Application of BIM coordination technology to HSR Changhua station
© Lee et al.; licensee BioMed Central. 2015
Received: 6 March 2014
Accepted: 5 October 2014
Published: 18 February 2015
The arising trend of building information modeling technology application with innovative and revolutionary approach has changed the workflow and deliberation in A/E/C industry. By considering the condensed schedule of the project, operation safety, and information correctness during design and construction stages, Taiwan High Speed Rail Corporation (THSRC) brings BIM technology into Changhua Station construction project. The accumulated massive information helps engineers to coordinate design information among different expertise (architecture, structure, MEP, etc.) into BIM model at earlier phases. The effectiveness of BIM coordination technology increases the design quality and reduces significantly the conflicts of various interfaces. Three-dimension visualized interface increases the problem solving efficiency. During construction stage, construction information is integrated by the model to enhance fluency of construction process among different construction sectors. Application of BIM coordination technology reduces information gap, enhances construction quality and meets the schedule.
Design concept of Changhua station
Tian Zhong means “the center of the fields” in Chinese, Changhua is famous for its yearly flora exposition and is known as the county of flora. Therefore flora is the main design concept of Changhua high speed rail station.
The columns in the lobby combines the flower image, opening and stretching like flower petals. The skylight lets in natural light and the columns are placed in a way to reflect indirect light to illuminate the lobby. Light, structure and flower are presented in harmony.
Inside the station, there is a greenhouse surrounding the station. Passengers can enjoy the green view in the station. This is one of the features of Changhua station.
Building information modeling
Integrate the curvatures of featured petal-like columns.
Complete the project under a tight schedule. The construction period is only 31 months.
Incorporate BIM integration technology at the early planning phase to reduce the errors of traditional two dimensional CAD drawings so as to reduce the chances of design changes at the construction phase and to increase the overall quality of the project.
Provide the platform of 3D visualization to detect piping clash and thus to optimize work efficiency and to reduce jobsite problems.
Incorporate the information of the architecture, electrical, mechanical facilities such as facility brands, life and maintenance schedule through BIM technology to increase the operation and management efficiency.
Taiwan High Speed Rail Corporation found the importance of integrating design outcomes of various disciplines and took it as the priority during the planning stage of the project; and, thus, BIM technology was applied for this purpose. BIM Management and Integrating Center (BIM center) of MOH and Associates was invited to provide the BIM service. Architecture, structural and MEP BIM models were created based on the design of each discipline to clarify problems and to review clashes of each discipline and between different disciplines at the early stage.
Discussion and evaluation
Application of BIM technology in design drawing integration in design phase
To perform the design concept of the graceful posture of flower blossom, it is critical to integrate the curved columns with architecture curvature and MEP. The curved structural column is the featured design of this project. The steel manufacturer pre-fabricated the steel structure of petal-like columns. BIM center provided the sections and perspective drawings generated from BIM model for the steel manufacturer to produce the curvature.
The production and application of integrated database in construction phase
The application of BIM technology for information synchronizing during the construction
The approved final version of BIM model was uploaded to the collaboration platform for THSRC and various parties to increase the efficiency of discussion. With the application of this platform, different sub-contractors and manufacturers were able to discuss and resolve potential issues consistently.
During construction, drawings of petal-like columns and the ring girder from steel manufacturer were integrated with the sections generated from BIM model to examine the curvature of each petal-like columns and to corporate with architectural and MEP models for clash detection. Feedback loop was created between steel manufacturer and THSRC.
The application of BIM technology for delivering clash report during construction
Frozen BIM model provided a virtual platform to generate different perspective views for the steel manufacturer. The elevation of the ring girder was incorporated to the perspective views to improve the communication for resolving welding and on-site assembling issues. The ring girder elevation drawings from the manufacturer could also be included into the frozen structural BIM model and steel construction drawings for finding discrepancies. For THSRC, the project outcomes have improved greatly because of the capability of on-site checking and execution. Petal-like steel column checklist is shown as follows:
The clash report and construction report generated by the frozen BIM model were provided to THSRC as a reference for reviewing the construction drawing. The clash report list is shown as follows:
Facility management and other benefits
With the demand of animation film production, the ability of data interoperability in BIM technology helped to shorten the time of high quality animation production and to increase the accuracy of animation model by providing the corresponding data.
The 4D construction sequencing simulation is one of the other benefits of BIM model. It was made by integrating the construction information such as project schedule, work flow, site access, resource, and time to simulate the construction sequence. Visualized platform enabled the owner to discuss construction issues with contractors.
BIM technology was adopted throughout the planning stage to the construction phase for Taiwan High Speed Rail, Changhua Station construction project. This platform was used to improve communication, to integrate different versions of drawings and database, and to have each team member work effectively on the same pace. Each team member’s design was coordinated to resolve interface issues and to implement clarifications on the drawings. The information gap and labeling errors were reduced significantly at the construction stage. The design delivery, construction quality, and project management were improved significantly.
Clarify the confusions between drawings (of architectural, structural and piping).
Provide solutions of conflicts of different disciplines (architecture, structure and MEP).
Create multi-discipline BIM model and provide 3D visual inspection for specific areas. Point out the problem area in advance. Reduce the blind spots of integrated 2D construction drawings.
Provide quantity reports of different disciplines for checking the quantity reports from the design team.
Provide collaboration platform for filing, database sharing and preview. Assist the management of various versions of drawings.
Help clarify the clash and difference between architectural drawing and construction drawing.
Provide the contractor relevant construction drawings and information.
Use 3D BIM model to resolve interface issues during construction.
Improve control over project progress, material control, and on-site preparation.
Provide as-built BIM model for facility management.
After completion of the project, the as-built BIM model was used for the operation and maintenance of HSR Changhua station by maintaining the useful and comprehensive information. The model was submitted according to owner and operator’s requirements in a desired format to keep high performance management and to upgrade efficiency of maintenance work. In addition to the engineering applications throughout the complete lifecycle of the building, BIM technology provides additional benefits such as assistance to the production of high-quality animation, simulation of construction progress; and providing the visualized communication platform for different sectors to understand the project portfolio in an effective way. All these benefits lead the project to a greater business value. The application of BIM technology for HSR Changhua station improves the efficiency of the project management and enhances the quality of the construction that brings the project to complete on time.
Taiwan High Speed Rail Corporation (THSRC) has commissioned Moh and Associates Inc.(MAA) to provide BIM service in the planning and consulting phases. Foremost, MAA would like to express our sincere gratitude to the directors of THSRC for their continuous support of the project. Besides, the authors would like to thank DANIEL CHU, WEN-JEN FANG, and ROGER LIN of THSRC and WEN-SHAN LIU, BEN LIN, S.C HUANG, and HSIANG-HSIANG YU of MAA for their assistance to develop this paper.
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