@article{AlemuHabteLahmeretal.,
  author    = {Alemu, Yohannes L. and Habte, Bedilu and Lahmer, Tom and Urgessa, Girum},
  title     = {Topologically preoptimized ground structure (TPOGS) for the optimization of 3D RC buildings},
  series = {Asian Journal of Civil Engineering},
  volume    = {2023},
  journal   = {Asian Journal of Civil Engineering},
  publisher = {Springer International Publishing},
  address   = {Cham},
  doi       = {10.1007/s42107-023-00640-2},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230517-63677},
  pages     = {1 -- 11},
  abstract  = {As an optimization that starts from a randomly selected structure generally does not guarantee reasonable optimality, the use of a systemic approach, named the ground structure, is widely accepted in steel-made truss and frame structural design. However, in the case of reinforced concrete (RC) structural optimization, because of the orthogonal orientation of structural members, randomly chosen or architect-sketched framing is used. Such a one-time fixed layout trend, in addition to its lack of a systemic approach, does not necessarily guarantee optimality. In this study, an approach for generating a candidate ground structure to be used for cost or weight minimization of 3D RC building structures with included slabs is developed. A multiobjective function at the floor optimization stage and a single objective function at the frame optimization stage are considered. A particle swarm optimization (PSO) method is employed for selecting the optimal ground structure. This method enables generating a simple, yet potential, real-world representation of topologically preoptimized ground structure while both structural and main architectural requirements are considered. This is supported by a case study for different floor domain sizes.},
  subject      = {Bodenmechanik},
  language  = {en}
}
@article{IbanezKraus,
  author    = {Ibanez, Stalin and Kraus, Matthias},
  title     = {A Numerical Approach for Plastic Cross Cross-Sectional Analyses of Steel Members},
  series = {ce/papers},
  volume    = {2021},
  journal   = {ce/papers},
  number    = {Volume 4, issue 2-4},
  publisher = {Ernst \& Sohn, a Wiley brand},
  address   = {Berlin},
  doi       = {10.1002/cepa.1527},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20220112-45622},
  pages     = {2098 -- 2106},
  abstract  = {Global structural analyses in civil engineering are usually performed considering linear-elastic material behavior. However, for steel structures, a certain degree of plasticization depending on the member classification may be considered. Corresponding plastic analyses taking material nonlinearities into account are effectively realized using numerical methods. Frequently applied finite elements of two and three-dimensional models evaluate the plasticity at defined nodes using a yield surface, i.e. by a yield condition, hardening rule, and flow rule. Corresponding calculations are connected to a large numerical as well as time-consuming effort and they do not rely on the theoretical background of beam theory, to which the regulations of standards mainly correspond. For that reason, methods using beam elements (one-dimensional) combined with cross-sectional analyses are commonly applied for steel members in terms of plastic zones theories. In these approaches, plasticization is in general assessed by means of axial stress only. In this paper, more precise numerical representation of the combined stress states, i.e. axial and shear stresses, is presented and results of the proposed approach are validated and discussed.},
  subject      = {Stahlkonstruktion},
  language  = {en}
}
@misc{Froehlich,
  type      = {Master Thesis},
  author    = {Fr{\"o}hlich, Jan},
  title     = {On systematic approaches for interpreted information transfer of inspection data from bridge models to structural analysis},
  doi       = {10.25643/bauhaus-universitaet.4131},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200416-41310},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {82},
  abstract  = {In conjunction with the improved methods of monitoring damage and degradation processes, the interest in reliability assessment of reinforced concrete bridges is increasing in recent years. Automated imagebased inspections of the structural surface provide valuable data to extract quantitative information about deteriorations, such as crack patterns. However, the knowledge gain results from processing this information in a structural context, i.e. relating the damage artifacts to building components. This way, transformation to structural analysis is enabled. This approach sets two further requirements: availability of structural bridge information and a standardized storage for interoperability with subsequent analysis tools. Since the involved large datasets are only efficiently processed in an automated manner, the implementation of the complete workflow from damage and building data to structural analysis is targeted in this work. First, domain concepts are derived from the back-end tasks: structural analysis, damage modeling, and life-cycle assessment. The common interoperability format, the Industry Foundation Class (IFC), and processes in these domains are further assessed. The need for usercontrolled interpretation steps is identified and the developed prototype thus allows interaction at subsequent model stages. The latter has the advantage that interpretation steps can be individually separated into either a structural analysis or a damage information model or a combination of both. This approach to damage information processing from the perspective of structural analysis is then validated in different case studies.},
  subject      = {Br{\"u}ckenbau},
  language  = {en}
}
@article{SellerhoffMilbradtLippert1997,
  author    = {Sellerhoff, F. and Milbradt, Peter and Lippert, C.},
  title     = {Ein dimensionsunabh{\"a}ngiges topologisches Modell auf der Basis von Simplexen},
  doi       = {10.25643/bauhaus-universitaet.461},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4616},
  year      = {1997},
  abstract  = {Die geometrische Modellierung hat in den Ingenieurwissenschaften eine große Bedeutung erlangt. Die Visualisierung von zwei- oder dreidimensionalen Problemstellungen ist aus heutigen Anwendungen nicht mehr wegzudenken. Zunehmend r{\"u}cken Aufgabenstellungen aus dem Bereich der geometrischen Modellierung in den Vordergrund, die {\"u}ber die etablierten Dimensionen 1-3 hinausgehen und die nicht mehr rein geometrischer Natur sind. Hierzu z{\"a}hlen Aufgabenstellungen aus den Bereichen numerische Simulation, Parameteridentifikation und Strukturanalyse. Auf diese nicht-geometrischen Aufgabenstellungen sollen geometrische Verfahren, wie z.B. Triangulation, konvexe H{\"u}lle, geometrischer Schnitt und Interpolation angewendet werden. Hierzu werden diese Algorithmen, die alle auf der klassischen Geometrie des euklidischen Raumes beruhen, auf ihre {\"U}bertragbarkeit hin analysiert und {\"u}berarbeitet. Am Beispiel einer Parameteridentifikation wird eine systematische Vorgehensweise vorgestellt, die es erm{\"o}glicht, trotz weniger Versuchsrechnungen den Bereich der in Frage kommenden Parameter umfassend zu beschreiben. Dies erm{\"o}glicht ein besseres Verst{\"a}ndnis der Zusammenh{\"a}nge der Parameter untereinander. H{\"a}ufig existieren mehr als eine Parameterkombination, so daß diese eine Isolinie formen, die ihrerseits unendlich viele L{\"o}sungen des gestellten Problemes im Untersuchungsgebiet beschreibt.},
  subject      = {Parameteridentifikation},
  language  = {de}
}