Seismic vulnerability assessment for water supply network based on nodes importance

The seismic vulnerability analysis for water supply network may help us find out security risks and weak links in the network, so one seismic vulnerability evaluation model for water supply network based on Monte Carlo simulation was proposed. In this model the factors that affect the seismic vulnerability of water supply network were considered together, and the nodes' vulnerability weights were defined from four aspects as follows: the importance of the water supply partition, topological free degree, water quantity and water pressure after earthquake. Then the calculation formula of the seismic vulnerability indexes for part or whole of the water supply network was provided. At last the practical application and steps were introduced using one city's water supply network as an example, the results show that the model proposed in this paper has a certain commonality and may used in seismic vulnerability analysis for water supply pipelines.