Abstract
In this paper, the Koiter law has been extended to be consistent with the evaluation of the probabilistic variation of buckling strength. The extension is the consideration of the second order (minor) imperfections, in addition to the first order (major) imperfections considered in the Koiter law. Explicit formulas are presented to be readily applicable to the numerical evaluation of imperfection sensitivity. As a revision of the results in [1], a procedure to describe the probabilistic variation of critical loads is presented for the case where initial imperfections of structures are subject to a multivariate normal distribution; the formula for the probability density function of critical loads is derived by considering up to the second order imperfections. As a new application, the probabilistic variation of live loads of bridges is considered.
| Original language | English |
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| Title of host publication | Proceedings of the 9th International Conference on Computational Structures Technology, CST 2008 |
| Publisher | Civil-Comp Press |
| Volume | 88 |
| ISBN (Print) | 9781905088232 |
| Publication status | Published - 2008 Jan 1 |
| Event | 9th International Conference on Computational Structures Technology, CST 2008 - Athens, Greece Duration: 2008 Sep 2 → 2008 Sep 5 |
Other
| Other | 9th International Conference on Computational Structures Technology, CST 2008 |
|---|---|
| Country | Greece |
| City | Athens |
| Period | 08/9/2 → 08/9/5 |
Keywords
- Bridge
- Buckling load
- Imperfection sensitivity law
- Live loads
- Probabilistic variation
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Civil and Structural Engineering
- Artificial Intelligence
- Environmental Engineering