Research On Degradation Detection And Evaluation Of Historical Buildings In Chongqing Mountain Hot And Humid Environment Brick Masonry

The procedures for the protection and management of cultural relics and historic sites are divided into six steps,which are followed by investigation,research evaluation,determination of protection level,establishment of target planning,implementation of protection planning and summary,adjustment planning and project implementation plan.The investigation and research evaluation is the basis and basis of the whole protection work,and the protection plan should be based on the investigation and evaluation methods of the scientific system.On the one hand,in recent years,with the development of the World Heritage Protection Discipline and China's protection of architectural heritage,the protection and restoration of a large number of historical buildings has been included in the implementation plan,but the research on architectural pathology by relevant industries is not deep enough.Sometimes improper repairs are taken,so that the repair fails to achieve the desired results,and may also accelerate the destruction of the restored building.Scientific protection requires that the restoration design work of historical buildings should be based on the scientific and systematic evaluation of its damage,and work with complete and reasonable repair techniques,with minimal intervention and scientific and reasonable Manipulative protection of the value of historical buildings without undue repair;on the other hand,China has a vast territory,each region has its own unique geographical climate,Chongqing has hilly hills,high temperature and high humidity in summer,The characteristics of cold and damp in winter,and the growth of insect microbial species,the above factors constitute the uniqueness of the mechanism and manifestation of building degradation in Chongqing.Therefore,this paper uses the research object of brickwork in Chongqing to pass through the local historical buildings.Conducting field investigation on the deterioration of brick masonry,analyzing its production mechanism,integrating statistics on the types of deterioration phenomena,and summarizing the occurrence intensity of each degradation,and classifying and scoring the damage degree;using the comparison method to determine the various types of degradation The weight of masonry damage is used to evaluate the damage of masonry under the influence of various degradation phenomena.Degree.The evaluation system is a set of evaluation system that comprehensively analyzes the deterioration of masonry.The evaluation method can be used as a quick evaluation of the damage of the masonry and provides a reference for the protection and restoration plan.Firstly,the background of “Chongqing Mountain Hot and Humid Climate Environment”,“Building Pathology”,“Building Deterioration”,“Quantitative Analysis of Deterioration” and other related concepts,and related research results in this field at home and abroad are elaborated,and the research content and research methods of this paper are clarified.And research framework.Then introduce the historical and structural characteristics of brick masonry in Chongqing,and analyze the geographical and environmental conditions to illustrate the pathogenic factors often encountered in buildings in the region.Through the investigation and summary of the common types of deterioration of brick masonry materials,and provide a corresponding chart,qualitatively determine the type of building degradation,and can determine the degree of deterioration by observing the performance of the deterioration phenomenon.First,qualitatively determine the type of building degradation phenomenon,followed by determining the degree of deterioration of a certain degradation phenomenon,and it is necessary to use modern science and technology to detect damaged buildings.Describe the role and significance of building deterioration detection in disease investigation,and classify the inspection method according to the degree of damage to the building or the location of the inspection,and evaluate the advantages and disadvantages of various detection methods,so that we can further develop the specific detection methods.Evaluate the suitability of the detection means.Finally,quantitative analysis is carried out on the degradation situation.One is the grading evaluation that can observe the apparent phenomenon.On the other hand,the modern detection method can obtain the accurate degradation value of an indicator,which corresponds to a certain degree of deterioration phenomenon.The relationship between the deterioration phenomenon and the deterioration degree value can be accurately quantified numerically.The type of deterioration is judged and the relevant test values are obtained,and the data needs to be integrated to evaluate the damage degree of the building.Comprehensive evaluation of the damage degree of brick masonry historical buildings in Chongqing is to calculate the effect of superimposed deterioration of masonry,compare the degree of risk of deterioration,and give a deterioration to brickwork by analytic hierarchy process.The weight value of the body influence,so that the different types of deterioration of the same track and one dimension can calculate the damage degree to the masonry according to the grade caused by the deterioration development and the affected area.Use this method to determine the health status of the masonry and decide whether further inspection or intervention is needed.Finally,the actual case of the team was selected to protect the repair project of the “National Central University Anti-Japanese War Hall” of Chongqing University,indicating that the project started from the previous historical background and environment,building ontology investigation,involving the investigation of building degradation,pathological analysis,pathological identification and identification of deterioration degree.After obtaining such information,a comprehensive assessment of the building is carried out to determine which interventions are necessary,and then the restoration design under the protection rules with the “authenticity” principle as the core is formulated.