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Advances in Materials Science and Engineering
Volume 2017, Article ID 3037946, 7 pages
https://doi.org/10.1155/2017/3037946
Research Article

Analytical Model for Deflections of Bonded Posttensioned Concrete Slabs

1Department of Architectural Engineering, Kyung Hee University, 1732 Deogyeong-daero, Yongin, Republic of Korea
2School of Architecture, Yeungnam University, 280 Daehak-ro, Gyeongsan, Republic of Korea

Correspondence should be addressed to Young Hak Lee; rk.ca.uhk@hyeel

Received 13 December 2016; Accepted 7 February 2017; Published 5 March 2017

Academic Editor: Francesco Caputo

Copyright © 2017 Min Sook Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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.