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dc.contributor.authorRoyset, Johannes O.
dc.contributor.authorLiang, Hong
dc.contributor.authorHaukaas, Terje
dc.dateAugust 9, 2007
dc.date.accessioned2016-06-01T21:06:19Z
dc.date.available2016-06-01T21:06:19Z
dc.date.issued2007-08-09
dc.identifier.citationCan. J. Civ. Eng. 34: 856-869 (2007)en_US
dc.identifier.urihttp://hdl.handle.net/10945/48825
dc.descriptionThe article of record as published may be found at http://dx.doi.org/10.1139/L07-002en_US
dc.description.abstractThis paper describes a functional tool for engineers to make rational design decisions by balancing cost and safety. Focus is on seismic design, in which nonlinear structural response must be considered. For this purpose, we implement and apply a state-of-the-art algorithm for reliability-based design optimization. The work extends the OpenSees software, which is rapidly gaining users in the earthquake engineering community. Consequently, design optimization with sophisticated nonlinear finite element models of real structures is possible. An object-oriented software architecture is employed that focuses on maintainability and extensibility of the software. This approach also offers flexibility in the choice of optimization and reliability methods for each specific problem, supported by the decoupled nature of the 'optimization algorithm. Our work utilizes and extends the existing tools for structural reliability analysis in OpenSees. In particular, we employ response sensitivities that are computed within the finite element code by direct differentiation. The implementation is tested through case studies with nonlinear structural response. Discontinuous response gradients are overcome by use of fibre cross sections and smoothed material models. The numerical examples include the seismic design optimization of a six-storey, three-bay, reinforced concrete building.en_US
dc.description.sponsorshipDiscovery Grant from the Natural Sciences and Engineering Research Council of Canada (NSERC)en_US
dc.description.sponsorshipLSSOL software packageen_US
dc.format.extent14 p.en_US
dc.publisherNRC Canadaen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleReliability-based optimal design software for earthquake engineering applicationsen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.contributor.departmentOperations Research (OR)en_US
dc.subject.authorreliability-based design optimizationen_US
dc.subject.authornonlinear finite elementsen_US
dc.subject.authorearthquake engineeringen_US
dc.subject.authorobject-oriented software developmenten_US
dc.subject.authorOpenSeesen_US
dc.description.funderDiscovery Grant from the Natural Sciences and Engineering Research Council of Canada (NSERC)en_US


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