Theoretical Investigation of Steel Plated Girder Resistance

Authors: J. Kala, J. Melcher, M. Škaloud, Z. Kala

Abstract:

In the paper, the results of sensitivity analysis of the influence of initial imperfections on the web stress state of a thinwalled girder are presented. The results of the study corroborate a very good and effective agreement of experiments with theory. Most input random quantities were found experimentally. The change of sensitivity coefficients in dependence on working load value is analysed. The stress was analysed by means of a geometrically and materially non-linear solution by applying the program ANSYS. This research study offers important background for theoretical studies of stability problems, post-critical effects and limit states of thin-walled steel structures.

Keywords: Buckling, Fatigue, Imperfection, Steel, Sensitivity analysis.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1327602

References:

[1] Kala, Z., Kala, J., ┼ákaloud, M. and Tepl├¢, B. The Stress State in the Crack-Prone Areas of ÔÇ×Breathing" Thin Walled Girders, In Proc. of the Fourth International Conference on Coupled Instabilities, Rome (Italy), 235-246, 2004.
[2] Kala, J., Kala, Z., Škaloud, M. and TeplÛ, B. Parametric Sensitivity Analysis of the Stress State in the Crack-Prone Areas of Breathing Webs, In Proc. of the 20th Czech and Slovak National Conference "Steel Structures and Bridges 2003", Prague, 641-646, 2003.
[3] Melcher, J., Kala, Z., HolickÛ, M., Fajkus, M. and Rozlívka, L. Design Characteristics of Structural Steels Based on Statistical Analysis of Metallurgical Products, Journal of Steel Research 60, 795-808, 2004.
[4] Fukumoto, Y., Kajita, N. and Aoki, T. Evaluation of Column Curves Based on Probabilistic Concept, In Proc. of Int. Conf. on Stability, Prelim. Rep., publ. by Gaku-jutsu Bunken Fukyu - Kai, Tokyo, 1-37, 1976.
[5] Guedes Soares, C. Uncertainty Modelling in Plate Buckling, Journal of Structural Safety (5), 17-34, 1988.
[6] Novák, D., TeplÛ, B. and Shiraishi, N. Sensitivity Analysis of Structures, In Proc. of the Fifth Int. Conference on Civil and Structural Engineering Computing, Edinburgh, Scotland, 201-207, 1993.
[7] Kala, Z. Sensitivity Analysis of the Stability Problems of Thin-walled Structures, Journal of Constructional Steel Re-search 61, 415-422, 2005.
[8] Ravinger, J., PsotnÛ, M. Stable and Unstable Paths in the Post-Buckling Behaviour of Slender Web, In Proc. of the Fourth Int. Conf. on Coupled Instabilities in Metal Structures, Rome (Italy), pp.67-75, 2004.
[9] Vičan, J., Koteš, P. Bridge Management System of Slovak Railways, In Proc. of the IIIrd Int. Scientific Conf. Quality and Reliability of Building Industry, Levoča, 2003, 539-542, 2003.