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首页> 外文期刊>Journal of aerospace engineering >Traffic Performance Assessment Methodology of Degraded Roadway Links Following Hazards
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Traffic Performance Assessment Methodology of Degraded Roadway Links Following Hazards

机译：危险后降解道路环路的交通绩效评估方法

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Posthazard traffic networks are often disrupted, not only because of direct impacts on transportation infrastructure but also because of indirect impacts originating from the interdependent nature of infrastructure systems and environments. These indirect impacts include roads blocked by debris from adjacent buildings, traffic accidents, or fallen trees or light poles. For all these scenarios with partially blocked roads and bridges following extreme events, traffic capacity and travel time are very different what they are with intact road infrastructures and, therefore, become hard to predict. A new simulation methodology of the traffic performance of partially blocked roadway and bridge links due to hazardous events is proposed in this paper. The methodology was based on improved microscopic-scale traffic flow simulation techniques that can be applied to degraded road/bridge links with various types of obstacles (different sizes, numbers, and distributions). Following validation with the published results of traffic congestion induced by a work zone, two typical partially blocked scenarios resulting from infrastructure damage and accidents were numerically analyzed to demonstrate the feasibility of the application of the methodology to the traffic performance prediction of disrupted roadways due to extreme events. Parametric studies, such as the impact of truck proportion, blockage configuration, and traffic control measures, were also conducted. It was found that the proposed framework can predict the traffic performance of degraded transportation systems due to various causes, which could contribute to a wide array of future studies, such as community resilience modeling, emergency response and evacuation planning, and so forth.
机译：Posthazard交通网络经常被扰乱，不仅是因为对运输基础设施的直接影响，而且因为源自基础设施系统和环境的相互依存性质的间接影响。这些间接影响包括由邻近建筑物，交通事故或倒下的树木或灯光堵塞的道路。对于所有这些方案，具有部分封锁的道路和桥梁之后的极端事件，交通容量和旅行时间与完整的道路基础设施完整的方式非常不同，因此变得难以预测。本文提出了由于危险事件由于危险事件而面临的巷道和桥接链路的新仿真方法。该方法基于改进的微观尺度交通流量模拟技术，其可以应用于具有各种类型的障碍物（不同尺寸，数字和分布）的降级的道路/桥接链路。随着工作区诱导的交通拥堵结果验证，在数值上分析了由基础设施损坏和事故产生的两个典型的部分阻断场景，以证明该方法应用于由于极端的扰动道路的交通绩效预测的可行性事件。还进行了参数研究，例如卡车比例，阻塞配置和交通管制措施的影响。结果发现，拟议的框架可以预测由于各种原因导致降级运输系统的交通绩效，这可能导致广泛的未来研究，例如社区恢复性建模，应急响应和疏散规划等。

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