Construction and Confirmation of a Model for Time Dependent Resistance of the Steel Structure Project

We developed a model of time dependent resistance for a steel structure project and discuss herein the expression and the primary value of many parameters in the model. On the basis of the APDL language furnished by universal finite element program, we united the functions of structural and statistic analyses. A time dependent reliability analysis was implemented. The result of the time dependent reliability analysis was compared with that of the no time dependent reliability analysis. Through testing a calculated example, we saw that when the time dependent resistance was considered, the factor of time greatly influences structural reliability. In addition, we found that the model of time dependent resistance for a steel structure is reasonable and feasible.     

Probability Analysis of "Strong Beam and Weak Beam" and Axial Compression Ratio in RC Frame

In the view of reliability calibration, this paper analyzes the probabilistic sense of the provisions of "Strong Column and Weak Beam' and axial compression ratio in aseismic criteria (GBJ 11 89), which demonstrates that there is much difference between different aseismic ranks of RC frame. The authors suggest that it is possible to make axial compression ratio larger by adjusting the moment capacity ratio between column and beam. Finally, the direction and method of further studies are proposed.