Seismic design and performance assessment of frame buildings reinforced by dual-phase steel

Žižmond, Jure (avtor), Dolšek, Matjaž (avtor)

To improve the durability and serviceability of reinforced concrete structures, different variants of dual-phase reinforcing steel were developed within the research project NEWREBAR. The investigated variant of the new material, termed DPD2 steel, has a specific microstructure that increases the corrosion resistance, but its yielding strength is less than that of Tempcore steel B500B. DPD2 steel has no yielding plateau, which is characteristic of conventional reinforcing steel. Thus, it was investigated whether the current building codes can be used to design earthquake-resistant concrete structures reinforced by DPD2 steel bars. For this reason, three multi-story reinforced concrete frame buildings were designed according to Eurocode by considering DPD2 steel and, for comparison reasons, Tempcore steel B500B. Based on the nonlinear model, which was validated by cyclic test of columns, the seismic performance of DPD2 buildings was found to be improved compared to those designed with conventional B500B reinforcing steel. This can mainly be attributed to the substantial strain hardening of the DPD2 steel, which increases the overstrength factor of the structure by about 10%. However, for the improved seismic performance, the amount of steel in DPD2 buildings had to be increased in the design by approximately 20–25% due to the smaller yield strength of DPD2 steel. Nevertheless, it was demonstrated that Eurocode 8 could be used to design earthquake-resistant frame building reinforced with dual-phase reinforcing steel DPD2.

• Jezik: Angleški jezik
• Ključne besede: dual-phase reinforcing steel, earthquake-resistant design, Tempcore reinforcing steel, reinforced concrete frames, seismic analysis, pushover analysis
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 24 str.
• Številčenje: Vol. 11, iss. 11, art. 4998
• PID: 20.500.12556/RUL-127294
• UDK: 624
• ISSN pri članku: 2076-3417
• DOI: doi.org/10.3390/app11114998
• COBISS.SI-ID: 65160707
• Datum objave v RUL: 02.06.2021

Gradivo je del revije

• Naslov: Applied sciences
• Skrajšan naslov: Appl. sci.
• Založnik: MDPI
• ISSN: 2076-3417
• COBISS.SI-ID: 522979353

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.06.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: dual-phase armaturno jeklo, potresnoodporno projektiranje, Tempcore armaturno jeklo, armiranobetonske okvirne stavbe, seizmična analiza, potisna analiza

Projekti

• Financer: EC - European Commission
• Program financ.: Research Fund for Coal and Steel
• Številka projekta: RFSR-CT-2015-00023

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0185
• Naslov: Potresno inženirstvo