F. K. Kong MA, MSc, PhD, CEng, FICE, FIStructE, R. H. Evans CBE, DSc, D ès Sc, DTech, PhD, CEng, FICE, FIMechE, FIStructE (auth.)-Reinforced and Prestressed Concrete-Springer US (1987)

378 Prestressed concrete simple beams
Ujsn _ esi
E- fcs - E A .2: ofsiApsi 1 + kzesn
S..£ 1 i=n ( )
S C I=l
Hint: If n = 1, the above n equations reduce to that of Example 9.4-3,
namely
ofs = _ _L . ofsAps(1 + e;)
Es fcs Ec A k2
References
1 Lin, T. Y. and Chow, P. Looking into the future. In Handbook of Structural
Concrete, edited by Kong, F. K., Evans, R. H., Cohen, E. and Roll, F.
Pitman, London and McGraw-Hill, New York, 1983, Chapter 1. Warner,
R. F. Prestressed concrete and partially prestressed concrete. In ibid., Chapter
19.
2 Kong, F. K. Bending, shear and torison, In Developments in Prestressed
Concrete, edited by Sawko, F. Applied Science, London, 1978, Vol. 1,
Chapter 1. Evans, R. H. and Kong, F. K. Creep of prestressed concrete. In
ibid., Chapter 3.
3 T. Y. Lin Symposium on Prestressed Concrete: Past, Present, Future.
University of California, 5 June 1976. Journal of Prestressed Concrete Institute,
Special Commemorative Issue, Sept. 1976.
4 Evans, R. H. Institution of Civil Engineers' Unwin Memorial Lecture:
Research and developments in prestressing. Journal ICE, 35, Feb. 1951,
pp. 231-61.
5 Evans, R. H. and Robinson, G. W. Bond stresses in prestressed concrete from
X-ray photographs. Proc. ICE, Part I, 4, March 1955, pp. 212-35.
6 Evans, R. H. and Williams, A. The use of X-rays in measuring bond stresses
in prestressed concrete. Proceedings, World Conference on Prestressed
Concrete, University of California, 1957, pp. A32-1 to A32-8.
7 Mayfield, B., Davies, G. and Kong, F. K. Some tests of the transmission
length and ultimate strength of pre-tensioned concrete beams incorporating
Dyform strand. Magazine of Concrete Research, 22, No. 73, Dec. 1970,
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8 Reynolds, G. C., Clarke, J. L. and Taylor, H. P. J. Shear Provisions for
Prestressed Concrete in the Unified Code, CP I 10: 1972 (Technical Report
42.500). Cement and Concrete Association, Slough, 1974.
9 Smith, I. A. Shear in prestressed concrete to CP 110. Concrete, 8, No.7, July
1974, pp. 39-41.
10 Abeles, P. W. and Bardhan-Roy, B. K. Prestressed Concrete Designer's
Handbook. Cement and Concrete Association, Viewpoint Publication,
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11 Evans, R. H. and Hosny, A. H. H. Shear strength of post-tensioned
prestressed concrete beams. Proceedings, FIP 3rd Congress, Berlin, 1958,
pp. 112-32.
12 Evans, R. H. and Schumacher, E. G. Shear strength of prestressed beams
without web reinforcement. Proc. ACJ, 60, Nov. 1963, pp. 1621-42.
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