Design of prestressed concrete structures
Presents basic theory of prestressed concrete along with the load balancing, working-load and ultimate-load methods for prestressed concrete design. Material revised in light of substantial advances in the field includes: materials, prestressing systems, loss of prestress, shear and bond, camber and deflection. Design examples based on the 1977 ACI Code with its latest revisions. Appendix contains selected problems.
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PRESTRESSING SYSTEMS END ANCHORAGES
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ACI Code analysis anchorage applied assumed bars bending bonded bottom fiber bridges C-line c.g.s. line cable-stayed bridges camber cantilever column composite section compressive stress computed concordant cable concrete section continuous beam cracking creep curve dead load deflection diagram diameter due to prestress eccentricity effective prestress elastic theory equation example external loads factor factor of safety fiber stress flange flexural ft-k girder grouting Hence initial prestress k-ft k/ft kern kN-m kN/m layout length lever arm live load load balancing loss of prestress maximum method midspan modulus moments posttensioned precast prestress force prestressed concrete Prestressed Concrete Beams prestressed-concrete prestressing steel pretensioned principal tensile reinforced concrete resisting result service load shear strength shear stress shown in Fig shrinkage slab span steel stress strain strands structure T. Y. Lin tendons tensile stress tension top fiber transfer ultimate load ultimate strength wires