@inproceedings{ReinhardtGarrettScherer2000,
  author    = {Reinhardt, Jan and Garrett, James H. and Scherer, Raimar J.},
  title     = {The preliminary design of a wearable computer for supporting Construction Progress Monitoring},
  doi       = {10.25643/bauhaus-universitaet.590},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5901},
  year      = {2000},
  abstract  = {Progress monitoring has become more and more important as owners have increasingly demanded shorter times for the delivery of their projects. This trend is even more evident in high technology industries, such as the computer industry and the chemical industry. Fast changing markets, such as the computer industry, force companies to have to build new facilities quickly. To make a statement about construction progress, the status of a building has to be determined and monitored over a period of time. Depicting the construction progress in a diagram over time, statements can be made about the anticipated completion of the project and delays and problems in certain areas. Having this information, measures can be taken to efficiently >catch up< on the schedule of the project. New technologies, such as wearable computers, speech recognition, touch screens and wireless networks could help to move electronic data processing to the construction site. Progress monitoring could very much take advantage of this move, as several intermediate steps of processing progress data can be made unnecessary. The processing of progress data could be entirely done by computers, which means that data for supporting decisions can be made available at the moment the construction progress is measured. This paper describes a project, that investigates how these new technologies can be linked to create a system that enhances the efficiency of progress monitoring. During the project a first prototype of a progress monitoring system was developed that allows construction companies and site supervisors to measure construction progress on site using wearable computers that are speech controlled and connected to a central database via a wireless network.},
  subject      = {Bauablauf},
  language  = {en}
}
@inproceedings{QuerengaesserWernerFirmenich2000,
  author    = {Quereng{\"a}sser, Stephan and Werner, Frank and Firmenich, Berthold},
  title     = {Durchg{\"a}ngiges Informationsmanagement f{\"u}r den Bauprozeß von Einfamilienh{\"a}usern},
  doi       = {10.25643/bauhaus-universitaet.589},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5892},
  year      = {2000},
  abstract  = {Informations-und Kommunikationtechniken haben im Bauwesen noch nicht die gew{\"u}nschten Vorteile f{\"u}r Kosten und Qualit{\"a}t von Bauobjekten erzielt. Die Vielfalt der daf{\"u}r genutzten Systeme und Formate f{\"u}hrt h{\"a}ufig zu Redundanzen und Informationsverlusten in den Planungs- und Bauprozessen sowie Problemen beim Datenaustausch zwischen den Systemen. Durch die Datenmengen, die in CAD, AVA, Terminplanung, Tabellenkalkulation, Textverarbeitung etc. durch unterschiedliche Beteiligte erzeugt werden, ist dar{\"u}ber hinaus das Risiko einer unterschiedlichen Datenaktualit{\"a}t enorm. Als Konsequenz dieser Erkenntnisse bestand die Aufgabe, eine ganzheitliche und durchg{\"a}ngige Produkt- und Prozeßstrategie f{\"u}r den preiswerten Einfamilienhausbau zu entwickeln. Die Grundlage daf{\"u}r bildet ein komplexes System von rationellen Entwurfsregeln, Konstruktionsl{\"o}sungen und Bau- und Baustofflogistikkonzepten auf der Basis moderner Informations- und Kommunikationstechnologien.},
  subject      = {Einfamilienhaus},
  language  = {de}
}
@inproceedings{Hapurne2000,
  author    = {Hapurne, Tania Mariana},
  title     = {Application of Fuzzy Set Theory in Controlling of Urban Storm Drainage Systems},
  doi       = {10.25643/bauhaus-universitaet.586},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5867},
  year      = {2000},
  abstract  = {A fuzzy logic controller - WNC (Water Network Control) was developed for control of urban drainage systems. The objectives are to avoid accidents, flooding, pollutions through combined sewer overflows and excessive operation and maintenance costs. Fuzzy logic was proved to be a promising approach, flexible and easy accepted, because it includes the expert knowledge. Fuzzy control system proposed is robust and also easy to understand and modified. It offers to the operator the possibility to participate directly in the system control, combining the results of the modern optimization techniques with the experience and knowledge accumulated in time by experts. Thus, the control of urban sewer system can be well solved by implementing an intelligent control system, based on available information (fuzzy) and on expert's experience. An important feature of this fuzzy logic system is its capability to elaborate a control decision even in situations that were not considered in the design phase of the urban network.},
  subject      = {Stadtentw{\"a}sserung},
  language  = {en}
}
@inproceedings{HalfmannRankGluecketal.2000,
  author    = {Halfmann, Ansgar and Rank, Ernst and Gl{\"u}ck, M. and Breuer, M. and Durst, F.},
  title     = {A partitioned solution approach for the fluid-structure interaction of wind and thin-walled structures},
  doi       = {10.25643/bauhaus-universitaet.585},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5858},
  year      = {2000},
  abstract  = {In many engineering applications two or more different interacting systems require the numer-ical solution of so-called multifield problems. In civil engineering the interaction of fluid and structures plays an important role, i.e. for fabric tensile structures of light and flexible materials often used for large roof systems, capacious umbrellas or canopies. Whereas powerful numerical simulation techniques have been established in structural engineering as well as in fluid mechan-ics, only relatively few approaches to simulate the interaction of fluids with civil engineering constructions have been presented. To determine the wind loads on complex structures, it is still state-of-the-art to apply semi-empirical, strongly simplifying methods or to perform expensive ex-periments in wind tunnels. In this paper an approach of a coupled fluid-structure simulation will be presented for membrane and thin shell structures. The interaction is described by the struc-tural deformation as response to wind forces, resulting in a modification of the fluid flow domain. Besides a realistic determination of the wind loads, information on the structural stability can be obtained. The so-called partitioned solution is based on an iterative frame algorithm, integrating different codes for Computational Fluid Dynamics (CFD) and for Computational Structural Dy-namics (CSD) in an explicit or an implicit time-stepping procedure. All data exchange between the two different applications is performed via a neutral geometric model provided by a coupling interface. A conservative interpolation method is used for the interpolation of the nodal loads. The time-dependent motion of the structure requires a dynamic modification of the different grids and a redefinition of the Navier-Stokes equations in an Arbitrary Langrangian Eulerian (ALE) formulation. As an example for the present implementation, results of a coupled fluid-structure simulation for a textile membrane canopy will be presented.},
  subject      = {Tragwerk},
  language  = {en}
}
@inproceedings{GurtovyPiskunov2000,
  author    = {Gurtovy, O. G. and Piskunov, V. G.},
  title     = {HIGH-PRECISION MODELING AND FINITE-ELEMENT INVESTIGATION OF ELASTOPLASTIC DEFORMATION OF NON-ISOTROPIC THICK SANDWICH PLATES AND SHELLS},
  doi       = {10.25643/bauhaus-universitaet.584},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5848},
  year      = {2000},
  abstract  = {There was suggested a phenomenological modified quadratic condition of the beginning of plasticity for plastic and quasifragile orthotropic materials. Limiting surface in the shape of a paraboloid with an axis bend over hydrostatic axis corresponds to the condition. The equations of theory of current with the isotropic and anisotropic hardenings, associated with the suggested yield condition, modified into the version of determining equations of strain theory of plasticity are received. These defining equations formed the basis of highlyprecise non-classic continual (along thickness) theory of non-linear deformation of thick sandwich plates and sloping shells. In the approximations along the cross coordinate the specificity of flexural and non-flexural deformations is taken into account. The necessity of introducing the approximations of higher order, as well as accounting for the cross compression while decreasing of the relatively cross normal and shear layer rigidness is shown. The specifications, obtained in comparison with the known physically nonlinear specified model of the bending of plates with orthotropic layers are distinguished. An effective procedure of linearization of the solving equations and getting the solutions in frames of the discrete-continual scheme of the finite-element method is suggested. The approximations of higher order let to model the appearance of the cracs of layers being split by the introducing of slightly hard thin layers into the finite element, not violating the idea of continuality of theory. Calculation of a threelayer plate with rigid face diaphragms on the contour is considered},
  subject      = {Platte},
  language  = {en}
}
@inproceedings{GordienkoZhak2000,
  author    = {Gordienko, Boris I. and Zhak, S. V.},
  title     = {Die optimale Projektierung der metallverarbeitenden Betriebe},
  doi       = {10.25643/bauhaus-universitaet.583},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5832},
  year      = {2000},
  abstract  = {Es wird das gemeine Schema der Projektierung, die die Analyse des Marktes einschließt, betrachtet, die Einsch{\"a}tzung der Nomenklatur und des Umfanges des Produktionsausstoßes der Erzeugnisse, und die Schl{\"u}sselaufgabe der Wahl der Regimes der Bearbeitung. Die letzte Aufgabe wird - konkretisiert es werden die Formeln berichtet und die Algorithmen der Optimierung nach den Kriterien der Produktivit{\"a}t und den Selbstkostenpreisen. Es sind die Formeln f{\"u}r die Produktivit{\"a}t der Systeme mit der flexiblen Verbindung, pr{\"a}zisiert sowie die Abh{\"a}ngigkeiten f{\"u}r die Standhaftigkeit bei den kleinen Geschwindigkeiten des Schneidens. Die Schl{\"u}sselw{\"o}rter: der Markt, die Regimes der Bearbeitung, die Produktivit{\"a}t, der Selbstkostenpreis, die Optimierung},
  subject      = {Metall verarbeitende Industrie},
  language  = {de}
}
@inproceedings{EbertBucher2000,
  author    = {Ebert, Matthias and Bucher, Christian},
  title     = {Modelling of changing of dynamic and static parameters of damaged R/C},
  doi       = {10.25643/bauhaus-universitaet.582},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5825},
  year      = {2000},
  abstract  = {Dynamic testing for damage assessment as non-destructive method has attracted growing in-terest for systematic inspections and maintenance of civil engineering structures. In this con-text the paper presents the Stochastic Finite Element (SFE) Modeling of the static and dy-namic results of own four point bending experiments with R/C beams. The beams are dam-aged by an increasing load. Between the load levels the dynamic properties are determined. Calculated stiffness loss factors for the displacements and the natural frequencies show differ-ent histories. A FE Model for the beams is developed with a discrete crack formulation. Cor-related random fields are used for structural parameters stiffness and tension strength. The idea is to simulate different crack evolutions. The beams have the same design parameters, but because of the stochastic material properties their undamaged state isn't yet the same. As the structure is loaded a stochastic first crack occurs on the weakest place of the structure. The further crack evolution is also stochastic. These is a great advantage compared with de-terministic formulations. To reduce the computational effort of the Monte Carlo simulation of this nonlinear problem the Latin-Hypercube sampling technique is applied. From the results functions of mean value and standard deviation of displacements and frequencies are calcu-lated. Compared with the experimental results some qualitative phenomena are good de-scribed by the model. Differences occurs especially in the dynamic behavior of the higher load levels. Aim of the investigations is to assess the possibilities of dynamic testing under consideration of effects from stochastic material properties},
  subject      = {Stahlbetonbauteil},
  language  = {en}
}
@inproceedings{DuckeEcksteinMontag2000,
  author    = {Ducke, M. and Eckstein, U. and Montag, U.},
  title     = {Die Eisenbahnbr{\"u}cken des Lehrter Bahnhofs in Berlin - Ein ganzheitliches FE-Berechnungskonzept},
  doi       = {10.25643/bauhaus-universitaet.581},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5812},
  year      = {2000},
  abstract  = {Der Komplexit{\"a}t moderner Br{\"u}ckenbauwerke scheinen die verwendeten Berechungsmodelle oft nicht angemessen. Tragwerksberechnungen basieren in vielen F{\"a}llen noch auf der Vorgehensweise, das Br{\"u}ckenbauwerk in Einzelbauteile zu zerlegen und mit unterschiedlichen Teilmodellen zu behandeln. Das erscheint, auch vor dem Hintergrund st{\"a}ndig wachsender Rechnerleistung, nicht mehr zeitgem{\"a}ß. Dies gilt zum Beispiel auch f{\"u}r die g{\"a}ngige Praxis, fl{\"a}chenhafte Br{\"u}cken{\"u}berbauten mit Balkenmodellen zu berechnen. Der vorliegende Beitrag stellt ein ganzheitliches Berech-nungskonzept vor, welches auf der Basis eines einzigen FE-Modells die Berechnung des Gesamtbauwerks erlaubt. Damit wird f{\"u}r alle Bauteile neben der Zustandsgr{\"o}ßenberechnung auch die Bemessung von Stahl- und Spannbetonbauteilen bis hin zu Nachweisen wie zur Beschr{\"a}nkung der Rissbreite gef{\"u}hrt. Die Anwendung dieses Berechnungskonzeptes wird am Beispiel der Eisenbahn{\"u}berf{\"u}hrung des neuen Lehrter Bahn-hofs in Berlin gezeigt. Das verwendete FE-Modell umfasst Baugrund, Fundamente, Stahl- bzw. Gußstahlunterkonstruktion sowie den Stahl- bzw. Spannbeton{\"u}berbau. Besonderheiten sind unter anderem die Modellierung des plattenbalkenartigen {\"U}berbaus durch exzentrische, vorspannbare Schalenelemente und das getrennte Vorhalten von tragwerks- und lastbezogenen Eingabefiles. Damit gelingt die sequentielle Erfassung unterschiedlicher Bettungsmoduli zur Simulation statischer und dynamischer Beanspruchungen, die Ber{\"u}cksichtigung des Anspannens und der Interaktion zwischen vorgespannten Stahlverb{\"a}nden zur Aufnahme von Horizontallasten sowie die Ber{\"u}cksichtigung unterschiedlicher statischer Systeme bei der Herstellung des Spannbeton{\"u}berbaus.},
  subject      = {Berlin},
  language  = {de}
}
@inproceedings{DaniunasKomkaWerner2000,
  author    = {Daniunas, A. and Komka, A. and Werner, F.},
  title     = {ANALYSIS AND DETERMINATION OF STRENGTH IN PLASTIC STAGE OF FREE FORM STEEL SHAPES},
  doi       = {10.25643/bauhaus-universitaet.580},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5803},
  year      = {2000},
  abstract  = {The steel structure design codes require to check up the member strength when evaluating plastic deformations. The model of perfectly plastic material is accepted. The strength criteria for simple cross-sections (I section, etc.) of steel members are given in design codes. The analytical strength criteria for steel cross-sections and numerical approaches based on stepwise procedure are investigated in many articles. Another way for checking the carrying capacity of cross-sections is the use of methods that are applied for defining strain-deformed state of elastic perfectly plastic systems. In this paper non-iterative methods are suggested for checking strength of cross-sections. Carrying capacity of cross section is verified according to extremum principle of plastic fail under monotonically loading and the strain-deformed state of cross-section is defined according to extremum energy principals of elastic potential of residual stresses and complementary work of residual displacements. The mathematical expressions of these principals for discrete cross-section are formulated as problems of convex mathematical programming. The cross-section of steel member using finite element method is divided into free form plane elements. The constant distribution of stresses along the finite element is accepted. The relationships of finite elements for static formulation of the problem are formed so, that kinematics formulation relationships could be obtained in a formal way using the theory of duality. Numerical examples of determination of cross-section strength, composition of interactive curves and composition of moment-curvature curves for different axial force levels are presented.},
  subject      = {Stahlkonstruktion},
  language  = {en}
}
@inproceedings{Counsell2000,
  author    = {Counsell, John},
  title     = {Spatial Database Management and Generation of VRML Models},
  doi       = {10.25643/bauhaus-universitaet.579},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5791},
  year      = {2000},
  abstract  = {The cost of keeping large area urban computer aided architectural design (CAAD) models up to date justifies wider use and access. This paper reviews the potential for collaborative groupwork creation and maintenance of such models and suggests an approach to data entry, data management and generation of appropriate levels of detail models from a Geographic Information System (GIS). Staff at the University of the West of England (UWE) modelled a large area of Bristol to demonstrate millennium landmark proposals. It became swiftly apparent that continued amendment of the model to keep it an accurate reflection of changes on the ground was a major data management problem. Piecing in new CAAD models received from Architectural Practices to visualise them in context as part of the planning negotiation process has often taken staff several days of work for each instance. The model is so complex and proprietary that Bristol City operates a specialist visualisation bureau service. UWE later modelled the environs of the Tower of London to support bids for funding and to provide the context for judging the visual impact of iterative design development. Further research continued to develop more effective approaches to. Data conversion and amalgamation from all the diverse sources was the major impediment to effective group working to create the models. It became apparent that a GIS would assist retrieving all the appropriate data that described the part of the model under creation. It was possible to predict that management of many historic part models stepping back through time, allowing for different expert interpretations to co-exist would be in itself a major task requiring a spatial database/GIS. UWE started afresh from the original source data, to explore the collaborative use of GIS and Virtual Reality Modelling Language (VRML) to integrate models and interventions from various sources and to generate an overall navigable interactive whole. Current exploration of the combination of event driven behaviours and Structured Query Language is seeking to define how appropriately to modify objects in the VRML model on demand. This is beginning to realise the potential for use of this process for: asynchronous group modelling on the lines of a collaborative virtual design studio; historic building maintenance management; visitor management; interpretation of historic sites to visitors and public planning information.},
  subject      = {Raumordnung},
  language  = {en}
}
@inproceedings{ChristovPetkov2000,
  author    = {Christov, Christo T. and Petkov, Zdravko B.},
  title     = {DETERMINATION OF THE DYNAMIC STRESS INTENSITY FACTOR USING ADVANCED ENERGY RELEASE EVALUATION},
  doi       = {10.25643/bauhaus-universitaet.577},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5770},
  year      = {2000},
  abstract  = {In this study a simple effective procedure practically based upon the FEM for determination of the dynamic stress intensity factor (DSIF) depending on the input frequency and using an advanced strain energy release evaluation by the simultaneous release of a set of fictitious nodal spring links near the crack tip is developed and applied. The DSIF is expressed in terms of the released energy per unit crack length. The formulations of the linear fracture mechanics are accepted. This technique is theoretically based upon the eigenvalue problem for assessment of the spring stiffnesses and on the modal decomposition of the crack shape. The inertial effects are included into the released energy. A linear elastic material, time-dependent loading of sine type and steady state response of the structure are assumed. The procedure allows the opening, sliding and mixed modes of the structure fracture to be studied. This rational and powerful technique requires a mesh refinement near the crack tip. A numerical test example of a square notched steel plate under tension is given. Opening mode of fracture is studied only. The DSIF is calculated using a coarse mesh and a single node release for the released energy computation as well a fine mesh and simultaneous release of four links for more accurate values. The results are analyzed. Comparisons with the known exact results from a static loading are presented. Conclusions are derived. The values of the DSIF are significantly larger than the values of the corresponding static SIF. Significant peaks of the DSIF are observed near the natural frequences. This approach is general, practicable, reliable and versatile.},
  subject      = {Bruchmechanik},
  language  = {en}
}
@inproceedings{ChristovPetrova2000,
  author    = {Christov, Christo T. and Petrova, Lyllia B.},
  title     = {COMPARISON OF SOME VARIANTS OF THE FINITE STRIP METHOD FOR ANALYSIS OF COMPLEX SHELL STRUCTURES},
  doi       = {10.25643/bauhaus-universitaet.576},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5760},
  year      = {2000},
  abstract  = {The subject of this paper is to explore and evaluate the semi-analytical, analytical and numerical versions of the finite strip method (FSM) for static, dynamic and stability analyses of complex thin-walled structures. Many of bridge superstructures, some roof and floor structures, reservoirs, channels, tunnels, subways, layered shells and plates etc. can be analysed by this method. In both semi-analytical and analytical variants beam eigenvalue vibration or stability functions, orthogonal polynomials, products of these functions are used as longitudinal functions of the unknowns. In the numerical FSM spline longitudinal displacement functions are implemented. In the semi-analytical and numerical FSM conventional transverse shape functions for displacements are used. In the analytical FSM the accurate function of the strip normal displacement and the plane stress function are applied. These three basic variants of the FSM are compared in quality and quantity in view to the following: basic ideas, modelling, unknowns, DOF, a kind and order of the strips, longitudinal and transverse displacement and stress functions, compatibility requirements, boundary conditions, ways for obtaining of the strip stiffness and load matrices, a kind and size of the structure stiffness matrix and its band width, mesh density, necessary number of terms in length, accuracy and convergence of the stresses and displacements, approaches for refining results, input and output data, computer resources used, application area, closeness to other methods, options for future development. Numerical example is presented. Advantages and shortcomings are pointed. Conclusions are given.},
  subject      = {Schale},
  language  = {en}
}
@inproceedings{BurghardtMeissner2000,
  author    = {Burghardt, Michael and Meißner, Udo F.},
  title     = {Dreidimensionale Finite-Element-Baugrundmodelle f{\"u}r Ingeniuerprobleme},
  doi       = {10.25643/bauhaus-universitaet.575},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5750},
  year      = {2000},
  abstract  = {Bei komplexen Gr{\"u}ndungskonstruktionen sind Planungsfehler durch eine konsistente Modellierung vermeidbar. Manuelle Berechnungsmethoden erm{\"o}glichen im allgemeinen ein dreidimensionales Vorgehen nicht. Numerische Berechnungsmethoden, wie z.B. die Finite-Element-Methode, sind ein optimales Werkzeug zur ganzheitlichen Simulation des Problems. Die f{\"u}r die Finite-Element-Analyse notwendige Diskretisierung komplexer Bau- grundstrukturen ist manuell nicht zu bew{\"a}ltigen. Der vorliegende Beitrag zeigt wie ein Finite-Element-Modell automatisch aus einem geotechnischen Modell unter Ber{\"u}cksichtigung der spezifischen Anforderungen der Baugrund-Tragwerk-Struktur und des Bauablaufes erzeugt werden kann. Hierbei wird die Ber{\"u}cksichtigung der geometrischen und der mechanischen Besonderheiten bei der Netzgenerierung dargestellt.},
  subject      = {Baugrund},
  language  = {de}
}
@inproceedings{BoykoKoepplerKirichuk2000,
  author    = {Boyko, Igor P. and K{\"o}ppler, H. and Kirichuk, A.},
  title     = {INTERACTION OF SPATIAL THIN-WALLED STRUCTURES WITH FLUID-SATURATED SOIL},
  doi       = {10.25643/bauhaus-universitaet.574},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5748},
  year      = {2000},
  abstract  = {Thin-walled spatial structures are broadly used in the modern technician and building. In fuel industry for long-term keeping of oil and gas are used reservoirs of various capacity, which on technological reasons can be shipped under the soil. Shells of reservoirs combine in itself high toughness and low specific consumption of materials. At the same time, being under the soil, they feel steady-state and dynamic loads from ambiance, which particularly in the event, when reservoir is empty, can bring about the loss of stability of its form. On the other hand contact interactions of shell and soil greatly depend on features of ambiance and its saturating of liquid. For building generalized porous springy ambiance models, saturated by the liquid, it is possible to use Bio equations of motion for displacement of hard and fluid phases. Elaboration of mathematical specified interaction models and theirs realization by means of modern computing software allows to study behaviour of spatial thin-walled designs on base of geometric nonlinear theory of shells},
  subject      = {Raumtragwerk},
  language  = {en}
}
@inproceedings{Bittrich2000,
  author    = {Bittrich, Daniel},
  title     = {Verbunddokumente als Nutzeroberfl{\"a}che von Software f{\"u}r die Tragwerksplanung},
  doi       = {10.25643/bauhaus-universitaet.573},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5739},
  year      = {2000},
  abstract  = {Der Schwerpunkt von Forschung und Entwicklung auf dem Gebiet der Tragwerksplanungs-Software lag in den letzten Jahren auf der Erweiterung des funktionalen Umfangs. In der Folge ist es notwendig, den gestiegenen Funktionsumfang einem m{\"o}glichst breiten Anwenderkreis durch ingenieurgem{\"a}ß gestaltete Arbeitsumgebungen zug{\"a}nglich zu machen, so dass ein m{\"o}glichst effizientes und fehlerarmes Arbeiten erm{\"o}glicht wird. Aus der Sicht der Tragwerksplaner muss eine ingenieurgem{\"a}ß gestaltete Software eine dem spezifischen Arbeitsablauf angepasste Nutzer-Software-Interaktion aufweisen. Dabei sind die ben{\"o}tigten Funktionalit{\"a}ten in ein einheitliches System zu integrieren und eine Anpassbarkeit durch den Anwender sicherzustellen. Die Ber{\"u}cksichtigung dieser Anforderungen mit herk{\"o}mmlichen Mitteln w{\"u}rde einen unverh{\"a}ltnism{\"a}ßig hohen Entwicklungsaufwand erfordern. Infolgedessen muss aus der Sicht der Software-Entwickler eine moderne Software-Architektur f{\"u}r die Tragwerksplanung eine Erh{\"o}hung des Wiederverwendungsgrades und eine unabh{\"a}ngige Erweiterbarkeit als zus{\"a}tzliche Anforderungen erf{\"u}llen. In diesem Beitrag wird ein auf Verbunddokumenten basierendes Konzept vorgestellt, mit dem eine Zusammenf{\"u}hrung von Standard-Software und fachspezifischen Software-Komponenten zu einer ingenieurgem{\"a}ßen Arbeitsumgebung erm{\"o}glicht wird. Damit kann die Analyse und die Dokumentation eines Tragelementes einschließlich der zugeh{\"o}rigen Datenhaltung innerhalb eines Verbunddokumentes erfolgen. Gleichzeitig kann der software-technische Wiederverwendungsgrad durch die Definition eines Component Frameworks als unabh{\"a}ngig erweiterbare Software-Architektur und durch den Einsatz von Software-Komponenten mit eigener Nutzeroberfl{\"a}che {\"u}ber das bisher erreichte Niveau hinaus gesteigert werden. Die Umsetzbarkeit des Konzeptes wird durch eine Pilotimplementierung demonstriert.},
  subject      = {Tragwerk},
  language  = {de}
}
@inproceedings{BiehounekGrolik2000,
  author    = {Biehounek, Josef and Grolik, Helmut},
  title     = {Zur voll-probabilistischen Verallgemeinerung des Kraftgr{\"o}ßenverfahrens},
  doi       = {10.25643/bauhaus-universitaet.572},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5728},
  year      = {2000},
  abstract  = {Die Versagenswahrscheinlichkeit nach einem Grenzzustand wird gew{\"o}hnlich mit dem Integral I der Basisvariablen-Verteilungsdichte {\"u}ber den Versagensbereich bestimmt. Dabei ist eine geschlossene L{\"o}sung nur im Spezialfall normalverteilter Basisvariablen bei Linearit{\"a}t der Grenzzustandsgleichung m{\"o}glich. In anderen F{\"a}llen sind verschiedene N{\"a}herungsverfahren gebr{\"a}uchlich, die auf den Momenten der Basisvariablen und geeignet gew{\"a}hlten Indizes als Sicherheitskenngr{\"o}ßen beruhen. Eine gr{\"o}ßere Genauigkeit bieten die Zuverl{\"a}ssigkeitstheorien erster bzw. zweiter Ordnung, die ebenfalls von I ausgehen. Im Beitrag wird ein neuartiges Verfahren vorgestellt, dessen Ausgangspunkt nicht I, sondern das Kraftgr{\"o}ßenverfahren als einem Standardalgorithmus des konstruktiven Ingenieurbaus ist. Die Einbeziehung der maßgebenden Zufallsgr{\"o}ßen in die Matrix der Vorzahlen und die Belastungszahlen f{\"u}hrt zur Verallgemeinerung des Systems der Elastizit{\"a}tsgleichungen zum zuf{\"a}lligen System der Elastizit{\"a}tsgleichungen. Dessen L{\"o}sung, die durch den {\"U}bergang zu einem deterministischen Ersatzsystem gewonnen wird, liefert die statisch Unbestimmten als Funktionen der im System wirkenden Zufallsgr{\"o}ßen (z.B. E-Modul der St{\"a}be und Belastung). Da dieser Zusammenhang analytisch vorliegt, kann die Wirkung einzelner Zufallseinfl{\"u}sse auf die statisch Unbestimmten und die daraus folgenden sicherheitsrelevanten Zustandsgr{\"o}ßen beurteilt werden. Die Dichtefunktion der Grenzzustandsgleichung kann berechnet oder durch Simulation ermittelt werden. Daraus folgt . Nicht normalverteilte Zufallsgr{\"o}ßen werden durch Entwicklung in orthogonale Polynome Gaußscher Zufallsgr{\"o}ßen ber{\"u}cksichtigt.},
  subject      = {Kraftmethode},
  language  = {de}
}
@inproceedings{BonevHristov2000,
  author    = {Bonev, Z. and Hristov, H.},
  title     = {BEHAVIOR FACTOR EVALUATION BASED ON SDOF SYSTEM PRESENTATION AND ENERGY APPROACH},
  doi       = {10.25643/bauhaus-universitaet.570},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5702},
  year      = {2000},
  abstract  = {Rectangular steel frames are considered and subjected to strong ground motion. Their behavior factor is numerically evaluated using nonlinear time history analysis and different ground acceleration records. The behavior factor is determined assuming severe collapse mechanism occurs throughout the time history. The system of equations is transformed into single equation end then the energy balance concept is applied. The expression for the behavior factor is derived and its application to four story two bays steel frame is illustrated and the corresponding results are discussed.},
  subject      = {Rahmentragwerk},
  language  = {en}
}
@inproceedings{RaueTimmlerAdami2000,
  author    = {Raue, Erich and Timmler, Hans-Georg and Adami, Kay},
  title     = {Physikalisch nichtlineare Untersuchung der Aussteifungssysteme von zu revitalisierenden Plattenbauten mittels mathematischer Optimierungsalgorithmen},
  doi       = {10.25643/bauhaus-universitaet.569},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5690},
  year      = {2000},
  abstract  = {Im Zusammenhang mit der Revitalisierung von Plattenbauwerken kommt der Bewertung bzw. Neubewertung der vorhandenen Aussteifungssysteme große Bedeutung zu. Zur Aussteifung werden im allgemeinen raumbreite, raumhohe und meist unbewehrte Betonelemente verwendet, die lediglich konstruktiv miteinander verbunden sind. Im Rahmen der Untersuchung wird ein vorhandenes Berechnungsmodell zur physikalisch nichtlinearen Analyse von Aussteifungssystemen mehrgeschossiger Geb{\"a}ude unter Horizontallast so erweitert, dass unbewehrte Horizontalfugen ber{\"u}cksichtigt werden k{\"o}nnen. Die Analyse der Aussteifungssysteme wird auf der Basis der Methode der mathematischen Optimierung realisiert, wobei die aussteifenden W{\"a}nde als offene d{\"u}nnwandige, schlanke St{\"a}be betrachtet werden, die {\"u}ber dehnstarre Deckenscheibe (Diaphragmen) gekoppelt sind. Im Beitrag wird gezeigt, dass sich bei Ber{\"u}cksichtigung des physikalisch nichtlinearen Tragverhaltens und der damit verbundenen Schnittgr{\"o}ßenumlagerungen Tragreserven erschließen lassen, die auf die Standsicherheit sowohl vorhandener als auch revitalisierter Geb{\"a}ude angerechnet werden k{\"o}nnen.},
  subject      = {Großtafelbau},
  language  = {de}
}
@inproceedings{Althoefer2000,
  author    = {Alth{\"o}fer, Ingo},
  title     = {Multiple Choice Systems for Decision Support},
  doi       = {10.25643/bauhaus-universitaet.568},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5685},
  year      = {2000},
  abstract  = {Humans are able to think, to feel, and to sense. We are also able to compute but not very well. In contrast, computers are giants in computing. Yet, they can not do anything else besides computing. Appropriate combinations of the different gifts and strengths of human and computer may result in impressive performances. In the 3-Hirn approach one human and two computers are involved. On the computers different programs are running. The human starts the machines and inspects the solutions they propose. He compares these candidate solutions and finally decides for one of the alternatives. So, the human makes the final choice from a small number of computer proposals. In performance-oriented chess, 3-Hirn combinations consisting of an amateur player and commer-cial software have reached world class level. 3-Hirn is a Decision Support System with Multiple Choice Structure. Such Multiple Choice Systems will be exhibited and discussed.},
  subject      = {Entscheidung bei mehrfacher Zielsetzung},
  language  = {en}
}
@inproceedings{AbramianLitvin2000,
  author    = {Abramian, A. K. and Litvin, S.S.},
  title     = {AUTOPARAMETRIC STABILIZER OF OSCILLATION AMPLITUDE},
  doi       = {10.25643/bauhaus-universitaet.567},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5674},
  year      = {2000},
  abstract  = {A method of automatic maintenance of vibration amplitude of a number of mechanisms at given level, when exiting force amplitude is varied greatly is given. For this purpose a pendulum is attached to a mechanism through a viscoelastic hinge. Load of a pendulum can move along an arm and it is viscoelastic connected to it.},
  subject      = {Schwingung},
  language  = {en}
}