Calculation Program Based On The Reliability To Existing Structures Realization And Its Application

The risk assessment, remaining life prediction of exsiting structure is an urgent problem to be resolved presently in engineering field. However, as the complexity of existing structure reliability analysis, the engineers only used the structural reliabil ity design so far. Analysis of the assessment and identification to the existing structur e reliablity is still in a qualitative stage. This paper proposes a practical method to solv e the foregoing problems, investigating the effect of major factor on the reliability o f existing structures based on the static single component reliability analysis method an d the concept of system reliability.The following contents are mainly studied in this thesis:1. Analyzed and summarized the relevant algorithm of classical reliability theory. Establish the resistance and load effect model of the existing structure. Assess for single component based on reliability. Assess for structure system by c aculating the failure modes correlation and the approximate calculation to se ries-parallel system. Obtain structure service status. Major factor that affects structure system were determined through sensitivity analysis.2. Take vc++6.0as platform, interact data with visual interactive interface.Trea t the statistical parameters from mearsureing the structure by computer simulati on techniques. Realized time-varying structural reliability calculation. Comple te sensitivity analysis, result processing and graphical analysis. A visual comp uter program based on reliability is realized.3. Finally, present cases to illustrate the validity and convenient of the progra m.