Quantifying the Seismic Resilience of the Transportation Network in the Lower Mainland, BC

鉴于温哥华大地震的预期，以及当地通勤和商业交通的性质，每天有超过900，000辆汽车穿越几个河流过境点和超过678公里的主要道路，本研究项目将与当地，区域和联邦合作伙伴一起研究卑诗省低陆平原交通网络的抗震能力。低陆平原的地震活动不仅会影响到遭受地震物理影响的直接地区，而且会产生更广泛的影响，因为该地区的交通网络对省、联邦和国际的供应链和贸易至关重要。本项目将开发多式联运系统的生活网络分析模型（即，依赖于道路基础设施的模式），以检查大地震的影响。开发一个网络分析模型，该模型可用于各种地震情景，以评估关键结构部件的响应（例如，桥梁、挡土墙等），相互依存的基础设施以及对道路和旅行时间的影响将是该区域的一项新工作。具体而言，通过该项目获得的新技术知识将用于：（1）确定相互依存关系，并制定政策建议，以提高区域抗震能力;（2）优先考虑关键结构部件的修复工作;（3）通过计算测试当前应急程序的有效性。此外，这项工作的合作伙伴团队将利用研究结果，通过以下方式提高社会的抗震能力：（1）减少通勤者的交通中断，（2）努力确保货物的可靠运输和供应链的弹性，以及（3）通过应急规划改善恢复时间。改进在发生地震紧急情况时整个区域的人员流动计划将有助于建设一个更有复原力的社会。

In anticipation of a major earthquake in Metro Vancouver and given the nature of local commuter and commercial traffic, with over 900,000 daily vehicle trips across several river crossings and over 678 km of major roads, this research project will examine the seismic resilience of the transportation network in the Lower Mainland, BC, in partnership with local, regional, and federal partners. Earthquake activity in the Lower Mainland affects not only the immediate area where the physical impacts of an earthquake are experienced but has wider effects because the region's transportation network is critical to the supply chain and trade provincially, federally and internationally. This project will develop a living network analysis model of the multi-modal transportation system (i.e., modes that rely on road infrastructure) that examines the effects of a major earthquake. Developing a network analysis model that can be subjected to a wide range of earthquake scenarios to evaluate the response of critical structural components (e.g., bridges, retaining walls, etc.), interdependent infrastructure, and impacts on pathways and travel times will be a novel endeavour for the region. Specifically, the new technical knowledge gained through this project will be used (1) to identify interdependencies and develop policy recommendations for enhancing regional seismic resilience, (2) to prioritize rehabilitation efforts of key structural components, and (3) to computationally test the effectiveness of current emergency procedures. Further, the team of partners for this work will use the results of the study to improve societal seismic resilience by (1) reducing traffic disruptions for commuters, (2) working to ensure reliable movement of goods and resilience of the supply chain, and (3) improving recovery time through emergency planning. Improving plans for the movement of people across the region in the event of an earthquake emergency will contribute to a more resilient society.