ポストカンファレンスワークショップ: 2012年3月1日, 木曜日

08.00 -09.30 Workshop A: New techniques in seismic design for super long span bridges

Rationale:

With renewed focus on enhanced seismic design and engineering of structures, this workshop classifies the basic requirements and compliance criteria for a seismic engineering of a bridge structure. It also details on what are the minimum noncollapse requirements, seismic behaviour (ductile and non-ductile) for different ground conditions and how these parameters can be built into bridge engineering.

Discussion points:

• Compliance criteria for structures
• Seismic behaviour and measurement
• Analytical methods to estimate structural integrity
• Bridge components, deck and foundation engineering

Workshop led by:

Naeem Hussian
Director & Leader - Bridges
ARUP

09.45 - 11.15 Workshop B: How to increase load carrying capacity of existing bridges

Rationale:

The demand for higher load carrying capacity of existing bridges on road and rail networks is increasing. Application of new and efficient methods for determining higher capacity could result in lower cost for strengthening and replacement of bridges. These new methods comprises, advanced elastic and plastic limit state 3D-methods alone or in combination with probability-based safety assessment methods. The workshop will focus on experience and cases obtained and implemented on actual bridges for Road and Rail owners.

Discussion points:

• Need for higher load carrying capacity for rail/road bridges
• Comparing conventional vs. new methods to determine higher capacity
• Cost implications for owners/operators in increasing load bearing capacity
• New methods and case studies

Workshop led by:

Ib Enevoldsen
Senior Director - Infrastructure & Transport

11.30 - 13.00 Workshop C: Overcoming challenges in designing long span bridges against demanding environmental effects: River Padma Specialty Bridge

Rationale:

Padma River Crossing Specialty Bridge is designed as a road, rail and utility carrying, multi-purpose bridge in Bangladesh. At USD 3 billion, the 6.15 km long two-level steel-truss bridge (top deck to accommodate a 4-lane highway and lower deck to accommodate single-track railway) will be the most challenging river crossing fixed link project.

Discussion points:

• Cost-benefit considerations in engineering a long and speciality bridge
• Challenges in the design and construction of the bridge - environmental factors
• Coordination requirements between various asset owning departments in multipurpose bridge planning
• Importance of construction planning and project management

Workshop led by:

Dr. Robin Sham
Global Long Span and Specialty Bridges Director
AECOM

14.00 -15.30 Workshop D: How to control costs to ensure sustainable bridge construction

Rationale:

Though bridge projects are considered viable transport infrastructure options compared to other solutions, cost overlays and project delays still stretch the budgets for most regional owners and investors.

Approaching various parameters such as construction methodology, materials, sequencing and project management in a cost-benefi t basis could optimise the investment and could lead to drastic cost reduction. This workshop analyses how few monumental long span bridges in Asia were constructed within budget and costs were controlled in the design, engineering and construction phases.

Discussion points:

• Effect of efficient construction sequencing on construction costs
• Overcoming hurdles in coordination between contractor and project manager
• Identifying alternative construction materials and methods
• Handling risks in construction

Workshop led by:

Fang Zhen-ru
Executive Director
CHINA HARBOUR ENGINEERING COMPANY

15.45 -17.15 Workshop E: Current trends and techniques in Structural Health Monitoring Systems (SHMS) for bridges

Rationale:

Maintaining and monitoring the existing bridge stock is a challenge to the asset owners since they either have passed or approaching the end of the service life. This issue is complicated by the inaccessibility of the bridge components and the method of construction employed decades ago.

This workshop will detail the current trends in identifying cost-effective methods of bridge health monitoring, identifi cation of suitable instrumentation and ways of developing monitoring regimes.

Discussion points:

• Carry out design verifi cation for primary structural elements
• Checks of loadings as earthquake, strong winds, ship impact, traffi c, etc
• Fatigue, vibration, force redistribution and displacement monitoring
• Provide information for safety evaluation
• Provide necessary information for maintenance planning

Workshop led by:

Dr Jacob Egede Andersen
Head of Section & Chief Specialist
COWI

17.30 - 19.00 Workshop F: Rehabilitation of existing bridges: techniques and standardisation of procedures

Rationale:

Structural failures and lack of adequate monitoring and maintenance facilities are proving to be costly for all bridge stakeholders. Current techniques are still evolving. This workshop will present contemporary techniques in BHM and maintenance to enhance the life cycle of the asset.

Discussion points:

• Evaluating the effectiveness of structures management including bridge management systems
• Improving safety by managing risk and enhancing safe work practices and operations
• Standardising interfaces with consultants, contractors, suppliers and, research and development organisations
• Asset management strategies for structures driven by defi ned service levels and performance standards
• Optimising investment in structures

Workshop led by:

Peter Prasad
National Bridges & Structures Engineer
AUSTRALIAN RAIL TRACK CORPORATION