Bridge Design – Design Criteria and Detailed Design Process
This article introduces the unique design criteria, accessibility, technical complexity, and appeal of Japan's longest pedestrian suspension bridge, as well as the detailed design process.
Design criteria:
1. "Uniqueness"
Designing world-class bridges
- To create a landmark that Japan and Osaka can be proud of.
2. "Universal Access"
- Ensure bridges are wheelchair accessible.
- Designed to be wide enough for two wheelchairs to pass each other comfortably.
- Provide entrances accessible from both ends of the bridge.
3. "Aesthetic and technical complexity"
- Develop technically advanced, complex, and attractive designs.
- Make the bridge visually appealing and photogenic, especially when viewed from the dam.
- Establish a unique bridge that is difficult to replicate.
4. "Attractiveness to Visitors"
- Construct a bridge that will attract visitors from both within Japan and internationally.
- To provide an exciting experience that is fun, intriguing, visually appealing, and engaging.
- Design to appeal to a wide range of age groups, from children to the elderly.
5. "Movement and Excitement"
The bridge should be designed so that the vibrations are caused by cyclical motion rather than by swaying motion.
The height and movement of the bridge guarantee an experience that will excite and slightly frighten about 10% of the general public.
- Design the bridge so that pedestrians are visible from any point along it.
- Ensure a 360-degree view for people on the bridge.
6. "Structural strength"
- Guaranteeing bridges that are highly resistant to typhoons and earthquakes.
Detailed design process:
1. "Concept Design"
• "Brainstorming": Discussing with engineers who worked on the design of Europe's longest bridge, forming a team of architects, engineers, and designers to brainstorm initial ideas that meet the design criteria.
• "Sketching and Modeling": Develop sketches, 3D computer models, and physical models to visualize the bridge's shape, taking into account the landscape, accessibility, and structural requirements.
• "Feasibility Study": Conduct a preliminary analysis focusing on both technical and financial aspects to evaluate the feasibility of the proposed design.
2. "Engineering and Technical Analysis"
• "Structural Analysis": Using advanced simulation software, the bridge's response to loads such as pedestrian traffic, wind, and seismic activity is modeled.
Based on historical weather data and analysis of wind and typhoons, a Monte Carlo model will be constructed to simulate the maximum possible wind speeds through the bridge over a period of more than a thousand years.
• "Material Selection": Select materials that provide the necessary strength and durability while enhancing the visual appeal of the bridge.
• "Accessibility Features": Incorporating universal design principles and seamlessly integrating lighting and pathways for wheelchair access.
3. "Detailed Design and Specifications"
- "Dimensional Determination": The final dimensions of the bridge are determined to ensure sufficient width for wheelchair access and accessible entrances from both ends.
• "Motion Design": Design a bridge suspension system that creates controlled, cyclical motion to provide thrills and excitement.
• "Consideration of Visibility": Ensuring visibility across the entire length of the bridge and from both ends, from both safety and aesthetic perspectives.
4. Consideration for the landscape and elements that make it photogenic.
• "Visual appeal": The bridge should be photogenic and visually appealing when viewed from the dam and surrounding area, integrating design elements that are visually striking.
• "Lighting and Finishes": Select lighting concepts and finishes that enhance the bridge's appearance day and night.
5. "Safety and Durability"
• "Seismic-resistant design": Incorporating advanced engineering technologies to give bridges a highly earthquake-resistant structure.
• "Wind Resistance": Incorporating aerodynamic features and a robust fixed structure to maintain stability and safety even during typhoons.
6. "Community and Stakeholder Involvement"
• "Open consultation": Collaborate with local communities, landowners, and stakeholders to gather feedback and communicate progress and design characteristics.
• "Approval from regulatory bodies": Cooperate with regulatory bodies to obtain necessary approvals and comply with all safety and construction standards.
7. "Construction Plan"
• "Project Management": Develop a detailed project plan including timelines, budgets, and resource allocation.
• "Construction Technology": Select construction methods that ensure accuracy, safety, and efficiency.
By following this detailed design procedure, we are confident that this longest pedestrian suspension bridge in Japan will become a landmark that not only meets expectations but exceeds them, providing safety, excitement, and universal access.
Learn more about the history and characteristics of Gravitate Osaka.
GRAVITATE OSAKA BLOG
Gravitate Osaka
" GRAVITATE OSAKA " is Japan's premier activity park, featuring Japan's longest suspension bridge, and is being constructed as part of the basic development of the area around the Aigawa Dam in Ibaraki City, Osaka Prefecture.
The facility, scheduled to open in 2025 , is attracting particular attention for its longest suspension bridge in Japan, which will be installed within "Dam Park Ibakita."
Furthermore, since the opening is close to the time of the Osaka World Expo ( 2025 ), we plan to showcase cutting-edge design and technology from Ibaraki to the world.