Techno Press


Steel and Composite Structures   Volume 9, Number 6, December 2009, pages 499-518
DOI: http://dx.doi.org/10.12989/scs.2009.9.6.499
 
Stochastic finite element analysis of structural systems with partially restrained connections subjected to seismic loads
Ozlem Cavdar, Alemdar Bayraktar, Ahmet Cavdar and Murat Emre Kartal

 
Abstract     [Full Text]
    The present paper investigates the stochastic seismic responses of steel structure systems with Partially Restrained (PR) connections by using Perturbation based Stochastic Finite Element (PSFEM) method. A stiffness matrix formulation of steel systems with PR connections and PSFEM and MCS formulations of structural systems are given. Based on the formulations, a computer program in FORTRAN language has been developed, and stochastic seismic analyses of steel frame and bridge systems have been performed for different types of connections. The connection parameters, material and geometrical properties are assumed to be random variables in the analyses. The Kocaeli earthquake occurred in 1999 is considered as a ground motion. The connection parameters, material and geometrical properties are considered to be random variables. The efficiency and accuracy of the proposed SFEM algorithm are validated by comparison with results of Monte Carlo simulation (MCS) method.
 
Key Words
    perturbation based stochastic finite element method; steel structures; PR connections; stiffness matrix; Monte Carlo simulation; stochastic dynamic analysis.
 
Address
Ozlem Cavdar; Gumushane University, Department of Civil Engineering, 29000, Gumushane, Turkey
Alemdar Bayraktar; Karadeniz Technical University, Department of Civil Engineering, 61080, Trabzon, Turkey
Ahmet Cavdar; Gumushane University, Department of Civil Engineering, 29000, Gumushane, Turkey
Murat Emre Kartal; Zonguldak Karaelmas University, Department of Civil Engineering, 67100, Zonguldak, Turkey
 

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