural geometric properties, and type of earthquake (near and far). In this paper, a new and accurate correlation is attempted to predict the behavior factor (q) of EBF steel frames, under near-fault earthquakes, using the genetic algorithm (GA). For this purpose, a databank consisting of 12960 data is created. To establish different geometrical properties of models, 3−, 6−, 9−, 12−, 15, and 20− story steel EBF frames were considered with 3 different types of link beam, 3 different types of column stiffness, and 3 different types of brace slenderness. Using nonlinear time history under 20 near-fault earthquake, all models were analyzed to reach 4 different performance levels. 6769 data were used as GA training data. Moreover, to validate the correlation, 2257 data were used as test data for calculating mean squared error (MSE) and correlation coefficient (R) between the predicted values of (q) and the real values. In addition, the MSE and R were calculated for correlation in the train and test data. Also, the comparison of the response of maximum inelastic displacement of 5 stories EBF from the proposed correlation and the mean inelastic time-history analysis confirms the accuracy of the estimate relationship.

show abstract

Section: Near-fault Recordsmentioning

confidence: 99%

Section: Near-fault Recordsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A New Empirical Correlation for Estimation of EBF Steel Frame Behavior Factor under Near-Fault Earthquakes Using the Genetic Algorithm

Razavi

Siahpolo

Adeli

2020

Journal of Engineering

View full text Add to dashboard Cite

show abstract

“…These methods have an additional disadvantage of requiring a designed structure for adopting the SDOF representation for analysis, and thus they cannot be used for the design of new structures and are limited to the assessment and evaluation of the seismic performance of already existing structures. To combine the advantages of the FBD and DBD methods while still conforming to practical design formats and additionally minimize iterations, a group of researchers have proposed a "hybrid force/displacement based design" (HFDD) for design of steel frames and have developed the method over the past 15 years specifically for performancebased engineering applications [6][7][8][9][10]. The core idea of this methodology is that it starts by transforming target values of the inter-storey drift ratio (IDR), as an indicator of non-structural damage, to a target roof displacement, and then calculates the appropriate force reduction factor (FRF) required for limiting ductility demands to those of the estimated target roof displacement ductility.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Force/displacement Performance-based Seismic Design Procedure for RC Frames

ElKassas¹,

Sayed-Ahmed²,

Fahmy³

2020

World Congress on Civil, Structural, and Environmental Engineering

View full text Add to dashboard Cite

In this paper, the use of a recently proposed seismic design method called Hybrid force/displacement design is evaluated as an option for preliminary design of RC frames in the context of the latest framework for performance-based seismic design. A prototype RC frame is chosen as a design case study and is designed twice: using the traditional code method which is force-based and using the modified design procedure. The two designs are compared based on the number of iterations required, and the expected performance in reference to the results of nonlinear time-history analysis as the closest approximation of actual behaviour. It is concluded that the modified Hybrid method has higher efficiency and reliability in achieving targeted performance of RC frames, and thus is suitable for application in performance-based seismic design.

show abstract

“…Recently, the hybrid force/displacement (HFD) seismic design method, which follows the PBD philosophy, has been developed for steel plane and space frames by Karavasilis at al [13] and Tzimas et al [14,15]. This method appropriately combines advantages and eliminates or reduces disadvantages of both FBD and DBD seismic design methods.…”

Section: Introductionmentioning

confidence: 99%

A Performance-Based Hybrid Force-Displacement Seismic Design Method for Reinforced Concrete Structures

Pian¹,

Muho²,

Jiang³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

A performance-based hybrid force-displacement (HFD) seismic design method is proposed for three types of reinforced concrete structures, i.e., moment resisting frames, frame with infills and wall-frame dual systems. HFD is a force-based method which controls with high accuracy both structural and non-structural deformation limits, since, both limits are input variables for the initiation of the design. This is accomplished by constructing explicit empirical expressions for a behavior (strength reduction) factor, which incorporates target non-structural and structural deformation metrics such as inter-storey drift ratio and member plastic rotation. Use of this factor in conjunction with an elastic acceleration spectrum can produce designs in one-step, by just conducting a strength checking, since the deformation restrictions are automatically satisfied. Those expressions for the behavior factor in terms of target deformation metrics, number of storeys, column to beam strength ratios, beam to column and column-to-wall stiffness ratios, respectively, are derived through extensive parametrical studies involving non-linear dynamic analysis of the above appropriately modeled structures under 100 ground motions scaled for different deformation targets. The proposed HFD method is demonstrated and validated with realistic design examples, which show its advantages over the force-based design method of the European seismic design code, Eurocode 8.

show abstract

Extension of the hybrid force/displacement (HFD) seismic design method to 3D steel moment-resisting frame buildings

Cited by 14 publications

References 20 publications

A New Empirical Correlation for Estimation of EBF Steel Frame Behavior Factor under Near-Fault Earthquakes Using the Genetic Algorithm

A New Empirical Correlation for Estimation of EBF Steel Frame Behavior Factor under Near-Fault Earthquakes Using the Genetic Algorithm

A Hybrid Force/displacement Performance-based Seismic Design Procedure for RC Frames

A Performance-Based Hybrid Force-Displacement Seismic Design Method for Reinforced Concrete Structures

Contact Info

Product

Resources

About