Analytical Model for Deflections of Bonded Posttensioned Concrete Slabs

Abstract EN

This paper presents a finite element analysis approach to evaluate the flexural behavior of posttensioned two-way slabs depending on the tendon layout.

A finite element model was established based on layered and degenerated shell elements.

Nonlinearities of the materials are considered using the stress-strain relationships for concrete, reinforcing steel, and prestressing tendons.

Flexural testing of the posttensioned two-way slabs was conducted to validate the developed analytical process.

Comparing the analytical results with the experimental results in terms of deflections, it showed generally good agreements.

Also a parametric study was performed to investigate the effects of different types of tendon layout.