@inproceedings{AbrahamczykSchwarz, author = {Abrahamczyk, Lars and Schwarz, Jochen}, title = {Forecast Engineering: From Past Design to Future Decision 2018}, doi = {10.25643/bauhaus-universitaet.4036}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191126-40364}, pages = {112}, abstract = {Institute of Structural Engineering, Institute of Structural Mechanics, as well as Institute for Computing, Mathematics and Physics in Civil Engineering at the faculty of civil engineering at the Bauhaus-Universit{\"a}t Weimar presented special topics of structural engineering to highlight the broad spectrum of civil engineering in the field of modeling and simulation. The summer course sought to impart knowledge and to combine research with a practical context, through a challenging and demanding series of lectures, seminars and project work. Participating students were enabled to deal with advanced methods and its practical application. The extraordinary format of the interdisciplinary summer school offers the opportunity to study advanced developments of numerical methods and sophisticated modelling techniques in different disciplines of civil engineering for foreign and domestic students, which go far beyond traditional graduate courses. The proceedings at hand are the result from the Bauhaus Summer School course: Forecast Engineering held at the Bauhaus-Universit{\"a}t Weimar, 2018. It summarizes the results of the conducted project work, provides the abstracts/papers of the contributions by the participants, as well as impressions from the accompanying programme and organized cultural activities.}, subject = {Proceedings}, language = {en} } @inproceedings{AbrahamczykSchwarz, author = {Abrahamczyk, Lars and Schwarz, Jochen}, title = {Forecast Engineering: From Past Design to Future Decision 2017}, doi = {10.25643/bauhaus-universitaet.4034}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191122-40344}, pages = {221}, abstract = {The design of engineering structures takes place today and in the past on the basis of static calculations. The consideration of uncertainties in the model quality becomes more and more important with the development of new construction methods and design requirements. In addition to the traditional forced-based approaches, experiences and observations about the deformation behavior of components and the overall structure under different exposure conditions allow the introduction of novel detection and evaluation criteria. The proceedings at hand are the result from the Bauhaus Summer School Course: Forecast Engineering held at the Bauhaus-Universit{\"a}t Weimar, 2017. It summarizes the results of the conducted project work, provides the abstracts of the contributions by the participants, as well as impressions from the accompanying programme and organized cultural activities. The special character of this course is in the combination of basic disciplines of structural engineering with applied research projects in the areas of steel and reinforced concrete structures, earthquake and wind engineering as well as informatics and linking them to mathematical methods and modern tools of visualization. Its innovative character results from the ambitious engineering tasks and advanced modeling demands.}, subject = {Proceedings}, language = {en} } @inproceedings{VilceanuAbrahamczykMorgenthal, author = {V{\^i}lceanu, Victor and Abrahamczyk, Lars and Morgenthal, Guido}, title = {Nonlinear Analysis of Structures: Wind Induced Vibrations}, doi = {10.25643/bauhaus-universitaet.4033}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191122-40337}, pages = {183}, abstract = {The proceedings at hand are the result of the International Master Course Module: "Nonlinear Analysis of Structures: Wind Induced Vibrations" held at the Faculty of Civil Engineering at Bauhaus-University Weimar, Germany in the summer semester 2019 (April - August). This material summarizes the results of the project work done throughout the semester, provides an overview of the topic, as well as impressions from the accompanying programme. Wind Engineering is a particular field of Civil Engineering that evaluates the resistance of structures caused by wind loads. Bridges, high-rise buildings, chimneys and telecommunication towers might be susceptible to wind vibrations due to their increased flexibility, therefore a special design is carried for this aspect. Advancement in technology and scientific studies permit us doing research at small scale for more accurate analyses. Therefore scaled models of real structures are built and tested for various construction scenarios. These models are placed in wind tunnels where experiments are conducted to determine parameters such as: critical wind speeds for bridge decks, static wind coefficients and forces for buildings or bridges. The objective of the course was to offer insight to the students into the assessment of long-span cable-supported bridges and high-rise buildings under wind excitation. The participating students worked in interdisciplinary teams to increase their knowledge in the understanding and influences on the behaviour of wind-sensitive structures.}, subject = {Ingenieurbau}, language = {en} } @phdthesis{Karaki, author = {Karaki, Ghada}, title = {Assessment of coupled models of bridges considering time-dependent vehicular loading}, doi = {10.25643/bauhaus-universitaet.1589}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120402-15894}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {184}, abstract = {Bridge vibration due to traffic loading has been a subject of extensive research in the last decades. The focus of such research has been to develop solution algorithms and investigate responses or behaviors of interest. However, proving the quality and reliability of the model output in structural engineering has become a topic of increasing importance. Therefore, this study is an attempt to extend concepts of uncertainty and sensitivity analyses to assess the dynamic response of a coupled model in bridge engineering considering time-dependent vehicular loading. A setting for the sensitivity analysis is proposed, which enables performing the sensitivity analysis considering random stochastic processes. The classical and proposed sensitivity settings are used to identify the relevant input parameters and models that have the most influence on the variance of the dynamic response. The sensitivity analysis exercises the model itself and extracts results without the need for measurements or reference solutions; however, it does not offer a means of ranking the coupled models studied. Therefore, concepts of total uncertainty are employed to rank the coupled models studied according to their fitness in describing the dynamic problem. The proposed procedures are applied in two examples to assess the output of coupled subsystems and coupled partial models in bridge engineering considering the passage of a heavy vehicle at various speeds.}, subject = {Ingenieurbau}, language = {en} } @misc{Rahn2007, type = {Master Thesis}, author = {Rahn, Andre}, title = {"Monitoring an Br{\"u}ckenkappen mit Tellerankern"}, doi = {10.25643/bauhaus-universitaet.1274}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080307-13431}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2007}, abstract = {Br{\"u}ckenkappen gew{\"a}hrleisten die Trennung der Verkehrsr{\"a}ume Fahrbahn und Gehweg und m{\"u}ssen aufgrund ihrer Anordnung im Querschnitt Schutz- und Leiteinrichtungen aufnehmen. Zur Verankerung der Br{\"u}ckenkappen am {\"U}berbau werden je nach Erfordernissen Anschlussbewehrung und / oder Telleranker angeordnet. Die vorliegende Arbeit analysiert grundlegende M{\"o}glichkeiten zur messtechnischen Untersuchung von Br{\"u}ckenkappen bei Anwendung von Tellerankern. Dabei werden die theoretische und konstruktiven Grundlagen der Kappenausbildung betrachtet. Außerdem werden die Zusammenh{\"a}nge zwischen den auftretenden Einwirkungen und deren Auswirkungen auf Br{\"u}ckenkappen betrachtet. Darauf aufbauend werden Kennwerte zur Ermittlung der Beanspruchung in den Kappen und den Tellerankern abgeleitet und hinsichtlich der messtechnischen Erfassung und Auswertung der Messdaten analysiert.}, subject = {Br{\"u}cke}, language = {de} } @article{SchleicherRieche1997, author = {Schleicher, W. and Rieche, M.}, title = {Die Anwendung der computergest{\"u}tzten Tragwerksplanung von konstruktiven Ingenieurbauwerken im Zuge des Verkehrsprojektes Inter-City-Express 97}, doi = {10.25643/bauhaus-universitaet.498}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4989}, year = {1997}, abstract = {Die Entwicklung Berlins zur neuen Hauptstadt des vereinigten Deutschlands erfordert den umfangreichen Ausbau der innerst{\"a}dtischen Verkehrswege und eine umfassende Einbindung in das bundesweite Verkehrsnetz. Der Ausbau der Inter-City-Express-Strecke zwischen Hannover und Berlin bedingte eine Umplanung großer Streckenabschnitte der Deutschen Bahn AG. Im Zeitalter der computergest{\"u}tzten Informationsverarbeitung sind gerade auf dem Gebiet der Tragwerksplanung konstruktiver Ingenieurbauten vielf{\"a}ltige M{\"o}glichkeiten gegeben. So ist bei der Planung von Br{\"u}ckenneubauten eine durchgehende computergest{\"u}tzte Konstruktion und Tragwerksplanung vom Vorentwurf bis hin zur Fertigung m{\"o}glich. Weiterhin gestatten besondere Berechnungsmethoden bei speziellen Belastungsarten eine exaktere Schnittkraft- und Spannungsermittlung und dadurch eine dem wirklichen Tragverhalten entsprechende genauere Nachweisf{\"u}hrung. An Beispielen aus dem konstruktiven Ingenieurbau im Zuge der Sanierung der Berliner Stadtbahn wird die Anwendung moderner Rechentechnik und computergest{\"u}tzter Konstruktionsmethoden und Berechnungsverfahren diskutiert. Die Berliner Stadtbahn wird in weiten Abschnitten {\"u}ber gemauerte Ziegelsteinviadukte gef{\"u}hrt. Das Konzept der Sanierungsmaßnahmen sah neben der Anordnung einer lastverteilenden Platte einen Gleisaufbau als Feste Fahrbahn vor. Zus{\"a}tzlich wurden die Gleisabst{\"a}nde den heutigen Bundesbahnvorschriften angepaßt. Aus diesem Grund wurde eine genaue Nachrechnung der Stadbahnviadukte unter Ber{\"u}cksichtigung der verschiedensten Parameter (z.B. Fugen in der lastverteilenden Platte, Rißbildung im Mauerwerk, Schubverformungen in Fugen zwischen Beton und Mauerwerk bei {\"U}berschreitung von Grenzwerten) erforderlich. Die zwischen dem Berliner Hauptbahnhof und dem Bahnhof Jannowitzbr{\"u}cke befindliche Eisenbahn{\"u}berf{\"u}hrung {\"u}ber die Holzmarktstraße wurden abgebrochen. Das neue Bauwerk besteht aus einer zweifeldrigen, schiefwinkligen Deckbr{\"u}cke f{\"u}r 4 Gleise. Auf Grund der komplizierten geometrischen Randbedingungen erfolgte eine durchg{\"a}ngige computergest{\"u}tzte Erstellung der Ausf{\"u}hrungsunterlagen. Die Hauptabmessungen der Konstruktion wurden mit Hilfe von Vermessungsdaten bestimmt, die im CAD-Programm verarbeitet wurden. Die CAD-Daten bildeten die geometrischen Eingangsgr{\"o}ßen f{\"u}r das Berechnungsprogramm. Die Querschnittsdimensionierung der Berechnung ging dann in die CAD-Bearbeitung ein. Die Koordinaten f{\"u}r die Werkstattfertigung sowie f{\"u}r die Montage auf der Baustelle ergaben sich ebenfalls aus den Berechnungsergebnissen.}, subject = {Ingenieurbau}, language = {de} } @article{Krzizek1997, author = {Krzizek, H.}, title = {Zur bauingenieurgerechten Speicherung von Entwurfspl{\"a}nen des konstruktiven Ingenieurbaues in Datenbanken}, doi = {10.25643/bauhaus-universitaet.485}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4850}, year = {1997}, abstract = {Es wird gezeigt, daß im allgemeinen die Zeichnungsinhalte von Entwurfspl{\"a}nen im konstruktiven Ingenieurbau in Teilzeichnungen zerlegt werden k{\"o}nnen, denen fachspezifische Objekte des Bauwesen entsprechen. Solche Objekte sind beispiels- weise Querschnitte, Tr{\"a}ger, St{\"u}tzen und Fundamente. Diese Teilobjekte werden durch eine unterschiedliche Anzahl von Parametern festgelegt werden. W{\"a}hlt man f{\"u}r diese Parameter die entsprechendnen Fachbegriffe, so hat man durch diese die M{\"o}glichkeit die Teilobjekte auch in Datenbanken zu speichern. Neben den Sachparametern m{\"u}ssen auch zeichnungs- technische Werte, wie Maßstab, gew{\"a}hlte L{\"a}ngeneinheiten (m,cm..) und Einsatzpunkt - f{\"u}r die Lage des Teilobjektes im Gesamtplan - gespeichert werden. Zeichenmodule f{\"u}r jedes Teilobjekt k{\"o}nnen dann bei Aufruf eines bestimmten Planes aus den Daten der Datenbank die Teilzeichnungen generieren, sodaß eine Planspeicherung in der {\"u}bliche Speicherform (Speicherelemente Punkt, Linie usw.) nicht mehr erforderlich ist. Neben der reinen Darstellung k{\"o}nnen die Programmodule auch dahingehend erweitert werden, daß auch die zugeh{\"o}rigen Berechnungen durchgef{\"u}hrt werden. Die numerischen Ergebnisse wie auch die Eingabewerte werden in einem alfanumerischen Dokument abgelegt. Damit ergibt sich dann ein Konstruktionsystem f{\"u}r den Entwurf, das insbesondere die Berechnung von Varianten sehr erleichertert. In Sonderf{\"a}llen k{\"o}nnen auch die Pl{\"a}ne in ein Standard CAD Programm eingelesen werden, um allf{\"a}llige Besonderheiten interaktiv zu erg{\"a}nzen. Das relationale Modell wird weiters vorgestellt, nach dem die Zeichnungsinhalte gespeichert werden. Neben reinen Teilobjekts{\"a}tzen werden auch Tabellens{\"a}tze verwendet, um unter einem Namen mehrere numersiche Daten verwalten zu k{\"o}nnen. Es werden auch sogenannte Fort- setzungss{\"a}tze besprochen, die in Entsprechung der stark unterschiedlichen Anzahl der Objektattibute verwendet werden.}, subject = {Ingenieurbau}, language = {de} } @inproceedings{BubnerFriedrich2003, author = {Bubner, Andre and Friedrich, Torsten}, title = {Klassifikation und Definition baufachlicher Verkn{\"u}pfungstypen als Basis zur Modell{\"u}berf{\"u}hrung im konstruktiven Ingenieurbau}, doi = {10.25643/bauhaus-universitaet.283}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2834}, year = {2003}, abstract = {Die Bearbeitung von Bauprojekten erfordert ein hohes Maß an Fachwissen verschiedener Disziplinen. Dabei kommt eine Vielzahl spezialisierter Fachmodelle zum Einsatz. Zur {\"U}bernahme der Daten von anderen Planern in das eigene, neu zu erstellende Fachmodell sind die verf{\"u}gbaren Inhalte aus verschiedenen Modellen vom Fachplaner entsprechend seiner Anforderungen anzupassen und um spezifische Inhalte zu erg{\"a}nzen. Dabei ergeben sich Beziehungen, welche die Zusammenh{\"a}nge und Abh{\"a}ngigkeiten der Fachmodelle untereinander aufzeigen. Eine zugleich allgemeing{\"u}ltige sowie vollst{\"a}ndige Vordefinition des durch die Beziehungen beschriebenen Modellverbundes ist kaum m{\"o}glich. Zur rechnerinternen Abbildung erfolgt aus diesem Grund eine Zerlegung des Modellverbundes in Partialmodelle und entsprechende Verkn{\"u}pfungen. Die Beschaffenheit des Beziehungsgeflechtes h{\"a}ngt sowohl von der Qualit{\"a}t der Datenmodelle als auch von der Beschreibungsg{\"u}te der Verkn{\"u}pfungstypen, deren Definition ein hohes Maß an Fachwissen erfordern, ab. Mit einem Konzept zur Strukturierung und Zerlegung der Verbindungen in Basiselemente sowie der Integrationsm{\"o}glichkeit zu komplexeren Elementen wird eine einfachere Erstellung, Wartung und Anpassung von umfassenden baufachlichen Inhalten erm{\"o}glicht. Zur Sicherung einer hochwertigen Beschreibung des Modellverbundes ist ein an die F{\"a}higkeiten des Ingenieurs ausgerichteter Zugang zur Spezifikation und Anpassung der Beziehungsdefinitionen unverzichtbar.}, subject = {Ingenieurbau}, language = {de} } @article{vanTreeckRank2004, author = {van Treeck, Christoph and Rank, Ernst}, title = {Analysis of building structure and topology based on Graph Theory}, doi = {10.25643/bauhaus-universitaet.230}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2308}, year = {2004}, abstract = {Individual views on a building product of people involved in the design process imply different models for planning and calculation. In order to interpret these geometrical, topological and semantical data of a building model we identify a structural component graph, a graph of room faces, a room graph and a relational object graph as aids and we explain algorithms to derive these relations. The application of the technique presented is demonstrated by the analysis and discretization of a sample model in the scope of building energy simulation.}, subject = {Produktmodell}, language = {en} } @inproceedings{Palm2004, author = {Palm, Johan}, title = {Integrated Engineering Workflow focused on the Structural Engineering in the Industrial Environment}, doi = {10.25643/bauhaus-universitaet.162}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1625}, year = {2004}, abstract = {The engineering and construction industry has been slow to exploit the full potential of information technology. The industry is highly fragmented, price sensitive, risk-adverse, and profit margins are small. Each project is unique with a small amount of technological innovation opportunities to capitalise on from one project to the next. Technological innovations that have been taking place are just simulating the old traditional paper workflow. Engineering information in digital form is being conveyed using traditional paper representations, which have to be interpreted by humans before the information can be used in other applications, thereby creating 'islands of information'. It can be seen that poorly implemented IT strategies are duplicating paperwork, rather than reducing or eliminating it (Crowley et al., 2000). This paper will introduce the Integrated Engineering Workflow (IEW) concept to re-organise a structural discipline working on multi-disciplinary projects so as to maximise the advantages offered by new information technology.}, subject = {Baubetrieb}, language = {en} } @inproceedings{AldaCremersBilek2004, author = {Alda, Sascha and Cremers, Armin B. and Bilek, Jochen}, title = {Support of Collaborative Structural Design Processes through the Integration of Peer-to-Peer and Multiagent Architectures}, doi = {10.25643/bauhaus-universitaet.148}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1481}, year = {2004}, abstract = {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.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{LehnerHartmann2004, author = {Lehner, Karlheinz and Hartmann, Dietrich}, title = {Scenarios for the deployment of distributed engineering applications}, doi = {10.25643/bauhaus-universitaet.147}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1476}, year = {2004}, abstract = {Although there are some good reasons to design engineering software as a stand-alone application for a single computer, there are also numerous possibilities for creating distributed engineering applications, in particular using the Internet. This paper presents some typical scenarios how engineering applications can benefit from including network capabilities. Also, some examples of Internet-based engineering applications are discussed to show how the concepts presented can be implemented.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{MundaniBungartz2004, author = {Mundani, Ralf-Peter and Bungartz, Hans-Joachim}, title = {Octrees for Cooperative Work in a Network-Based Environment}, doi = {10.25643/bauhaus-universitaet.146}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1460}, year = {2004}, abstract = {Assuring global consistency in a cooperative working environment is the main focus of many nowaday research projects in the field of civil engineering and others. In this paper, a new approach based on octrees will be discussed. It will be shown that by the usage of octrees not only the management and control of processes in a network-based working environment can be optimised but also an efficient integration platform for processes from various disciplines - such as architecture and civil engineering - can be provided. By means of an octree-based collision detection resp. consistency assurance a client-server-architecture will be described as well as sophisticated information services for a further support of cooperative work.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{vanRooyenOlivier2004, author = {van Rooyen, G.C. and Olivier, A. H.}, title = {Notes on structural analysis in a distributed collaboratory}, doi = {10.25643/bauhaus-universitaet.145}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1451}, year = {2004}, abstract = {The worldwide growth of communication networks and associated technologies provide the basic infrastructure for new ways of executing the engineering process. Collaboration amongst team members seperated in time and location is of particular importance. Two broad themes can be recognized in research pertaining to distributed collaboration. One theme focusses on the technical and technological aspects of distributed work, while the other emphasises human aspects thereof. The case of finite element structural analysis in a distributed collaboratory is examined in this paper. An approach is taken which has its roots in human aspects of the structural analysis task. Based on experience of how structural engineers currently approach and execute this task while utilising standard software designed for use on local workstations only, criteria are stated for a software architechture that could support collaborative structural analysis. Aspects of a pilot application and the results of qualitative performance measurements are discussed.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{MeissnerRueppelTheiss2004, author = {Meißner, Udo F. and Rueppel, Uwe and Theiss, Mirko}, title = {Network-Based Fire Engineering Supported by Agents}, doi = {10.25643/bauhaus-universitaet.144}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1447}, year = {2004}, abstract = {Building design in Civil Engineering is characterized by the cooperation of experts in multiple disciplines. Close cooperation of engineers in different fields is the basis of high product quality, short development periods and a minimum of investment costs. For each building the engineers have to create a new fire engineering model. The consistent realization of the fire engineering model in all details has high demands on communication, collaboration and building models. Thereby, to preserve the related design models consistent to each other and compatible with the rules of fire engineering is a complex task. In addition, regulations and guidelines vary according to the building location, so the knowledge base must be integrated dynamically into the planning process. This contribution covers the integration of engineers and design models into a cooperation network on the basis of mobile agents. The distributed models of architectural design, structural planning and fire engineering are supported. These models are implemented as XML-based models which can be accessed by mobile agents for information retrieval and for processing tasks. Agents are provided to all planners, they are enabled to check up the distributed design models with the knowledge base of the fire protection regulations,. With the use of such an agent each planner is supported to check up his planning for accordance with the fire protection requirements. The fire-engineering-agent analyzes the design and detects inconsistencies by processing fire protection requirements and design model facts in a rule-based expert system. The possibility to check the planning information at an early state in the sense of compatibility to the fire protection regulations enables a comprehensive diagnosis of the design and the reduction of planning errors.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{SchleyMejstrikHolz2004, author = {Schley, Frank and Mejstrik, Marcus and Holz, K.-Peter}, title = {Network Based Co-operation Platform for Geotechnical Engineering}, doi = {10.25643/bauhaus-universitaet.143}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1431}, year = {2004}, abstract = {This paper describes an approach to support co-operation of experts in heterogeneous geotechnical engineering project environments during both regular execution and handling of exceptional situations. A co-operation platform is introduced which is based on a generalized information model mapping key information about the construction project, the construction process as well as the organization structure. Several tools are provided to operate the information model in a network based environment.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{EslimyIsfahanyPegels2004, author = {Eslimy-Isfahany, S. H. R. and Pegels, Georg}, title = {Net-distributed Co-operation Including Developing Countries, Practical Case Study - Iran}, doi = {10.25643/bauhaus-universitaet.142}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1421}, year = {2004}, abstract = {The scientific transfer of key technology features to developing countries, together with adequate competence, localisation and adaptation, is the primary purpose of the proposed investigation. It is evident that introducing high-level CAD design and detailing will improve the planning process in developing countries. Successful utilization of applied information technology for the planning process, however, depends on the user-interface of individual software. Therefore, to open the great opportunity embedded in CAD software for clients globally, the language and character-set barrier of traditional user-interfaces must be overcome. A proposal for a research program is given here to address such issue in favour of global civil engineering.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{HartmannMeissnerRueppel2004, author = {Hartmann, Dietrich and Meißner, Udo F. and Rueppel, Uwe}, title = {Integration of Productmodel Databases into Multi-Agent Systems}, doi = {10.25643/bauhaus-universitaet.141}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1410}, year = {2004}, abstract = {This paper deals with two different agent-based approaches aimed at the incorporation of complex design information into multi-agent planning systems. The first system facilitates collaborative structural design processes, the second one supports fire engineering in buildings. Both approaches are part of two different research projects that belong to the DFG1 priority program 1103 entitled "Network-based Co-operative Planning Processes in Structural Engineering" (DFG 2000). The two approaches provide similar database wrapper agents to integrate relevant design information into two multi-agent systems: Database wrapper agents make the relevant product model data usable for further agents in the multi-agent system, independent on their physical location. Thus, database wrapper agents act as an interface between multi-agent system and heterogeneous database systems. The communication between the database wrapper agents and other requesting agents presumes a common vocabulary: a specific database ontology that maps database related message contents into database objects. Hereby, the software-wrapping technology enables the various design experts to plug in existing database systems and data resources into a specific multi-agent system easily. As a consequence, dynamic changes in the design information of large collaborative engineering projects are adequately supported. The flexible architecture of the database wrapper agent concept is demonstrated by the integration of an XML and a relational database system.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{GebbekenBaumhauerIonita2004, author = {Gebbeken, Norbert and Baumhauer, Andreas and Ionita, Mihai}, title = {Increasing the Reliability and Performance through Automatization and Parallel Working}, doi = {10.25643/bauhaus-universitaet.139}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1397}, year = {2004}, abstract = {Re-examination of the behaviour of structures can be necessary due to deterioration or changes in the traffic situation during their lifetime. The Finite Element Method (FEM) is widely used in order to accomplish numerical analysis. Considering the development of computer performance, more detailed FEM models can be analyzed, even on site, with mobile computers. To compensate the increasing amount of data needed for the model input, measures need to be taken to save time, by distributing the work. In order to provide consistency to the model, fedback data must be checked upon reception. A local wireless computer network of ultra-portable devices linked together with a computer can provide the coordination necessary for efficient parallel working. Based on a digital model consisting of all data gathered, structural modelling and numerical analysis are performed automatically. Thus, the user is released from the work that can be automatized and the time needed for the overall analysis of a structure is decreased.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{Hartmann2004, author = {Hartmann, Ulrich C.}, title = {Collaboration in AEC Design : Web-enabling Applications using Peer-to-Peer Office Communicator}, doi = {10.25643/bauhaus-universitaet.138}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1386}, year = {2004}, abstract = {A market analysis conducted by Gartner Dataquest in August 2001 has shown the typical characteristics of the AEC design process. High volatility in membership of AEC design groups and members dispersed over several external offices is the common collaboration scenario. Membership is most times short lived, compared to the overall duration of the process. A technical solution has to take that into account by making joining and leaving a collaborative work group very easy. The modelling of roles of collaboration between group members must be based on a commonly understood principle like the publisher / subscriber model, where the individual that is responsible for the distribution of vital information is clear. Security issues and trust in the confidentiality of the system is a central concern for the acceptance of the system. Therefore, keeping the subset of data that will be published under the absolute control of the publisher is a must. This is not the case with server-based scenarios, sometimes even due to psychological reasons. A loosely bound Peer-to-Peer network offers advantages over a server-based solution, because of less administrative overhead and simple installation procedures. In a peer-to-peer environment, a publish/subscribe role model can be more easily implemented. The publish/subscribe model matches the way AEC processes are modelled in real world scenarios today, where legal proof of information exchange between external offices is of high importance. Workflow management systems for small to midsize companies of the AEC industry may adopt the peer-to-peer approach to collaboration in the future. Further investigations are being made on the research level (WINDS) by integrating the viewer and redlining application Collaborate! into a collaborative environment.}, subject = {Ingenieurbau}, language = {en} }