ABSTRACT

In the preceding chapter, we presented a method of analysis of the timedependent stresses and strains in composite sections composed of more than one type of concrete or of concrete and structural steel sections with or without prestressed or non-prestressed reinforcement. In the special case when the section is composed of one type of concrete and the prestressed and non-prestressed steel are situated (or approximately considered to be) in one layer, the analysis leads to simplified equations which are presented in this chapter. Another special case which is also examined in this chapter, is a cross-section which has reinforcement without prestressing and we will consider the effects of creep and shrinkage. However, discussion of the effects of cracking is excluded from the present chapter and deferred to Chapters 7 and 8.