Reliability Appraisal And Strengthening Method Of Steel Structure And Its Performance Analysis After Fire

The structural assessment and retrofitting in civil engineering is one of the most popular career at present. The most development of modern technology and the drive of retrofitting in engineering make the reliability assessment and retrofitting of building structures become a new subject and develop rapidly. Referring to the research of predecessors and combining with the engineering practice,this paper makes a detailed analysis of the reliability assessment retrofitting of steel structure. Besides,it also states the theory"the assessment and retrofitting of fired steel structure",which is less researched in the field of engineering.The main contents of the paper are as follows:The paper makes an overview of the development course of the retrofitting of building structures at home and abroad,it analysis the development perspective of the career and introduce the significance and necessity of the research of the reliability of building structures.The paper introduce the basic theoretical knowledge of the reliability of structure as well as the calculating method of the reliability,analysis the reliability difference between the proposed building and the existing building. The focuses on the existing detection standards in our country and its scope of application. It also briefly introduces the appraisal principle of the assessment and the level of the reliability assessment.This paper states the procedures、contents、methods and steps of the reliability assessment of steel structure in details,especially the inspection of the steel structure components and connections and joints. It briefly states the purpose of the retrofitting and the matters needing attention. It focuses on the usual methods in retrofitting and its scope of applicationCombined with the previously stated theory,assess and analysis the real project that adopting the retrofitting theory, and put forward the corresponding retrofitting measures, dealing with the similar projects in the futures.It briefly states the necessity of the assessment of fired steel structure; talks the effect of high temperature on steel structure in details as well as the method of measuring the temperature of steel in the fire; it focuses on the method and content of the assessment of the fired steel; briefly introduces the retrofitting method of fired steel structure, which lays a foundation for the further research.This paper takes the steel structure as the research subject,analysis the reliability and retrofitting of fired steel structure. This research has a very broad market prospects and it is significance to the real project. The assessment and retrofitting of the structure is a strongly comprehensive research filed. Its content involves many subjects, the research requires an enormous of energy,especially the analysis of the capability of the steel structure. With the further expansion of the market demand. The research content in this paper will be studied in a more extensive high depth way.