Reliability Research On The Stability Of Existing Reticulated Shell Structures

Reticulated shell structures are normally controlled by their stability in design. Due to the corrosion of steel, the resistance of stability and stability reliability of existing reticulated shell structures would decay. Therefore, the research of dynamic stability reliability of existing reticulated shell structures has important theoretical value and economic value.Based on the basic theory of structural reliability, high-moment method for structural reliability is presented in this thesis, which can resolve the problem of reticulated shell structure lack of statistical features characteristic. Considering the resistance degradation model and the load model, the model of reticulated shell structures dynamic reliability calculation is established. Application of the high-moment method for structural reliability, this thesis calculates the dynamic stability reliability of existing reticulated shell structures, comparative analysis and fitting the value of dynamic reliability. The results show that the dynamic reliability still adherence to specification in the design reference period. The reticulated shell steel thickness correction factor value in the static reliability analysis is given in this thesis.