Effects of cyclic strain hardening on performance of eccentrically braced frames

Date

2021-12-01

Author

Balıkçı, Elif Müge
Topkaya, Cem

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

275
views

0
downloads

Performance based seismic design (PBSD) procedures have been developed in recent years. Studies conducted in the past revealed that strain hardening ratio (SHR) used in numerical modeling can be influential on the performance of steel structural systems. In this paper, the effects of SHR on the performance assessment of eccentrically braced frame (EBF) buildings were studied by using FEMA P-58 methodology. The numerical model was validated using the pseudo-dynamic test results of the DUAREM structure. Seismic performance of six archetype EBFs with different number of stories and link length to bay width (e/L) ratios were evaluated under design basis earthquake (DBE), maximum considered earthquake (MCE), and collapse level earthquake (CLE). Irreparable residual drift, repair cost and unsafe placards were calculated for SHR ranging between 0 and 0.01. The results showed that the residual interstory drift ratio is more influenced by the SHR when compared with the interstory drift ratio, link rotation angle and story acceleration. The replacement decision was found to depend on the SHR, the number of stories, the e/L ratio, and the seismic hazard. Under MCE and CLE level events, almost all of the archetypes with SHR ≤ 0.003 required replacement while replacement can be avoided for some of the archetypes with SHR > 0.003. Under DBE level events, 3-story archetypes and 6-story archetypes with SHR ≥ 0.002 did not require replacement. Nine-story archetype with e/L = 0.08 required replacement for SHR = 0 only, while archetypes with e/L = 0.12 required replacement for SHR ≤ 0.003. The study demonstrated the strong influence and sensitivity of the repair cost to the SHR.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85114940434&origin=inward
https://hdl.handle.net/11511/94164

Journal

Journal of Constructional Steel Research

DOI

https://doi.org/10.1016/j.jcsr.2021.106948

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Effects Of Mandrel Shank Positions And The Gap Values Between The Mandrel Balls And The Tube On The Thinning And The Ovality İn Rotary Draw Bending Ozcan, Bahadir; Evis, Zafer; ÖZTÜRK, FAHRETTİN (2022-1-01) Tube and tube systems are very critical components to fulfill the design requirement of applications. Especially the bending radius is most important factor in a tube bending process. Therefore, as the bend ratio (bending radius/outer diameter of tube) and the wall thickness of the tube material decrease, the risk of encountering defects such as wrinkles, ovality, wall thinning, and crack increases. Rotary draw bending process is generally preferred for bending tubes with a small bend ratio and thin wall th...
Effect of annealing on the mechanical properties of pla parts produced by fused filament fabrication Aydın, Sencer; Özerinç, Sezer; Department of Micro and Nanotechnology (2021-9-01) Additive manufacturing has become a disruptive technology for the production of load bearing components in a wide range of applications. Fused filament fabrication (FFF) is among the most effective and economical techniques for the printing of polymeric parts. There are numerous thermoplastic materials suitable for FFF. Among these, Polylactic acid (PLA) is a renewable, sustainable and cost-effective alternative. For better utilization of PLA parts produced by FFF, there is a need to understand the structur...
Effects of sensitivity derivatives on aerodynamic design optimization Eyi, Sinan (Informa UK Limited, 2007-10-01) The effects of sensitivity derivatives on the performance of aerodynamic design optimization were evaluated. Sensitivity derivatives were obtained by both analytical and finite-difference approaches. A sensitivity code was developed to analytically obtain sensitivity derivatives for the two-dimensional Euler equations using the material derivative concept of continuum mechanics. Several inverse design optimizations were performed to evaluate the merits of the analytical approach in comparison with the finit...
The Development and Performance Characterization of Turbine Prototypes for a MEMS Spirometer GOREKE, Utku; HABİBİABAD, Sahar; Azgın, Kıvanç; Serinağaoğlu Doğrusöz, Yeşim; Beyaz, Mustafa Ilker (2016-02-01) The design, optimization, and performance characterization of turbine prototypes for the development of a Microelectromechanical Systems spirometer is reported. Four different turbines were designed based on large-scale Savonius turbine architecture. The number of turbine blades was optimized through finite-element simulations to maximize the induced moment and rotational speed at normal breathing flow rates. The turbines were manufactured and tested for their speed performance with respect to input flow ra...
Influence of idealized pushover curves on seismic response Kadaş, Koray; Yakut, Ahmet; Department of Civil Engineering (2006) Contemporary approach performance based engineering generally relies on the approximate procedures that are based on the use of capacity curve derived from pushover analysis. The most important parameter in the displacement-based approach is the inelastic displacement demand computed under a given seismic effect and the most common procedures employed for this estimation; the Capacity Spectrum Method and the Displacement Coefficient Method are based on bi-linearization of the capacity curve. Although there ...

Citation Formats

E. M. Balıkçı and C. Topkaya, “Effects of cyclic strain hardening on performance of eccentrically braced frames,” Journal of Constructional Steel Research, vol. 187, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85114940434&origin=inward.