秦巴山区历史文化街区建筑综合防灾评估研究OA北大核心

The Qinba Mountains have become a highland for disaster prevention,reduction,and relief due to their unique geomorphological features and climatic characteristics.The buildings in the historical and cultural blocks,as the smallest unit of spatial value,are the main carriers of potential safety hazards.Based on the con-cept of comprehensive disaster prevention,the subjective and objective factors that cause the unsafety of buildings in the historical and cultural blocks of the Qinba Mountains are fully considered.A comprehensive disaster preven-tion assessment system is constructed from two levels as individual buildings and building clusters,and three di-mensions as the building noumenon,affiliated structures and the building environment.The Hengkou Old Street,a fourth-batch historical and cultural block in Shaanxi Province,is used as a case study.The results show that there are significant differences in the disaster prevention of the building noumenon,affiliated structures,and the environment among the six major areas and 1 219 buildings in Hengkou Old Street.It precisely identifies that areas with strong disaster prevention in the building noumenon,in the affiliated structures,and the building environ-ment,are dispersed in patches along both sides of the streets and lanes.The weak disaster prevention points are mostly located within clusters with low accessibility.The results provide a technical basis for assessment and identi-fication,as well as prioritized approaches for improvement,in order to mitigate the risk of disaster hazards in dis-trict buildings,reduce the vulnerability of disaster-bearing buildings,enhance their adaptability,and improve their resilience.