Investigation And Analysis Of Rural Houses In Jiangxi Earthquake Monitoring Area

The historical earthquake damage indicated that the main cause of economic losses and casualties is still housing damage caused by earthquake.Rural buildings are usually damaged seriously in earthquake due to poor design,construction,material and other factors."Small earthquake catastrophe" has become a prominent feature of earthquake disaster in Chinese towns.Meanwhile,most Chinese towns are located in earthquake regions or high intensity regions,some even in seismic significant monitoring and protection regions in Jiangxi.People’s life and property safety and social economic development are facing the potential threat of earthquake damage.Therefore,to investigate and analyze the seismic capacity of rural buildings has very important practical significance.In order to research the seismic capacity of rural buildings in Jiangxi,the historical earthquake background in Jiangxi and seismic characteristics of rural buildings are summarized and rural buildings in seismic significant monitoring and protection regions are investigated.Based on the survey data,the structural characteristics,construction characteristics and construction measures are summarized and analyzed.Through expert evaluation,earthquake prediction,numerical simulation and other methods,the current seismic capacity of rural buildings is analyzed and the corresponding suggestions are put forward,which provide the basis for earthquake prevention and disaster reduction work of Jiangxi.The main research work of this paper is as follows:(1)The historical earthquake background in Jiangxi and rural buildings earthquake disaster were summarized and the earthquake characteristics,typical earthquake damage and earthquake damage reason were analyzed.(2)The seismic capacity of rural buildings of 8 counties or cities in seismic significant monitoring and protection regions were investigated.The basic data of housing construction age,structural type,construction quality,facade layout and structural characteristics were collected,structural characteristics,construction characteristics,construction measures and existing problems were summarized and corresponding suggestions were proposed.(3)The typical earthquake damage prediction methods of masonry structure monomer were summarized and the advantages and disadvantages of different forecasting methods and application scope were discussed.Combined with 7 cases in Wenchuan earthquake,seismic damage prediction results of different methods were compared and the reliability of prediction methods was verified,which laid the foundation for the seismic capacity analysis of Jiangxi rural buildings.(4)According to the survey data,this paper predicted the earthquake damage situation of 363 typical rural buildings in Jiangxi and the seismic capacity of rural buildings in different regions and structural types was analyzed.Then,combined with the historical earthquake,the current seismic capacity situation of Jiangxi rural buildings was analyzed.(5)On the basis of the study mentioned above,finite element analysis can be used on the typical rural buildings in Jiangxi by ABAQUS software.Compared with the actual earthquake damage and earthquake damage prediction results,further analysis of the seismic capacity under different earthquake action was obtained,which provided a reference for rural buildings seismic fortification.