| Title |
A Study on Structural Reliability Analysis of Semi-rigid Connections |
| Keywords |
Reliability Analysis ; Limit State Equation ; Monte-Carlo Method ; Advanced First-Order Second Moment Method |
| Abstract |
The reliability of steel frames with semi-rigid connections is dependent on the variability in the moment-rotation characteristics of the connections. In this study, the moment-rotation relation is adopted by power model cosidering three parameters. For analyzing structural reliability of semi-rigid connections, probability distribution functions of three parameters treated as random variables are assumed to be normal and log-normal distribution. Probabilities of failure and reliability indices are calculated by structural reliability analysis.
Limit state equation on the moment-rotation relation of semi-rigid connections of steel beam in non-sway steel frame is presented. The design points of random variables are determined by calculating the minimum distance from the origin to the failure surface in a set of normalized variables. In order to provide target value of reliability index by changing coefficient of variance of random variable, advanced first-order second moment method is applied. The results by this method are compared with those by Monte-Carlo method. |