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Evaluation of safety formats for non-linear finite element analyses of statically indeterminate concrete structures subjected to different load paths

Mattias Blomfors (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; M. Engen ; Mario Plos (Institutionen för bygg- och miljöteknik, Konstruktionsteknik)
Structural Concrete (1464-4177). Vol. 17 (2016), 1, p. 44-51.
[Artikel, refereegranskad vetenskaplig]

To increase the efficiency of new structures and perform safety evaluations of existing structures, it is necessary to model and analyse the non-linear behaviour of reinforced concrete. The applicability of the safety formats in present design codes is unclear for indeterminate structures subjected to loading in several directions. The safety formats in fib Model Code 2010 have been evaluated for a reinforced concrete frame subjected to vertical and horizontal loading and the influence of load history studied. Basic reliability methods were used together with response surfaces to assess the failure probabilities and one safety format did not meet the intended safety level. The results indicate the importance of load history and it is concluded that more research is required regarding how load history influences the safety level of complex structures.

Nyckelord: fib Model Code 2010 , first-order reliability method , non-linear finite element analysis , reinforced concrete frame , response surface , safety formats



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Denna post skapades 2016-04-01. Senast ändrad 2016-04-15.
CPL Pubid: 233952

 

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