Demand estimation of emergency shelters based on setting earthquake scenarios:a case study of Hedong District,Tianjin City
Earthquake emergency shelters are crucial for improving the ability to prevent and con-trol earthquake disaster risks.However,existing methods for estimating the demand for these shelters often fall short of addressing the current needs for earthquake disaster risk prevention and control.This study proposes a new method for estimating emergency shelter demand,using the Hedong District of Tianjin City as a case study.The method is based on fine-grained and fun-damental data.Initially,the population was spatialized using detailed building data.Subsequent-ly,calculation methods were developed to estimate the number of temporary and long-term evac-uees under three earthquake scenarios with different seismic intensities,all based on single build-ing data.The feasibility of this method was verified in the study area,and the corresponding esti-mation results for emergency shelter demand were presented for the three earthquake scenarios.The results show that the existing temporary and long-term shelters in the study area are insuffi-cient to meet the needs in the event of earthquakes with fortification intensity and rare intensity.
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