道路连通性能震害评估方法研究

Research on Assessment Method of Road Connectivity after Earthquake

历史地震救援的经验表明,道路是抗震救灾的主要地面交通生命线,道路的破坏除了造成直接经济损失外,也直接影响相连道路的连通性能,间接影响了整个灾区路网的连通性能,从而降低了灾区交通运输效率。目前,缺乏对道路连通性能的客观、定量震害评估指标与方法。该文在复杂网络"网络效率"指标的基础上,发展了一种道路连通性能震害评估方法。首先,利用网络效率分别建立路线、路网的连通效率指标,然后根据震前、震后两个时相的路线、路网连通效率的变化,建立道路连通震害指数,评估道路连通性能的震害情况。试验表明,该方法可以有效地度量与区分不同震害情况下的道路连通性能,能够为应急救援提供定量的决策依据。

Roads are the main ground traffic lifelines for earthquake relief. Road damage after earthquakes not only causes much economic loss,but also reduces the transport efficiency. It is very important significant to timely and accurate assess road dam- age. However, some objective and quantitative indicators about road route and network connectivity are rarely presented. There- fore, an assessment method of road connectivity effectiveness after earthquakes is developed based on indicator-network efficien- cy in the complex network theory. At first,indicators for measuring road route and network connectivity are established by the network efficiency indicator. Then in terms of road network connectivity before and after earthquakes, the Road Connectivity Damage Index （RCDI） is established to assess the damage. The experiment results show that this method can effectively meas- ure and distinguish road route and network connectivity in different damage cases, and provide quantitative basis for the rescue decision-making.