Effect of Creep and Shrinkage on RC Frames with High Beam Stiffness
Publication: Journal of Structural Engineering
Volume 129, Issue 4
Abstract
The most widely used procedure available in literature for determining creep and shrinkage effects in RC building frames, designated herein as approximate procedure (AP), has been recommended for buildings having flexible slab systems (low beam stiffness) and with a number of stories not exceeding 30. Recently an accurate procedure termed as consistent procedure (CP) has been developed which is applicable for low as well as for high beam stiffness and requires no restriction on the number of stories. In this paper, using CP, behavioral studies are reported for frames with high beam stiffness. For a 60 story frame, studies are reported for steel ratio, volume to surface ratio, and number of stories. It is shown that the effect of inelastic deflections on final elastic forces is complex and strongly depends upon percentage of reinforcement and volume to surface ratio. When the effect of these two parameters mutually reinforce each other, the load transfer among columns can be significant. On the other hand when these effects balance each other, the load transfer is low.
Get full access to this article
View all available purchase options and get full access to this article.
References
Banavalkar, P. V., and Wilkerson, S. (1993). “Creep and shrinkage of composite columns in tall buildings.” Proc., Symposium on Structural Engineering in Natural Hazards Mitigation, ASCE, New York, 1473–1478.
Fintel, M. (1974). Handbook of concrete engineering, 2nd Ed., Van Nostrand Reinhold, New York.
Fintel, M., Ghosh, S. K., and Iyengar, H. S. (1987). “Column shortening in tall buildings—Prediction and compensation.” Publ. EB108 D, Portland Cement Association, Skokie, Ill. 1–34.
Fintel, M., and Khan, F. R.(1969). “Effects of column creep and shrinkage in tall structures—Prediction of inelastic column shortening.” ACI J.,66, 957–967.
Fintel, M., and Khan, F. R. (1971). “Effects of column creep and shrinkage in tall structures—Analysis for differential shortening of columns and field observation of structures.” Paper SP 27-4, ACI Spec. Publ. 27, American Concrete Institute, Detroit, 95–119.
Ghosh, S. K. (1997). “Differential shortening in tall concrete buildings.” Proc., 15th Structural Congress, Part I, Vol. 1, ASCE, New York, 135–139.
Maru, S. (2000). “Analysis and behaviour of R.C. tall buildings incorporating creep and shrinkage.” PhD thesis, IIT, Delhi, India.
Maru, S., Asfaw, M., and Nagpal, A. K.(2001). “A consistent procedure for creep and shrinkage effects in R.C. frames.” J. Struct. Eng., 127(27), 726–732.
Smith, B. S., and Coull, A. (1991). Tall building structures: Analysis and design, Wiley, New York.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 4 • April 2003
Pages: 536 - 543
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jul 24, 2001
Accepted: Jul 3, 2002
Published online: Mar 14, 2003
Published in print: Apr 2003
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.