Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-148 Konferenzveröffentlichung Alda, Sascha; Cremers, Armin B.; Bilek, Jochen Support of Collaborative Structural Design Processes through the Integration of Peer-to-Peer and Multiagent Architectures 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. 2004 urn:nbn:de:gbv:wim2-20111215-1481 10.25643/bauhaus-universitaet.148 Professur Informatik im Bauwesen OPUS4-147 Konferenzveröffentlichung Lehner, Karlheinz; Hartmann, Dietrich Scenarios for the deployment of distributed engineering applications 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. 2004 urn:nbn:de:gbv:wim2-20111215-1476 10.25643/bauhaus-universitaet.147 Professur Informatik im Bauwesen OPUS4-146 Konferenzveröffentlichung Mundani, Ralf-Peter; Bungartz, Hans-Joachim Octrees for Cooperative Work in a Network-Based Environment 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. 2004 urn:nbn:de:gbv:wim2-20111215-1460 10.25643/bauhaus-universitaet.146 Professur Informatik im Bauwesen OPUS4-145 Konferenzveröffentlichung van Rooyen, G.C.; Olivier, A. H. Notes on structural analysis in a distributed collaboratory 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. 2004 urn:nbn:de:gbv:wim2-20111215-1451 10.25643/bauhaus-universitaet.145 Professur Informatik im Bauwesen OPUS4-4033 Konferenzveröffentlichung Vîlceanu, Victor; Abrahamczyk, Lars; Morgenthal, Guido Nonlinear Analysis of Structures: Wind Induced Vibrations 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. 183 urn:nbn:de:gbv:wim2-20191122-40337 10.25643/bauhaus-universitaet.4033 Institut für Konstruktiven Ingenieurbau (IKI) OPUS4-144 Konferenzveröffentlichung Meißner, Udo F.; Rueppel, Uwe; Theiss, Mirko Network-Based Fire Engineering Supported by Agents 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. 2004 urn:nbn:de:gbv:wim2-20111215-1447 10.25643/bauhaus-universitaet.144 Professur Informatik im Bauwesen OPUS4-143 Konferenzveröffentlichung Schley, Frank; Mejstrik, Marcus; Holz, K.-Peter Network Based Co-operation Platform for Geotechnical Engineering 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. 2004 urn:nbn:de:gbv:wim2-20111215-1431 10.25643/bauhaus-universitaet.143 Professur Informatik im Bauwesen OPUS4-142 Konferenzveröffentlichung Eslimy-Isfahany, S. H. R.; Pegels, Georg Net-distributed Co-operation Including Developing Countries, Practical Case Study - Iran 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. 2004 urn:nbn:de:gbv:wim2-20111215-1421 10.25643/bauhaus-universitaet.142 Professur Informatik im Bauwesen OPUS4-283 Konferenzveröffentlichung Bubner, Andre; Friedrich, Torsten Klassifikation und Definition baufachlicher Verknüpfungstypen als Basis zur Modellüberführung im konstruktiven Ingenieurbau Die Bearbeitung von Bauprojekten erfordert ein hohes Maß an Fachwissen verschiedener Disziplinen. Dabei kommt eine Vielzahl spezialisierter Fachmodelle zum Einsatz. Zur Übernahme der Daten von anderen Planern in das eigene, neu zu erstellende Fachmodell sind die verfügbaren Inhalte aus verschiedenen Modellen vom Fachplaner entsprechend seiner Anforderungen anzupassen und um spezifische Inhalte zu ergänzen. Dabei ergeben sich Beziehungen, welche die Zusammenhänge und Abhängigkeiten der Fachmodelle untereinander aufzeigen. Eine zugleich allgemeingültige sowie vollständige Vordefinition des durch die Beziehungen beschriebenen Modellverbundes ist kaum möglich. Zur rechnerinternen Abbildung erfolgt aus diesem Grund eine Zerlegung des Modellverbundes in Partialmodelle und entsprechende Verknüpfungen. Die Beschaffenheit des Beziehungsgeflechtes hängt sowohl von der Qualität der Datenmodelle als auch von der Beschreibungsgüte der Verknüpfungstypen, deren Definition ein hohes Maß an Fachwissen erfordern, ab. Mit einem Konzept zur Strukturierung und Zerlegung der Verbindungen in Basiselemente sowie der Integrationsmöglichkeit zu komplexeren Elementen wird eine einfachere Erstellung, Wartung und Anpassung von umfassenden baufachlichen Inhalten ermöglicht. Zur Sicherung einer hochwertigen Beschreibung des Modellverbundes ist ein an die Fähigkeiten des Ingenieurs ausgerichteter Zugang zur Spezifikation und Anpassung der Beziehungsdefinitionen unverzichtbar. 2003 urn:nbn:de:gbv:wim2-20111215-2834 10.25643/bauhaus-universitaet.283 Professur Informatik im Bauwesen OPUS4-141 Konferenzveröffentlichung Hartmann, Dietrich; Meißner, Udo F.; Rueppel, Uwe Integration of Productmodel Databases into Multi-Agent Systems 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. 2004 urn:nbn:de:gbv:wim2-20111215-1410 10.25643/bauhaus-universitaet.141 Professur Informatik im Bauwesen