Prioritizing and Selecting Bridge Management Actions for Heightened Truck Loads and Natural Hazards in Light of Funding Allocation Patterns

根据资金分配模式优先考虑和选择针对卡车负载增加和自然灾害的桥梁管理行动

• 批准号: 1234690
• 负责人: Jamie Padgett
• 金额: $ 40万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1234690&HistoricalAwards=false
• 关键词: Prioritizing; Selecting; Bridge; Management; Actions

Effective allocation of funds for bridge management poses a key challenge nationwide, as bridges continue to deteriorate and undergo exposure to heavier permissible truck traffic which collectively aggravate their vulnerability to natural hazards. Meanwhile, public safety, industry and economic development depend upon a reliable bridge and transportation network under operational loads and post-extreme events. This project provides a transparent approach to prioritize and select bridge management actions for natural hazards in light of heightened truck loads, funding allocation patterns, and a condition of deficient structures, neglected hazard protection and limited budgets. To propel a new approach to bridge inventory management, this research will: (1) Derive surrogate models for efficient performance assessment of bridges across a network considering seismic hazards and heightened truck traffic by taking advantage of emerging statistical learning techniques. (2) Develop new prioritization approaches to rank critical bridges for upgrade that account for their vulnerability to extreme events and role within the transportation network including enabling freight flow. (3) Select mitigation actions for bridges that achieve safety and seismic hazard protection, while reflecting typical aid allocation preferences and past project experience. Through this approach, the need for risk mitigation from natural hazards such as earthquakes can be balanced with requirements for upgrade of deteriorating bridges that must sustain heavier truck traffic and freight throughput. Hence bridge management solutions can be achieved which address both operational load demands and seismic hazard protection for improved bridge network performance.This project will have a direct influence on improving public safety by protecting US bridge infrastructure subjected to natural hazards within the context of increasing operational loads and deterioration. Furthermore, interstate commerce and economic development will benefit from improved safety and efficiency of transportation infrastructure, including wise investment of scarce funds to avoid load limitations on bridges and improve connectivity and freight flow across transportation networks, even when subjected to seismic hazards. Working closely with stakeholders will help to ensure the relevance of intervention actions to address practical infrastructure challenges and promote adoption into next generation short and long-term bridge management programs, using a case study in South Carolina to test and refine the proposed bridge and network assessment, ranking, and intervention methodology. Such test bed execution and interaction with relevant stakeholders can engage students in solving real world problems and facilitate translation of the research to practice. The integrated research and education program will have a broad impact on the preparation and experiences of future engineers prepared to tackle US infrastructure challenges. Students will benefit from a multi-disciplinary research team and development activities that provide civic-minded training for engineering students to advance their participation in effective infrastructure management with heightened awareness of the socio-economic and political contexts of infrastructure improvement programs.

随着桥梁继续恶化并经历较重的允许卡车交通，有效分配桥梁管理的资金构成了一个关键的挑战，这使其对自然危害的脆弱性加剧。 同时，公共安全，工业和经济发展取决于在运营负载和超级事件下的可靠桥梁和运输网络。该项目提供了一种透明的方法，可以根据卡车负载增加，资金分配模式以及结构不足，忽视危险保护和有限的预算，对自然危害进行优先级和选择桥梁管理措施。 为了推动一种新的方法来桥接库存管理，这项研究将：（1）通过利用新兴的统计学习技术来提出替代模型，以有效地评估跨网络的桥梁性能评估。 （2）开发新的优先级方法，以对升级的关键桥梁进行排名，以解释其脆弱性对极端事件和运输网络中的作用，包括实现货运流程。 （3）针对实现安全性和地震危害保护的桥梁进行选择缓解措施，同时反映了典型的援助分配偏好和过去的项目经验。 通过这种方法，诸如地震等自然危害的风险需要减轻风险，可以与升级不断恶化的桥梁的要求保持平衡，而桥梁必须维持较重的卡车交通和货运吞吐量。因此，可以实现桥梁管理解决方案，以解决运营负荷需求和地震危险保护，以改善桥梁网络性能。该项目将通过保护在增加操作负荷和恶化的背景下保护美国桥梁基础设施，从而直接影响改善公共安全。 此外，州际贸易和经济发展将受益于提高运输基础设施的安全性和效率，包括明智的投资稀缺资金，以避免桥梁上的限制并改善交通网络的连通性和运费，即使受到地震危害。 与利益相关者紧密合作将有助于确保使用南卡罗来纳州的案例研究来测试和完善拟议的桥梁评估，排名和干预方法，以解决实际基础设施挑战并促进对下一代短期和长期桥梁管理计划的采用的相关性。 这种测试床的执行和与相关利益相关者的互动可以使学生参与解决现实世界中的问题，并促进研究进行练习。综合研究和教育计划将对准备应对美国基础设施挑战的未来工程师的准备和经验产生广泛的影响。 学生将受益于多学科研究团队和发展活动，这些活动为工程学生提供了公民意识培训，以提高他们对基础设施改进计划的社会经济和政治背景的认识，从而提高他们参与有效的基础设施管理。