12th International Cable Supported Bridge Operators Conference
Hourly Schedule
Monday, October 7
- 9 a.m. - 10 a.m.
- Opening remarks & plenary keynote: Adaptation and the practice of design/rehabilitation of cable supported bridge in North America
- For the design and rehabilitation of cable supported bridges, it is useful to identify where there is change and whether our design practice is sufficiently adapted to keep up with change, not just for new design, but also as we extend the life of our existing long span bridges. Additionally, we have the benefit of large site‑specific data sets that we can interrogate to assess whether our design provisions and practice are consistent with direct experience. This talk will explore three areas of cable supported bridge design in some detail: Bridge aerodynamic performance and implementation of vehicular and anti‑suicide barriers Vehicular loading and the influence of overweight trucks on component design Vessel Impact and the risks posed by much larger, faster vessels. The weight of past practice, established design codes and standards, and an industry well‑tuned to existing workflows are important issues to consider. Aspects of adaptation and how it has and will influence the design/rehabilitation of cable supported bridges in North America will be explored.
-
Speakers:
Ted Zoli
Tuesday, October 8
- 1:40 p.m. - 2:55 p.m.
- Golden Gate Bridge Physical Suicide Deterrent Net System
- The $211 million Golden Gate Bridge Physical Suicide Deterrent System (SDS) Project consists of two key components: 1) the addition of approximately 385,000 square feet of specialty net that will be installed along both sides of the entire length of the approximately 1.7‑mile‑long bridge structure and 2) the replacement of the existing 8 maintenance travelers on the Suspension Bridge with 16 new travelers due to interference between the existing travelers and the new SDS supports.The suicide deterrent net system is made from marine grade stainless steel wire mesh, which is connected to galvanized HSS net support brackets, spaced typically at every 50 feet and painted to match the existing International Orange color of the Golden Gate Bridge. The net will be stretched across the support struts located 20 feet below the bridge sidewalk and extending out 20 feet. Prior to the permanent installation on the Bridge, a mock‑up of the net system must be constructed to verify certain key measurements of the net system. The existing maintenance travelers will be replaced with four sets of new Interior, Bottom, West, and East Side Travelers. These new maintenance travelers are battery powered steel travelers with variable frequency drive (VFD) controller driven wheeled trolley system. Each traveler also consists of programmable logic controller (PLC) electronic control system, battery management system including battery power supply and battery charging system. Other supporting infrastructure include replacement of the existing Maintenance Traveler Rails, installation of new Traveler Charging Platforms and Electrical Power supply. This presentation will focus on the SDS net system and provide updates to the construction of the project, highlighting the challenges of designing and constructing this system on one of the most iconic bridges in the world.
-
Speakers:
Kuan Go
