2017年-世界发展银行全球_Integrating_Climate_Change_into_Road_Asset_Management_76页_5mb

报告摘要

Summary of "Integrating Climate Change into Road Asset Management"

Core Content

This document discusses the integration of climate change considerations into road asset management (AM) processes. It outlines the challenges posed by climate change to road infrastructure, the need for proactive adaptation strategies, and the recommended steps for road authorities to enhance resilience and preparedness.

Main Points

Climate Change as a Disruptive Force: Climate change is affecting road infrastructure through both slow changes and extreme weather events. These changes are altering the design parameters and performance expectations of road networks, requiring a re-evaluation of traditional asset management practices.
Vulnerability and Impact: Less developed countries are particularly vulnerable to climate change impacts, which can lead to significant economic losses. Climate change events such as extreme rainfall, droughts, heat waves, and extreme wind speeds are increasing in frequency and intensity, affecting the structural integrity and functionality of roads.
Asset Management Process: There is no universal AM process, but the document adopts a framework from the International Infrastructure Management Manual (NAMS, 2011). This process includes steps such as defining requirements, forecasting demand, understanding the asset base, assessing condition, identifying risks, and developing lifecycle strategies.
Slow Changes vs. Shock Events: Slow changes, such as gradual temperature and rainfall shifts, may not be as immediately impactful as shock events, which are becoming more frequent. These events require immediate response and long-term adaptation strategies.
Recommended Actions: A series of recommended actions is provided to integrate climate change into AM practices. These include policy development, data collection, risk assessment, operational and maintenance planning, capital works strategies, and the establishment of robust information systems.

Key Information

Climate Change Events and Risks:
- Extreme rainfall events: Overtopping, wash away, seepage, hydrodynamic pressure, traffic hindrance, and safety issues.
- Seasonal and annual average rainfall: Impact on soil moisture, structural integrity, and risk of floods.
- Higher maximum temperature and heat waves: Pavement integrity issues, thermal expansion, and adverse health impacts.
- Droughts: Wildfires, mudslides, substructure consolidation, and unavailability of water for construction.
- Extreme wind speed: Bridge stability, windborne debris, and damage to signs and lighting.
Preparation and Response:
- Prior to Events: Road authorities should identify key routes, define funding agreements, develop predictive models, revise design guides, retrofit infrastructure, and trial new materials.
- During and Immediately After Events: Focus is on monitoring, road closures, and emergency reinstatement to ensure safety.
- Post Events: Opportunities exist to build back better, update predictive models, and refine processes based on collected data.
Disaster Response and AM Process Integration:
- The response to climate change is largely pre-planned, with only a few activities occurring during and after events.
- The best time to address climate change is before it becomes a crisis, emphasizing the importance of long-term planning and proactive measures.
Policy and Governance:
- Executive-level support is crucial for successful integration of climate adaptation into AM.
- Governance structures should facilitate the inclusion of climate change in major rebuilding programs.
- Funding and legislative strategies must account for climate adaptation and disaster response.
Data Management:
- Asset management data should be comprehensive, up-to-date, and geospatially referenced.
- Data collection should focus on identifying vulnerabilities to climate impacts.
- Rapid data collection techniques and secure systems are essential for effective AM.

Conclusion

The document emphasizes that while climate change is a global issue, its impact is not evenly distributed. Vulnerable regions, especially those with limited resources, face greater risks. Integrating climate change into asset management is not only necessary but also beneficial for long-term resilience and cost-effectiveness. The recommended approach includes a combination of policy, planning, data management, and risk assessment to ensure that road networks are prepared for both gradual and sudden climate changes.

Key Recommendations

Develop AM Policies: Specifically address climate change in AM policy statements and define planning horizons.
Revise Design Guides: Incorporate changing climatic conditions into design standards.
Forecast Future Demand: Integrate climate change impacts into future demand forecasts.
Enhance Data Collection: Ensure data is geospatially referenced and includes climate-related vulnerabilities.
Improve Resilience: Implement measures to enhance the resilience of road networks, including retrofitting and the use of new materials.
Risk Management Integration: Integrate risk and vulnerability assessments into organizational risk management frameworks.
Establish Resilient Systems: Develop and maintain resilient information systems and data security plans.
Community Involvement: Involve communities in decision-making processes to ensure that climate adaptation measures are effective and accepted.