Formulation of risk-targeted seismic action for the force-based seismic design of structures

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

A risk targeted design spectral acceleration and the corresponding seismic design action for the force based design of structures is introduced by means of two formulations. The first one called direct formulation utilizes the seismic hazard function at the site of the structure. Because the seismic action defined in the codes is often associated with a designated return period, an indirect formulation is also introduced. It incorporates a risk targeted safety factor that can be used to define a risk targeted reduction factor. It is shown that the proposed formulations give analogical results and provide an insight into the concept of the reduction of seismic forces for the force based seismic design of structures if the objective is defined by a target collapse risk. The introduced closed form solution for the risk targeted reduction factor can be used to investigate how the target collapse risk, the seismic hazard parameters, the randomness of the seismic action, and the conventional parameters (ie, the overstrength factor and the deformation and energy dissipation capacity) affect the seismic design forces in the case of force based design. However, collaborative research is needed in order to develop appropriate models of these parameters. In the second part of the paper, the proposed formulations are demonstrated by estimating the risk targeted seismic design action for a six storey reinforced concrete building. By verifying the collapse risk of the designed structure, it is demonstrated that the risk targeted seismic action, in conjunction with a conventional force based design, provided structure with acceptable performance when measured in terms of collapse risk.

• Jezik: Angleški jezik
• Ključne besede: earthquake engineering, structural engineering
• 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
• Poslano v recenzijo: 06.01.2019
• Datum sprejetja članka: 20.04.2019
• Datum objave: 02.06.2019
• Leto izida: 2019
• Št. strani: Str. 1406-1428
• Številčenje: Letn. 48, št. 12
• PID: 20.500.12556/RUL-114835
• UDK: 624.042.7
• ISSN pri članku: 0098-8847
• DOI: 10.1002/eqe.3206
• COBISS.SI-ID: 9012577
• Datum objave v RUL: 18.03.2020

Gradivo je del revije

• Naslov: Earthquake engineering & structural dynamics
• Skrajšan naslov: Earthquake eng. struct. dyn.
• Založnik: Wiley
• ISSN: 0098-8847
• COBISS.SI-ID: 25358592

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
• Začetek licenciranja: 18.03.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: potresno inženirstvo, gradbene konstrukcije