LIMIT-STATES DESIGN OF PRESTRESSED CONCRETE PIPE I: PROCEDURE

This is the second of a 2-part paper which presents a new design procedure for prestressesd concrete pipe. The procedure is based on limiting the combined effects on the pipe wall of axial thrust and bending moment resulting from internal pressure, external loads, and pipe and water weights, so that certain limit-states design criteria are not exceeded when the pipe is subjected to working loads and pressures and to working plus transient loads and pressures. This paper presents a design procedure developed to calculate the combined loads and pressures corresponding to these limit-states criteria. It accounts not only for moment capacities of the pipe wall cross sections for a given thrust resulting from internal pressure, external loads, and pipe and fluid weights, but also for the redistribution of the bending moments as the pipe stiffness reduces at the invert and crown due to cracking of the core, and in the case of the embedded-cylinder pipe also by the yielding of the steel cylinder. The envelope of the admissbile combined design loads and pressures are defined for both working and working plus transient conditions.

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  • Accession Number: 00497479
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1990 12:00AM