Method To Appraisal Reliability Of Monolayer Steel Structural Workshop Based On State Analyses

Regular maintenance and monitoring have important and special effect on safety control of scaled serviced industrial workshops and provide primal safe guarantee to served industrial workshops. But in the present standard system there is a lack of criterion that is simple and used easily and can supervises maintenance and monitoring. State appraisal method of structure reliability of monolayer steel structure industrial workshops is developed and render academic gist for the establishment of maintenance and monitoring criterion.Based on the illustration of the using state of industrial buildings and the present appraisal method of structural reliability, the paper indicates the relationship between structural state and reliability, by analyzing the feature rule and reason of scathe and demolish of steel workshop, and puts forward the basic view of appraisal method of structural reliability. Structural state is the external performance of structure; The decline of structural performance and decrease of the reliability level are shown as the alter of structure state. Therefore, the analysis and appraisal of structure state can evaluate the structural reliability indirectly.The paper develops the basic system of state-appraisal method aiming at monolayer steel structure workshop; According to the influence factor of structural reliability, the paper also establishes the appraisal index and gradation principle to the effect foundation column-system roof covering-system and crane girder-system; the appraisal method of main index of unit section's shortening surface temperature and deformation is especially researched; The integrated appraisal method of structural reliability of industrial building is set up on the basis.A special research on the pylon factory of Bao-steel Stock Ltd .is carried out to illuminate methodological engineering application. On the basis of locale survey, the paper analyzes the deformation law of the foundation firstly, and establishes a controlling standard of the foundation settlement according to the method of state appraisal; In view of the special environment of the workshop, a control index of the surface temperature of element is set up; A integrated appraisal on the workshop is provided at last.The research content and payoffs of the paper supplies a new method to the appraisal of steel structure industrial workshops. Compared with the current appraisal method, the method is verysuitable for the regular maintenance and monitoring of the industrial workshop, and makes up the scarce of the current system, and has a special function for the safety control of the industrial building. Basic idea and method also has some reference values for the safe control of other types of mill structure.