Study on evaluation method of anti-disaster performance of riverside buildings in mountain region under action of earthquake and flood
Southwest China is an area prone to earthquakes,with dense river networks,high mountains and deep valleys,and abundant rainfall.Earthquake in flood season may be accompanied by rainstorm and flood.Riverside buildings in mountainous areas are at risk of being affected by earthquake and flood successively.In this paper,based on Bayesian network model,the probability calculation method of earthquake-landslide-dammed lake flood disaster chain is proposed for the riverside buildings in the southwest mountain area.Considering the flood hazard,the environmental sensitivity and the interaction between flood and buildings,the index of building flood exposure is introduced.The flood hazard analysis model of riverside buildings is established,and the damage analysis of earthquake-damaged structures under the impact of flood is realized.Finally,the evaluation method of multi-hazard resistance of riverside buildings under the successive action of earthquake and flood is established.The analysis results of the example show that the damage of earthquake damaged buildings under flood impact is significantly related to the spatial location and environmental conditions of the buildings.The cumulative damage caused by post-earthquake floods to earthquake-damaged structures cannot be ignored.The method in this paper can effectively predict the damage of riverside buildings in southwest China under the successive action of earthquake and flood.
successive action of earthquake and floodriverside buildingsmulti-hazardsdamage assessment
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