A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ω* method: An alternative to Eurocode 8 procedure for seismic design of X-CBFs
https://orcid.org/0000-0003-3197-0248
AbstractThe paper validates Ω* method proposed by some of the authors in previous papers for design of X-Concentric Braced Frames (X-CBFs). This method was obtained relaxing some of the requirements of the method provided by the European seismic code (Eurocode 8, EC8). Therefore, Ω* method is conceptually similar to that of EC8, which makes it easy to be incorporated into EC8 and to be embraced by the European structural designers. The paper analyses the seismic performance of a set of X-CBFs designed both according to EC8 and Ω* methods. Several buildings characterised by different numbers of storeys, numbers of bracings in plan and by different bay spans are considered. Non-linear dynamic analyses have been carried out by the computer code CLAP to evaluate the seismic performance of the analysed buildings. The results of the numerical analyses show that the Ω* method: (i) reduces the unnecessary global overstrength which typically is found in structures designed in accordance to EC8 design rules; (ii) leads to an optimized structural design; (iii) ensures a local and global ductility of braces under cyclic actions comparable to EC8 design solutions; (iv) has a greater “flexibility” in the design process.
HighlightsA design method for X-CBFs, Ω* method, is validated.Ω* method avoids the conservatism of EC8, which often leads to oversized structures or not feasible structural solutions.X-CBFs designed by Ω* method exhibit dissipative behaviour and seismic performance comparable to that of frames designed by EC8.Ω* method is conceptually similar to that of EC8; therefore, it can be easily incorporated into EC8 and embraced by the European structural designers.Being EC8 formulated in performance based format, the Ω* method is immediately applicable in Europe, because it ensures the same level of structural safety expected when using EC8.
Ω* method: An alternative to Eurocode 8 procedure for seismic design of X-CBFs
https://orcid.org/0000-0003-3197-0248
AbstractThe paper validates Ω* method proposed by some of the authors in previous papers for design of X-Concentric Braced Frames (X-CBFs). This method was obtained relaxing some of the requirements of the method provided by the European seismic code (Eurocode 8, EC8). Therefore, Ω* method is conceptually similar to that of EC8, which makes it easy to be incorporated into EC8 and to be embraced by the European structural designers. The paper analyses the seismic performance of a set of X-CBFs designed both according to EC8 and Ω* methods. Several buildings characterised by different numbers of storeys, numbers of bracings in plan and by different bay spans are considered. Non-linear dynamic analyses have been carried out by the computer code CLAP to evaluate the seismic performance of the analysed buildings. The results of the numerical analyses show that the Ω* method: (i) reduces the unnecessary global overstrength which typically is found in structures designed in accordance to EC8 design rules; (ii) leads to an optimized structural design; (iii) ensures a local and global ductility of braces under cyclic actions comparable to EC8 design solutions; (iv) has a greater “flexibility” in the design process.
HighlightsA design method for X-CBFs, Ω* method, is validated.Ω* method avoids the conservatism of EC8, which often leads to oversized structures or not feasible structural solutions.X-CBFs designed by Ω* method exhibit dissipative behaviour and seismic performance comparable to that of frames designed by EC8.Ω* method is conceptually similar to that of EC8; therefore, it can be easily incorporated into EC8 and embraced by the European structural designers.Being EC8 formulated in performance based format, the Ω* method is immediately applicable in Europe, because it ensures the same level of structural safety expected when using EC8.
Ω* method: An alternative to Eurocode 8 procedure for seismic design of X-CBFs
https://orcid.org/0000-0003-3197-0248
AbstractThe paper validates Ω* method proposed by some of the authors in previous papers for design of X-Concentric Braced Frames (X-CBFs). This method was obtained relaxing some of the requirements of the method provided by the European seismic code (Eurocode 8, EC8). Therefore, Ω* method is conceptually similar to that of EC8, which makes it easy to be incorporated into EC8 and to be embraced by the European structural designers. The paper analyses the seismic performance of a set of X-CBFs designed both according to EC8 and Ω* methods. Several buildings characterised by different numbers of storeys, numbers of bracings in plan and by different bay spans are considered. Non-linear dynamic analyses have been carried out by the computer code CLAP to evaluate the seismic performance of the analysed buildings. The results of the numerical analyses show that the Ω* method: (i) reduces the unnecessary global overstrength which typically is found in structures designed in accordance to EC8 design rules; (ii) leads to an optimized structural design; (iii) ensures a local and global ductility of braces under cyclic actions comparable to EC8 design solutions; (iv) has a greater “flexibility” in the design process.
HighlightsA design method for X-CBFs, Ω* method, is validated.Ω* method avoids the conservatism of EC8, which often leads to oversized structures or not feasible structural solutions.X-CBFs designed by Ω* method exhibit dissipative behaviour and seismic performance comparable to that of frames designed by EC8.Ω* method is conceptually similar to that of EC8; therefore, it can be easily incorporated into EC8 and embraced by the European structural designers.Being EC8 formulated in performance based format, the Ω* method is immediately applicable in Europe, because it ensures the same level of structural safety expected when using EC8.
Ω* method: An alternative to Eurocode 8 procedure for seismic design of X-CBFs
Bosco, Melina (author) / Brandonisio, Giuseppe (author) / Marino, Edoardo M. (author) / Mele, Elena (author) / De Luca, Antonello (author)
Journal of Constructional Steel Research ; 134 ; 135-147
2017-03-22
13 pages
Article (Journal)
Electronic Resource
English
Ω* method: An alternative to Eurocode 8 procedure for seismic design of X-CBFs
| British Library Online Contents | 2017