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Systemic Seismic Risk Assessment of Road Networks Considering Interactions with the Built Environment

机译：考虑与建筑环境相互作用的路网系统地震风险评估

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摘要

This article presents an integrated approach for the probabilistic systemic risk analysis of a road network considering spatial seismic hazard with correlation of ground motion intensities, vulnerability of the network components, and the effect of interactions within the network, as well as, between roadway components and built environment to the network functionality. The system performance is evaluated at the system level through a global connectivity performance indicator, which depends on both physical damages to its components and induced functionality losses due to interactions with other systems. An object-oriented modeling paradigm is used, where the complex problem of several interacting systems is decomposed in a number of interacting objects, accounting for intra- and interdependencies between and within systems. Each system is specified with its components, solving algorithms, performance indicators and interactions with other systems. The proposed approach is implemented for the analysis of the road network in the city of Thessaloniki (Greece) to demonstrate its applicability. In particular, the risk for the road network in the area is calculated, specifically focusing on the short-term impact of seismic events (just after the earthquake). The potential of road blockages due to collapses of adjacent buildings and overpass bridges is analyzed, trying to individuate possible criticalities related to specific components/subsystems. The application can be extended based on the proposed approach, to account for other interactions such as failure of pipelines beneath the road segments, collapse of adjacent electric poles, or malfunction of lighting and signaling systems due to damage in the electric power network.
机译：本文为道路网络的概率系统风险分析提供了一种综合方法，该方法考虑了空间地震危险与地面运动强度，网络组件的脆弱性以及网络内部以及道路组件之间的相互作用的影响之间的关系。网络环境的内置功能。系统性能是通过全局连接性能指标在系统级别进行评估的，该指标既取决于对其组件的物理损坏，也取决于与其他系统交互而导致的功能损失。使用了一种面向对象的建模范例，其中几个交互系统的复杂问题被分解为多个交互对象，从而解决了系统之间以及系统内部的内部和相互依赖性。每个系统都有其组件，求解算法，性能指标以及与其他系统的交互关系。在塞萨洛尼基（希腊）市对道路网络进行分析时，将采用拟议的方法来证明其适用性。尤其要计算出该地区道路网络的风险，特别是关注地震事件（地震发生后）的​​短期影响。分析了由于相邻建筑物和立交桥倒塌而造成的道路阻塞的可能性，试图将与特定组件/子系统相关的可能的危险性进行区分。可以基于提出的方法扩展该应用程序，以解决其他交互作用，例如路段下方的管道故障，相邻电线杆的塌陷或由于电力网络损坏而导致的照明和信号系统故障。

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