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A H Oti, W Tizani, A Jaly Zada

A BIM Extension for Sustainability Appraisal of Conceptual Structural Design of Steel-Framed Buildings

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Series: w78:2014 (browse)
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Alekhin V,Khanina A

The conception of making decision support system introduction into building structures design practice

Abstract: The paper discusses introduction of artificial intelligence into structural engineering practice. The necessity of this paper is accelerated by the information base (IB) and decision support systems exigency, as some standards are not completely designed and there is no statistical information on faults, defects and damage to various buildings. The article suggests creating a decision support system for the optimal structural design of buildings that takes into account a risk of a propagating rupture. The article describes possibilities of a decision support system, the stages of its development and structure. Conceptual solution of the proposed decision support system for the analysis of structures is illustrated by designing trade and business centre high-rise building. The system is based on a knowledge base, which is created during its development and can be updated and expanded with the advent of new codes of practice and new structural design recommendations. Expert system will be built on the basis of clear rules and recommendations from foreign and Russian codes of practice, as well as European standards, and international occurrences of buildings accidents. Optimization of structural elements is performed on the basis of a genetic algorithm. The effect of various genetic operators on the performance of the algorithm is investigated. A model of a genetic algorithm for optimization of steel structural elements is developed. The work is the attempt to create a complex approach to the structural design: the user can not only study the normative documentation, get advice, study the examples of calculation, but also take advantage of the proposed programs for the optimization of the design decisions. It is expected that expert’s knowledge on the analysis of buildings incorporated in expert system will improve the quality of the design, and as a consequence, the reliability of structures.

Keywords: decision support systems,expert systems,optimum design,propagating rupture,genetic algorithm

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Series: convr:2013 (browse)
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Alexander J, Coble R, Crawford J, Drogemuller R, Leslie H, Newton P, Wilson B, Yum Kwok-Keung

Information and communication in construction : closing the loop

Abstract: Both nationally and internationally, the architecture, engineering and construction (AEC) sector is highly fragmented : it is dominated by small and medium-sized enterprises (SMEs), the nature of information and knowledge can be dispersed among firms and organisations, and consortia are frequently formed from geographically dispersed firms. In recognition of the potential improvements to be gained through an integrated approach to project information used throughout the design, documentation, construction and operation processes, substantial research is underway in Australia to "close the loop" of information flows between designers and constructors. The paper will explore and discuss both the technology platform in terms of information and communications technology (mobile, high-speed and wide area networking linking the design and engineering offices with the construction site) and the information platform in terms of the content of communications between project stakeholders and the requisite information (traditional spatial as well as non-spatial data) of key concern to the stakeholders at various stages of the project lifecycle. The paradigm shift that has occurred over recent years from stand-alone personal computing (which reinforced fragmentation) to mobile and Wide Area networked computing now provides a platform capable of promoting integration, accessibility and co-operation within the sector with attendant gains in efficiency. A minimum requirement to achieve these gains is access to the right information (not just simple data) at the desired level of scale and detail for a particular stakeholder’s view - information which once collected can be stored and refined and then held for use elsewhere on the project without loss and without the need for subsequent re-entry. The information needs to be available quickly and easily, that is at the right time and in the right location for maximum benefit and project efficiency. Demonstration collaborative systems to support interactive Computer Aided Design and information exchange between project stakeholders such as architects, various engineers (electrical, hydaulic, mechanical, structural) and project managers, in an innovative collaborative manner have become available to bring dispersed project members together electronically. Such systems allow project members attached to a network to undertake a range of information access and exchange from simple e-mail; through on-site access to central project data sources via handheld computers; right through to the use of optional live (or pre-recorded) video to enhance collaboration. Using communications infrastructure, this functionality can be shared in various ways - in a corporate-wide environment between regional and/or interstate offices within a company, or in a consortium situation (between offices of a consortium working together on a specific construction project). The questions then arise as to how such systems fit into industry practice, and how the industry might adapt to embrace new opportunities provided by such technological advances. Ease of access to up-to-date, accurate project information for a range of project stakeholders is being extended through research in the US and Australia to close the loop between some of the stakeholders, and this will be discussed in detail in the paper. As well, the progress of industry-based support for a level of interoperability for building and construction information by organisations such as the International Alliance for Interoperability (IAI Australasian chapter) will also be discussed, plus the likely impact of the adoption of Industry Foundation Classes in the Australian building and construction industry in areas such as the design life for buildings based on durability of materials.

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Full text: content.pdf (719,511 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.057235) class.environment (0.023003) class.synthesis (0.022896)
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Permission to reproduce these papers has been graciously provided by Royal Institute of Technology, Stockholm, Sweden. The assistance of the editors, Prof. Bo-Christer Björk and Dr. Adina Jägbeck, is gratefully appreciated.


Alonso J M, Alvarruiz F, Hernandez V, Vidal A M

HPC in the building construction sector

Abstract: In the context of the HIPERCOSME project (1) (ESPRIT project 20059), the Universidad Politecnica de Valencia (UPV) in collaboration with Spanish partners, developed a new High Performance Computing (HPC) demonstrator to calculate Reinforced Concrete Building Structures. Starting from a sequential software package, the objective of that project was to develop a portable parallel software package, able to cope with large scale problems and more realistic models (more information could be obtained in http://wwwcopa.dsic.upv.es/copa_eng.html). The performance of the prototype was analysed by means of a test battery composed of 4 real buildings. The performance of the prototype was compared to that of the original sequential package, showing that the former was from 20 up to 60 times faster than the latter. Besides, since a trial and error process must be carried out, the best and cheapest structural solution can be obtained. This leads to a reduction of the cost of the constructive elements and an increase in safety. On the other hand, and as a consequence of the code performance, a 3D approach to the problem of computing the building structure can be performed. Hardware and software requirements for this prototype are very common.The parallel platform can be a cluster of Ethernet linked PC's running under an easily available operating system such as LINUX (public domain) and the PVM passing message environment (public domain also). Moreover, the application is portable and can be run on other computers and parallel systems. Thus, in the context of the project, five Workshops were organised to promote the results in the European regions where the project partners belonged to. In these Workshops, Demonstration Actions were carried out with the presence of different small and medium size construction enterprises of each region. Co-operation among the partners led to contacts with new construction companies interested in the HPCN framework. As a consequence, six Assessment Studies were developed with European construction companies from Spain, Portugal, France and Greece, in order to understand the needs of the European market. UPV is the Valencian Community node of HIPERTTN. This technological Transfer Node is part of the METIER action in the HPCN PST activities of the IV ESPRIT Programme. TTN's try to stimulate the technology transfer and dissemination of the results of the HPCN projects in Europe. As a consequence, a Construction Sector Group has been recently created in this TTN Network. In the full paper, we will describe the technical work developed in the project, both from the point of view of the computational tools and the experience of transference of technology to the Construction Sector.

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Full text: content.pdf (51,870 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.social (0.030939) class.bestPractise (0.026703) class.communication (0.025338)
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Permission to reproduce these papers has been graciously provided by Royal Institute of Technology, Stockholm, Sweden. The assistance of the editors, Prof. Bo-Christer Björk and Dr. Adina Jägbeck, is gratefully appreciated.


Amor R W, Hosiung J G

Multi-disciplinary views for intqrated and concurrent design

Abstract: The definition and implementation of user views is likely to be a major factor in the success of the ISO-STEP standard for computer-based representation of building components and their inter-connection. The development of a method for describing user views to a particular model is also likely to increase the usage of existing design tools. Currently, the arcane languages and the detailed knowledge required of the physics and terminology of the specific domains of many of these tools limit their use by designers. This paper addresses these issues by describing a system that can present information from a base computer model of a building to a given user. The language and level of detail of the system are directed at the needs and understanding of the user. This system allows multiple concurrent views to the base model, each view tailored to a particular discipline (eg, architect, structural engineer, services engineer, etc) and further tailored to meet the specific needs of the particular user in terms of understanding of the various disciplines and the level of information required. Used with a system that integrates various design tools through a computer based building model, this system will offer users information from a range of design tools at a level that they can comprehend.

Keywords: multi discipline views; product modelling; user interaction

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Full text: content.pdf (625,133 bytes) (available to registered users only)

Series: w78:1993 (browse)
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Permission to reproduce these papers has been graciously provided by the National University of Singapore. The assistance of the editors, particularly Prof. Martin Betts, is gratefully appreciated.


Andreas Niggl, Ernst Rank, Ralf-Peter Mundani, and Hans-Joachim Bungartz

A Framework For Embedded Structural Simulation: Benefits In Building Design

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Full text: content.pdf (1,910,186 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Andrej Tibaut, Danijel Rebolj

TOWARDS METHODOLOGY FOR HARMONIZATION OF SEMANTICALLY DIFFERENT BIM's

Abstract: Research focus of the paper are heterogeneous information systems. Heterogeneity within a set of software applications can be attributed to the fact that their collaboration is hindered due to the conflicts in software architecture, communication protocols and/or data representation. General interconnectivity and emerging interoperability have caused the fall of mainframe-based systems, which in turn led to variety of information systems with local data representations, communication protocols and software architectures. Today these information systems need to collaborate in different engineering projects. Existing approaches, such as common framework, integration with standard scheme and data mediation, try to diminish the undesired effects within heterogeneous systems. The approaches are indeed successful because they eliminate all conflicts at design time. This way collaborating applications have to abandon their local data views. In this paper heterogeneity is regarded as a property of an information system while disharmony of an information system is defined as a state of the system. Further, structural, semantical and functional disharmony is defined as part of overall information systems’s disharmony. As a consequence a new methodology called DRAGOn (Disharmony Resolving with Agents and Ontology) is proposed. The methodology aims to dynamically resolve structural and semantical disharmony by preserving applications’ local data views. Another novelty is the definition of conceptualization for structural and semantical disharmony (Disharmony ontology) and the use of software agents. Disharmony ontology is specified in OWL. The agents use the ontology for resolving of structural and semantical conflicts between applications at runtime. Agents communicate via shared communication space based on Java technology. The mediation is incremental, which means that agents are able to build their local ontologies. The ontologies are used as persistent meta-data repositories of concepts (structure and semantics) that are captured from applications during runtime.Extensive applicability of the DRAGOn methodology is expected in information system clusters with rich and complex data content, namely management of construction projects.

Keywords: Interoperability, building information model, quality of semantic and structure, semantic and structural difference, mediation, ontology

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Full text: content.pdf (323,448 bytes) (available to registered users only)

Series: w78:2008 (browse)
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Ayako Yasaka, Hiromi Kataoka, Kou Kasima, Makoto Takeda, Masato Usami, Nobuyoshi Yabuki, Norihide Matumoto, Satoru Furukawa, Yoshihiro Mogi, Yoshinobu Adachi

The Development Of A Reinforced-Concrete Structural Model In IFC Specification

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Series: w78:2006 (browse)
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Badrah M K, MacLeod I A, Kumar B

Development tools for computer-aided design applications in structural engineering

Abstract: This paper reviews some development tools for CAD applications in structural engineering. These tools include spreadsheets, database applications, object-oriented applications, graphics-based applications and neural networks applications. The paper compares these tools against some criteria including standards representation capability, ease of development, suitability for large-scale systems, suitability for in-house software development, maintenance and extensibility capability, integration with other CAD applications, support for non-standard design. Recommendations for both in-house software developers and commercial software developers are given.

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Full text: content.pdf (189,496 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.051037) class.analysis (0.047134) class.software development (0.031381)
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Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Bakkeren W J C

Integrating structural design and analysis through product modelling

Abstract: Application of information technology in the realisation of concurrent engineering is essential (although not sufficient by itself. A research issue in the realisation of computer supported concurrent engineering is the sharing of information between computer applications. This sharing can be achieved with product models . In the structural engineering process, two kinds of information sharing can be distinguished: the sharing with other disciplines and the sharing within the discipline (between structural design and analysis). These two kinds of sharing require two kinds of product models: a model to integrate disciplines (a kernel model) and a model to integrate activities within the discipline (a discipline view model). This paper describes a kernel model for the integration of disciplines in the building process and a view model for the integration of the activities in the structural engineering process.

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Full text: content.pdf (1,752,925 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.034075) class.represent (0.011743) class.processing (0.005529)
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Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


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