Welcome
Digital library of construction informatics
and information technology in civil engineering and construction
 

Works 

Search Results

Facilitated by the SciX project

Hits 11 to 20 of 29

Jacek Olearczyk, Mohamed Al-Hussein

Oil-Sand Construction Automation Utilizing 3D-Modeling And Animation

Abstract:

Keywords:

DOI:

Full text: content.pdf (703,518 bytes) (available to registered users only)

Series: w78:2006 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Janne Porkka, Kalle Kähkönen

Software development approaches and challenges of 4D product models

Abstract: Experiences from projects utilizing 4D have been promising. Several companies together with researchers have seen 4D applications as potential products for lucrative business. The promising business prospects have resulted in numerous more and less intuitive attempts to develop such products. This paper draws commonalities from various approaches and reviews 4D applications from the viewpoint of product models. It is considered that now it is an appro-priate time to look at the development strategies and achievements so far, and, based on lessons learned show the way forward. First the principles for reaching 4D product models are covered. Various approaches in current commercial 4D appli-cations are considered. One of the solutions used as ground information is Visual Product Chronology (VPC), devel-oped by VTT. Second the paper addresses the obvious challenges of 4D product models. There are obstacles waiting to be resolved before 4D is comprehensively harnessed for project management purposes. One of these obstacles is standardization, or more specifically the lack of it. One of the most potential formats for open BIM standard is Industry Foundation Classes (IFCs). The use of IFCs for scheduling and 4D purposes is discussed. Finally new approaches from on-going research project 4DLive are addressed; preliminary results recognized are 1) open communication protocol for application integration, and 2) building site scenery linkage to product modelling. Possibilities and benefits exist on advanced designing and marketing solutions.

Keywords: BIM, 4D, scheduling, data exchange

DOI:

Full text: content.pdf (525,317 bytes) (available to registered users only)

Series: w78:2007 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kang T-W,Hong C-H

The architecture development for the interoperability between BIM and GIS

Abstract: The purpose of this study is to propose a scalable architecture that can be supported via the BIM (Building Information Modeling) on a GIS (Geographic Information System) platform for information interoperability between various heterogeneous systems such as BIM, GIS, and FM (Facility Management). This platform requires the acquisition of information from various data sources such as IFC (Industry Foundation Classes) and DBMS (Database Management System) if a use case for facility management, energy management, and design evaluation needs to be implemented, followed by a transformation of the information into appropriate information that can represent the perspective suitable for the use case. IFC may be considered a method for information interoperability, but it has a limitation in representing information in the perspectives of the use cases. Unlike the support of information interoperability based on the existing IFC, we would like to approach the problem of GIS- and BIM-based information interoperability by separating the problem in terms of geometry and property information. The geometry information is transformed into a simplified surface model from the IFC geometry information for that visualization of a number of objects represented in the GIS. The information required for the use case perspective is extracted and transformed from the property information by utilizing ETL (Extraction, Transform, and Load). ETL is a technology that extracts, transforms, and loads information from a variety of data sources and has been used for OLAP (Online Analytical Processing) function implementation via data mining in the management engineering arena to represent perspective-oriented information. In this study, we have applied ETL from the perspective of BIM. For this purpose, we have reviewed the related study trends and derived a general use case of BIM on a GIS platform. Further, component architecture is designed to implement the use case as well as a Star Schema to represent information according to the perspective for the development of a data warehouse. On the basis of these, BGP architecture is proposed for implementing the ETL concept using BIM on a GIS platform. Furthermore, a use case for the facility management of Korea Institute of Construction Technology is implemented as a prototype to show the usefulness of the proposed architecture. Thus, in this study, we demonstrate that information required from the perspective of project stakeholders can be interoperated effectively.

Keywords: BIM,GIS,integration,interoperability,perspective representation,ETL

DOI:

Full text: content.pdf (1,258,935 bytes) (available to registered users only)

Series: convr:2013 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kangari R, Sadri S

Building construction primary task models

Abstract: This paper provides a foundation for developing an integrated conceptual data model for managing information during the life cycle of a building. The Soft System Methodology (SSM) was used to develop Issue Based (IB) and Building Construction Primary Task (BCPT) models. The IB model was found to be an effective system for presenting a conceptual organization and the interrelationships among the different subsystems of the organization. The BCPT model provides a practical framework for building construction process analysis. It defines the minimum and necessary tasks required to support the subsystems of the IB model. These two models have formed a foundation for development of a conceptual data model for information integration utilizing the IDEF1x technique.

Keywords:

DOI:

Full text: content.pdf (55,117 bytes) (available to registered users only)

Series: w78:1996 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.processing (0.013561) class.retrieve (0.001557)
Similar papers:
Sound: read aloud.

Permission to reproduce these papers has been graciously provided by the University of Ljubljana. The assistance of the editor, Prof. Ziga Turk, is gratefully appreciated.


Ke Chen, Fan Xue and Weisheng Lu

Development of 3D Building Models Using Multi-Source Data: A Study of High-Density Urban Area in Hong Kong

Abstract: There has been a world-wide interest in using 3D building models to support urban planning, design, and management. For high-density urban areas with complex topographic conditions, how to fast develop such models with adequate accuracy remains a challenge, particularly when a single data source is utilized. This study seeks to develop such quality models by integrating multi-source data including the topographic map and LiDAR data. A total of 1,361 high-rise buildings located in Hong Kong are chosen as the subjects. The topographic map is used to develop a level of detail 1 (LoD1) model of each building. The LiDAR data is then used to fine-tune building shapes, in particular roofs, so that more accurate models with LoD2 can be derived. It is found that the integration of topographic map and LiDAR data can improve the completeness and accuracy of building models. The speed and computations to operate the integration are acceptable. Future studies are recommended to achieve LoD3 building models by utilizing other data sources (e.g., semantic information of individual buildings, and points of interest).

Keywords: 3D Building Models, Lidar Data, Topographic Map, High-Density Urban Area

DOI: https://doi.org/10.24928/JC3-2017/0252

Full text: content.pdf (4,460,899 bytes) (available to registered users only)

Series: jc3:2017 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kiiski M

Product model based software for structural design

Abstract: Tekla Oy is developing a software package called Xbuild for the design and detailing of steel and concrete structures. The development focuses on two main areas: steel structure design and design of reinforced concrete structures. Accordingly, Xbuild consists of two main parts: Xsteel and Xconcrete software modules. The basic idea behind the Xbuild is to build a logical product model of the steel concrete structure. This product model is stored in a relational database and it is created by using sophisticated interactive 3D-modelling tools. All documentation needed for the manufacture and construction of the structure - drawings, material lists, NC-preprocessor files - can then be produced from the product model. Xsteel includes modelling tools for beams, columns, connections, plates, weldings, bolts and other components of a steel structure. Most of the standard components used in Finland and other European countries are stored in component libraries such as profile, connection and bolt libraries. The modelling is object-oriented, which makes the model "intelligent". Every component in the structure is an object in the product model database and objects can be connected to each other by certain rules. In practise this means that for instance when a beam is being moved, the adjoining joints will follow. Every object is stored in the database only once, which ensures the coherency of the database in all situations. The 3D-model, drawings and lists are just "views" to the database - all design modifications can only be made in the model. This way the user can be sure that all documentation of the model is always up to date. Xconcrete is based on the same principles as Xsteel. The main difference is that Xconcrete can also handle the reinforcement bars in an intelligent way by utilizing object-oriented techniques. The database structure of Xsteel and Xconcrete is relational. The contents of the database can be written out in any format specified by the user. This enables data transfer between Xbuild and any other product model based software. It is also possible to link other applications, such as strength analysis and dimensioning, production planning and cost calculation, to Xsteel by using an open linking inter- face. In addition to this, the Xbuild software modules include tools for creating user specified macros - a feature that enables users to develop own Xbuild "applications". Today Xsteel is used by several engineering and steelwork companies in Finland as well as abroad. Xconcrete is still partially under development and will be completed in the near future. As the construction process, codes of praxis etc. differ a lot in different countries, the requirements set on the software vary quite much from one country to another. Therefore the software has to be easy to adapt into different design environments. The results gained by the users show that the product model based approach is radically improving the productivity and quality of the design work. On the other hand it is clear that using a sophisticated product model based design software sets new requirements for the designers and manufacturers of structures.

Keywords:

DOI:

Full text: content.pdf (1,306,080 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.bestPractise (0.036567) class.represent (0.028935) class.analysis (0.028125)
Similar papers:
Sound: read aloud.

Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Mikkonen P, Niskanen J

Digital orthophotography and terrain modeling

Abstract: There is a growing interest in utilizing raster format data in civil engineering applications. An essential question is how to use photographs as digital reference data in geographical information system (GIS) or equivalent applications. This is possible using orthophotographical solutions. Software development has made it possible to use computerized methods in orthorectification process. This paper presents basic concepts of digital orthophotography, which include the properties of a conventional (aerial) photograph, rasterizing and orthorectification. Digital orthorectification utilizes digital terrain modelling techniques, which are discussed briefly. Some practical applications are also discussed. The result of this study presents a business oriented approach to the computerization of models for information handling in facility management. The models are designed to be expedient to future applications which is expected to be the next step.

Keywords:

DOI:

Full text: content.pdf (585,934 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.014521) class.impact (0.013996) class.commerce (0.013722)
Similar papers:
Sound: read aloud.

Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Miyamoto A, Kawamura K

Web-based database system for bridge management systems

Abstract: Careful maintenance is essential to ensure the long-term serviceability of bridges. It is thereforenecessary to establish a database which has a large capacity for storage of time-series dataincluding structural properties at construction completion, inspection records, and repair andmaintenance records, and which utilizes state-of-the-art information and telecommunicationtechnologies to allow such data to be retrieved anytime and also anywhere [1]. This paper outlinesa web-based database system developed in response to this demand. Utilizing datatelecommunication technologies such as the Internet and cellular phones which are rapidlybecoming prevalent, the system is designed to facilitate bridge maintenance in a cost-effectivemanner [2].

Keywords:

DOI:

Full text: content.pdf (4,882,945 bytes) (available to registered users only)

Series: ecce:2001 (browse)
Cluster:
Class:
Similar papers:
Sound: read aloud.


Pohl J, Myers L, Chapman A

The ICADS model in retrospect

Abstract: This paper reviews work, involving the development and implementation of a prototype working model of an intelligent computer-aided design system (ICADS), conducted at the CAD Research Unit over the past four years. In the ICADS model, images drawn by the architect are analysed in background to establish higher level architectural objects, such as spaces, windows, doors and furniture. Combined with non-geometric attributes obtained from prototypical building type and contextual site/neighborhood knowledge bases, these design objects serve as a highlevel representation of the current state of the design solution. Domain experts, functioning as intelligent design tools, continuously evaluate the current state of the progressively evolving solution model to test solution validity, confirm design program compliance and propose alternative solution strategies. Conflicts among the domain experts are resolved within a blackboard-like coordination and control system.The domain experts and the blackboard, together constituting an Expert Design Advisor, are implemented in a production rule environment utilizing a frame- based representation structure.

Keywords:

DOI:

Full text: content.pdf (1,727,109 bytes) (available to registered users only)

Series: w78:1992 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.042682) class.analysis (0.032188) class.man-software (0.029231)
Similar papers:
Sound: read aloud.

Permission to reproduce these papers has been graciously provided by Research Press of the National Research Council of Canada. The support of the editor, Dr. Dana Vanier, is gratefully appreciated.


Porkka J,Kuula T,Kähkönen K,Rannisto J

Virtual reality for meeting interaction in infrastructure construction projects

Abstract: Urban planning and infrastructure projects of varied sizes are increasingly utilizing model-based applications at planning phase. Although the use of virtual models has its advantages, there are multiple challenges that diminish their potential in project use. These challenges are related to either non-human or human topics. The non-human topics cover issues like deficient processes, practices and tools. The human-related topics include for example lack of communication and interaction between relevant stakeholders. The interaction is a key element in current design practice due to the high number of disciplines involved in design formation and decision-making. During the past years, many key stakeholders have experienced difficulties in changing the current way of working with model-based practices. Virtual reality (VR) has been found to offer promise for design visualisation to convey messages with reduced communication difficulties between stakeholders. This paper draws findings from observations in one meeting at an on-going large infrastructure construction project in Finland. In this case study, virtual reality has been used in project management meetings to facilitate communication and to support decision-making. We consider how the use of virtual reality actually influenced on group dynamics and make concluding remarks underpinning the use in a traditional meeting room environment. We have used activity theory as a framework to begin method development for observing and analysing the effects of virtual reality on interaction and related work practices. The empirical findings point out, that new visualization instruments have effects on the ‘division of labour’. Following five traditional meeting interaction characteristics showed changes at group dynamics. When virtual reality was used as a presentation tool, the interaction between participants became more balanced. Activation of all participants, most probably, leads to enhanced mutual understanding, and furthermore to better results in the whole project.

Keywords: Infrastructure construction,Virtual Reality,Meeting,Interaction,Decision making

DOI:

Full text: content.pdf (699,758 bytes) (available to registered users only)

Series: convr:2013 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


For more results click below:

 

hosted by University of Ljubljana



includes

W78




© itc.scix.net 2003
show page 1 this is page 2 show page 3 Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003