TY - CHAP ED - Professur Baubetrieb und Bauverfahren, T1 - Tag des Baubetriebs 2004 - Tagungsbeiträge "Planungshaftung in der Bauausführung" N2 - Beiträge zum Tag des Baubetriebs „Planungshaftung in der Bauausführung“ am 16 März 2004 in Weimar der Professur für Baubetrieb und Bauverfahren an der Bauhaus-Universität Weimar. T3 - Schriften der Professur Baubetrieb und Bauverfahren - 06 KW - Weimar / Bauhaus-Universität / Professur Baubetrieb und Bauverfahren KW - Bauausführung KW - Planungshaftung Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20081126-14490 ER - TY - CHAP A1 - Alda, Sascha A1 - Cremers, Armin B. A1 - Bilek, Jochen T1 - Support of Collaborative Structural Design Processes through the Integration of Peer-to-Peer and Multiagent Architectures N2 - Structural engineering projects are increasingly organized in networked cooperations due to a permanently enlarged competition pressure and a high degree of complexity while performing the concurrent design activities. Software that intends to support such collaborative structural design processes implicates enormous requirements. In the course of our common research work, we analyzed the pros and cons of the application of both the peer-to-peer (University of Bonn) and multiagent architecture style (University of Bochum) within the field of collaborative structural design. In this paper, we join the benefits of both architecture styles in an integrated conceptual approach. We demonstrate the surplus value of the integrated multiagent–peer-to-peer approach by means of an example scenario in which several structural engineers are co-operatively designing the basic structural elements of an arched bridge, applying heterogeneous CAD systems. KW - Ingenieurbau KW - Verteiltes System KW - Planungsprozess KW - Modellierung KW - Mehragentensystem Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1481 ER - TY - CHAP A1 - Asayama, Shuichi A1 - Mae, Toshifumi T1 - Fractal Truss Structure and Automatic Form Generation Using Iterated Function System N2 - This paper describes a couple of new truss structures based on fractal geometry. One is the famous Sierpinski Gasket and another is a fractal triangle derived by means of applying a process forming leaves of a cedar tree using M. F. Barnsley’s contraction mapping theory. Therefore a pair of x-y coordinates of an arbitrary nodal point on the structures are generated easily if IFS(Iterated Function System) codes and a scale of them are specified. Structural members are defined similarly. Thus data for frame analysis can be generated automatically, which is significant if the objective structure has complex configuration. Next analytical results under vertical and wind loadings in Japanese Building Code are shown. Here members are assumed to be timber and to have cross section of 15cm×15cm. Finally authors conclude that geometrically new truss structures were developed and automatic data generation for frame analysis was attained using IFS. Analytical results show they contribute to saving material when compared it with King-post truss. KW - Konzipieren KW - Bauwerk KW - Fraktal Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1046 ER - TY - CHAP A1 - Baitsch, Matthias A1 - Hartmann, Dietrich T1 - Object Oriented Finite Element Analysis for Structural Optimization using p-Elements N2 - The optimization of continuous structures requires careful attention to discretization errors. Compared to ordinary low order formulation (h-elements) in conjunction with an adaptive mesh refinement in each optimization step, the use of high order finite elements (so called p-elements) has several advantages. However, compared to the h-method a higher order finite element analysis program poses higher demands from a software engineering point of view. In this article the basics of an object oriented higher order finite element system especially tailored to the use in structural optimization is presented. Besides the design of the system, aspects related to the employed implementation language Java are discussed. KW - Konzipieren KW - Bauwerk KW - Finite-Elemente-Methode Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1089 ER - TY - CHAP A1 - Bargstädt, Hans-Joachim T1 - Was ist die richtige Systemantwort auf die sich atomisierende Bauwirtschaft? N2 - Nur durch Aufträge entsteht das Potenzial, die hochwertigen und modernen Produkte, Verfahren und Systeme auch erfolgreich und vielfach in die Realität umzusetzen. Deshalb sind auch im traditionellen Bauwesen die Mechanismen des Marketings für die Akquisition zu analysieren und hinterfragt der Verfasser das Bild von Baubetrieben als kompetente Anbieter für alle Phasen des Bauens vom Baustoff bis zur Inbetriebnahme eines schlüsselfertigen Objektes. Systemanbieter bereiten die Basis für eine innovative und vernetzte Arbeitsweise. KW - Baubetriebslehre KW - Marketing KW - Akquisition KW - Bauwirtschaft Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7161 ER - TY - CHAP A1 - Berkhahn, Volker A1 - Kinkeldey, Christoph A1 - Schleinkofer, Matthias T1 - Re-Engineering Based on Construction Drawings - From Ground Floor Plan to Product Model N2 - For the management or reorganisation of existing buildings, data concerning dimensions and construction are necessary. Often these data are given exclusively by paper-based drawings and no digital data such as a computer based product model or even a CAD-model are available. In order to perform mass calculation, damage mapping or a recalculation of the structure these drawings of the building under consideration have to be analysed manually by the engineer. This is a very time-consuming job. In order to close this gap between drawings of an existing building and a digital product model an approach is presented in this paper to digitise a drawing, to build up geometric and topologic models and to recognise construction parts of the building. Finally all recognised parts are transformed into a three-dimensional geometric model which provides all necessary geometric information for the product model. During this import process the semantics of a ground floor plan has to be converted into a 3D-model. KW - Architektur KW - Verteiltes System KW - Dreidimensionales CAD KW - Produktmodell Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1832 ER - TY - CHAP A1 - Beyer, Hartmut T1 - Sondervorschläge und Alternativen mit allen Konsequenzen N2 - Der Verfasser begründet zunächst die aktive Erarbeitung von Sondervorschlägen und Alternativen. Im zweiten Abschnitt erfolgt die inhaltliche Strukturierung der Nebenangebote. Im Folgenden werden die Probleme beim Durchsetzen der Sondervorschläge bei der öffentlichen Hand und privaten Auftraggebern und als Alternative dazu das STRABAG teamconcept beschrieben. Im letzten Bereich wird die Verantwortung des Bauunternehmens unterstrichen und ein positives Resümee gezogen. KW - Baubetriebslehre KW - Ausschreibung KW - Öffentlicher Auftrag / Vergabe KW - Angebot KW - Angebotsbearbeitung Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7207 ER - TY - CHAP A1 - Biltchouk, Irina A1 - Pahl, Peter Jan T1 - Interaction of Data Bases and Graphical Interfaces in Civil Engineering N2 - Applications for civil engineering tasks usually contain graphical user interfaces for the engineering processes. Persistent objects of the applications are stored to data bases. The influence of the interaction between a graphical user interface and a data base for the development of an civil engineering application is investigated in this paper. A graphic application for the linear elastic analysis of plane frames, which was previously developed with standard tools of the Java platform, is compared to a redesigned implementation using a generalized data base for persistent objects. The investigation leads to the following results : - A strict distinction between persistent and transient objects influences the class structure of an application, in particular the class structure of a graphical user interface. - The structure of an application depends on the logic for updating of references to persistent and transient graphical objects after an application is read from a file. - The complexity of the reference management can usually be handled better by just in time referencing associated with String - identifiers rather than by automated referencing associated with Name - identifiers. KW - Baubetrieb KW - Computerunterstütztes Verfahren KW - Graphische Benutzeroberfläche KW - Datenbank Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1636 ER - TY - CHAP A1 - Both, Petra von A1 - Kohler, Niklaus A1 - Gessmann, Robin T1 - A virtual life cycle structured platform for building applications N2 - The development of a life cycle structured cooperation platform is described, which is based on an integrated process and goal-oriented project model. Furthermore the structure of a life cycle oriented object structure model and its implementation in the platform are documented. The complete conceptual model is described, which represents the basis of a lifecycle -oriented structuring of the planning object and supports the thematic classification of the object and project management data. KW - Bauwerk KW - Datenmanagement KW - Lebenszyklus Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1219 ER - TY - CHAP A1 - Boukamp, Frank A1 - Akinci, Burcu T1 - Towards Automated Defect Detection: Object-oriented Modeling of Construction Specifications N2 - This paper describes an ongoing research on the representation and reasoning about construction specifications, which is part of a bigger research project that aims at developing a formalism for automating the identification of deviations and defects on construction sites. We specifically describe the requirements on product and process models and an approach for representing and reasoning about construction specifications to enable automated detection and assessment of construction deviations and defects. This research builds on the previous research on modeling design specifications and extends and elaborates concept of contexts developed in that domain. The paper provides an overview of how the construction specifications are being modele d in this research and points out future steps that need to be accomplished to develop the envisioned automated deviation and defect detection system. KW - Bauwerk KW - Datenmanagement KW - Modellierung KW - Norm Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1315 ER -