Analysis Of Rural Residential Regional Characteristics And Seismic Vulnerability Of Typical Structures

The seismic capacity of rural residences is weaker compared with urban residences,and rural residences have been seriously damaged in historical earthquakes.China has a vast territory,diverse climatic conditions and many ethnic groups.Influenced by many conditions such as construction habits,geographical environment and economic factors,there are often some differences in the structural characteristics and architectural styles of rural residences in different regions,which leads to the differences in the seismic capacity of residences in different regions.Therefore,it is of great significance to understand the characteristics of rural residences in different regions and study the seismic vulnerability of various rural residential structures for promoting the disaster prevention and mitigation of rural residences in China.Based on the field survey data and the research results of rural residences,this paper classifies the types of rural residences,introduces the structural characteristics and structural differences of various rural residential structures in different regions,and analyzes each types of rural residential structure distribution in different regions.By studying the actual earthquake damage in historical earthquakes,the characteristics and causes of earthquake damage of various rural residential structures are summarized and analyzed,the relative seismic capacity of various rural residential structures is compared,and the seismic vulnerability curves of various rural residential structures under different damage levels are compared and analyzed.Finally,using the fuzzy analytical hierarchy approach,a method for the seismic vulnerability analysis of rural residential structures is proposed,and the seismic vulnerability analysis of earth-wood structure in Xigaze,Tibet is carried out.The main work of this paper is as follows:1.Based on the research results and field survey data of rural residential structure types,the rural residence is divided into seven main structural types,and the definition standard and division range of each structural type are given.In order to facilitate the research of the rural residential structure in different regions,this paper divides China into six geographical regions of rural residence by comprehensively considering the results of geographical region division and the actual situation of rural residence in each region.2.By sorting out and analyzing a large number of field survey data and research results of rural residence,the structural characteristics and architectural styles of various types of rural residential structures in different regions are summarized,and compared the structural differences of the same type of rural residential structure in different regions.The structural forms and architectural features of characteristic rural residential in various regions and ethnic minorities are analyzed.3.Based on the field survey data of rural residence and the data of rural residence in the sixth census,the overall distribution proportion of rural residential structure types in each region was determined,the corresponding relationship between the rural residential ratio and the quantity grade was proposed,the distribution maps of the quantity grade of various rural residential structures in different provinces were drawn,and the distribution of various rural residential structures in different regions was compared and analyzed.Based on the actual situation and development characteristics of rural residential structure types in various regions,four main development processes of rural residential structure types are summarized.4.Based on the actual earthquake damage of rural residences in historical earthquakes,the damage characteristics and causes of various rural residences are summarized and analyzed,and measures and suggestions for improving the seismic capacity of various rural residential structures are proposed.Based on the research results of the earthquake vulnerability matrix of rural residences,the average seismic damage index of various rural residential structures is calculated,the relative seismic capacity of various rural residential structures are compared,and the seismic vulnerability curves under different damage levels were given.The curve analyzes the overall destruction of various rural residential structures under different earthquake intensities.5.Based on the studing the relationship between the overall damage of rural residential structures and seismic intensity,a method for calculating the seismic vulnerability of rural residential structures is proposed by using the fuzzy analytical hierarchy approach to consider the difference of the influence of main factors on the relative seismic capacity of rural residential structures under different seismic intensity.Based on the seismic vulnerability matrix of a certain type of rural residential structure in the benchmark regions,the seismic vulnerability matrix of the same type of rural residential structure in the target regions is obtained by analogy calculation,considering the structural differences of the main factors affecting the seismic capacity of the same type of rural residential structure in different areas.Based on the seismic vulnerability calculation method proposed in this paper,the seismic vulnerability analysis of earthwood structure in Xigaze,Xizang is carried out,and its seismic vulnerability curve is obtained.