Risk Consistent Estimate of Heat‐Straightening Applications. II: Beams
Publication: Journal of Structural Engineering
Volume 118, Issue 12
Abstract
Economical heat‐straightening operations on damaged elements in heavy steel construction require the accurate estimation of the number of heat applications necessary to effect a given repair. An experimental program to provide empirical support to theoretical predictors was devised and executed with the objective of estimating the number of partial‐depth vee heat applications required to repair a specified damage angle in wide‐flange beams. Extending ideas previously implemented for plate elements, simple engineering models based on the theory of reliability were derived using the uniform value of a preselected target reliability index, and theoretically verified with a separate application of spectral analysis in the frequency domain. Parametric studies were conducted to examine the variation of the estimate with the principal statistics of the plastic rotations in the straightening process. Very good agreement was obtained among the estimates using the different formulations.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Avent, R. R. (1987). “Use of heat straightening techniques for repair of damaged steel structural elements in bridges.” Final Report, Louisiana Transp. Res. Ctr., Louisiana State Univ., Baton Rouge, La.
2.
Avent, R. R. (1989). “Heat‐straightening of steel: Fact and fable.” J. Struct. Engrg., ASCE, 115(11), 2773–2793.
3.
Brockenbrough, R. L. (1970). “Theoretical stresses and strains from heat curving.” J. Struct. Div., ASCE, 96(7), 1421–1444.
4.
Brockenbrough, R. L., and Ives, K. D. (1970a). “Experimental stresses and strains from heat curving.” J. Struct. Div., ASCE, 96(7), 1305–1331.
5.
Brockenbrough, R. L., and Johnston, B. G. (1970b). “Criteria for heat curving steel beams and girders.” J. Struct. Div., ASCE, 96(10), 2209–2226.
6.
Clough, R. W., and Penzien, J. (1975c). Dynamics of structures, part IV: Random vibrations. McGraw‐Hill, New York, N.Y.
7.
Crandall, S. H., and Mark, W. D. (1963). Random vibrations in mechanical systems. Academic Press, New York, N.Y.
8.
de Béjar, L. A., Robinson, P. F., and Avent, R. R. (1992). “Risk consistent estimate of heat‐straightening applications. I: Plates.” J. Struct. Engrg., ASCE, 118(12), 3394–3409.
9.
Hasofer, A. M., and Lind, N. C. (1974). “Exact and invariant second‐moment code format.” J. Eng. Mech. Div., ASCE, 100(1), 111–121.
10.
Horton, D. L. (1973). “Heat curved mild steel wide flange sections: An experimental and theoretical analysis,” M.S. thesis, Univ. of Washington, Seattle, Wash.
11.
Melchers, R. E. (1987). Structural reliability: Analysis and prediction. John Wiley and Sons, New York, N.Y.
12.
Moberg, K. L. (1979). “Damage assessment and contraction straightening of steel structures,” MSci thesis, Univ. of Washington, Seattle, Wash.
13.
Newland, D. E. (1984). An introduction to random vibrations and spectral analysis. Longman House, Inc., New York, N.Y.
14.
Robinson, P. F. (1991). “Behavioral characteristics of damaged steel repaired by heat straightening,” PhD thesis, Louisiana State Univ., Baton Rouge, La.
15.
Roeder, C. W. (1985). “Use of thermal stress for seismic damage repair.” Final Report on NSF Grant CEE‐82‐05260. Univ. of Washington, Seattle, Wash.
16.
Roeder, C. W. (1986). “Experimental study of heat induced deformation.” J. Struct. Engrg., ASCE, 112(10), 2247–2262.
17.
Shanafelt, G. O., and Horn, W. G. (1984). “Guidelines for evaluation and repair of damaged steel bridge members.” NCHRP Report No. 271, Transp. Res. Board, Natl. Res. Council, Washington, D.C.
18.
Yang, C. Y. (1986). Random vibration of structures. Wiley‐Interscience, New York, N.Y.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 118 • Issue 12 • December 1992
Pages: 3410 - 3426
Copyright
Copyright © 1992 ASCE.
History
Published online: Dec 1, 1992
Published in print: Dec 1992
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.