Optimized Schedule Planning Models for Emergency Shelters Construction

In terms of efficiency assessment,the welfare utility of emergency shelters based on DEA (data envelopment analysis) efficiency was firstly defined as the sum of service capacity,accessibility and safety level.Then taking the total welfare utility of emergency shelters in the whole construction period as optimization objective function,the optimized schedule planning models without and with consideration of user preference for emergency shelters construction was developed to optimize how many emergency shelters and which one should be constructed in specific year during construction period.The case study reveals that the two models are effective but with different advantages respectively.The model without consideration of preference can maximize welfare utility but being short of flexibility to meet actual needs and constrains.While the other model can make a more practical schedule but suffering from some loss of welfare utility.Selection of a suitable model depends on application objectives.