Study on the Layout of Miniature Fire Stations in Ancient Towns Based on Multi-Objective Optimisation and Cost-Benefit Analysis
Miniature fire stations are often used for firefighting in old cities,which contain a large number of wooden buildings with a high fire risk.Unlike the traditional fire station siting problem,the difficulty in designing micro fire sta-tions in old cities is to consider the connectivity of the road network while finding the optimal fire station layout(in-cluding location and number)with limited investment.To address this problem,this paper proposes a study on the lay-out of micro fire stations in old cities based on multi-objective optimisation and cost-benefit analysis.First,an undi-rected map of the roads in ancient towns is drawn and the optimal paths are calculated to obtain the coverage matrix of fire station locations using Dijkstra's algorithm;then,the optimisation problem with the objectives of maximum cover-age and minimum number of monitoring points is constructed using accessibility to the 3 min road network as the con-straint and solving the optimal fire station locations by a non-dominated genetic algorithm;finally,the optimal num-ber and layout of fire stations are determined by analysing the relationship between cost and quantity.The method is il-lustrated with an example of an ancient city in southwest China.Under the condition of setting 7 fire stations,The lay-out plan presented in this article reduces one station compared to the active plan,while increasing coverage by 7.5%,and the results prove that the proposed method can effectively confirm the fire station location set with the most econo-my and the largest coverage.
miniature fire stationsmulti-objective optimisationcost-benefit analysisancient town complexes
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