An extension of an improved forced based design procedure for 3D steel structures
| Autor: | José Miguel Castro, Rita Peres, Rita Bento, Ricardo Bento |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Sequence
Serviceability (structure) Computer science business.industry 0211 other engineering and technologies Metals and Alloys Process (computing) 020101 civil engineering 02 engineering and technology Building and Construction Extension (predicate logic) Plan (drawing) Structural engineering 0201 civil engineering Nonlinear system Limit (mathematics) Ductility business 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Steel and Composite Structures. 22:1115-1140 |
| ISSN: | 1229-9367 |
| DOI: | 10.12989/scs.2016.22.5.1115 |
| Popis: | This paper proposes an extension of the Improved Forced Based Design procedure to 3D steel structures. The Improved Forced Based Design (IFBD) procedure consists of a more rational sequence of the design checks proposed in Eurocode 8 and involves a more realistic selection of the behaviour factor instead of selecting an empirical value based on the ductility class and lateral resisting system adopted. The design procedure was tested on a group of four 3D steel structures, composed by moment-resisting frames with three storeys height and the same plan configuration in all storeys. The plan configuration was defined in order to target lateral restrained or unrestrained systems as well as plan regular or irregular structures. The same group of structures was also designed according to the force-based process prescribed in Eurocode 8. The member sizes obtained through the two approaches were compared and the seismic performance was assessed through nonlinear static and time-history analyses. The limit states referred to structural and non-structural damage, considering the two levels design approach, which are the serviceability and the ultimate limit states, were examined. The results obtained reveal that the IFBD leads to more economical structures that still comply with the performance requirements prescribed in Eurocode 8. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|