Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Analytical Evaluation of Seismic Performance of Post-tensioned slab with RC Wide Beam

Document Type : Original Article

Authors
Amin Behrouz 1
Jalil Shafaei 2
1 Engineer, Faculty of Civil Engineering, Shahrood University of Technology, Shahrood, Iran
2 Associate Professor, Faculty of Civil Engineering, Shahrood University of Technology, Shahrood, Iran
10.22065/jsce.2025.509014.3680
Abstract
Due to the increase in the use of post-tension slabs in structures with long spans, studying and investigating the seismic behavior of these types of systems has become more important. In this article, post-tension slab systems are used along with wide beam moment frame systems. For this purpose, firstly, a sample of the exterior connection of the post-tension slab to the column and a sample of the exterior connection of the wide beam to the column were validated in ABAQUS software. Then, by adding a wide beam with different dimensions to the post-tension slab sample and also adding a post-tension slab to the validated wide beam sample, the performance of this combined system was investigated. The results showed that the presence of the wide beam buried in the slab increases the ultimate strength by 21.5% and the wide beam with a depth of 20 cm and a width of 60 and 75 cm respectively increases the ultimate strength by 171.5 and 207% compared to the original sample. Also, the effective stiffness of the samples with the wide beam increases significantly. The results showed that the presence of the wide beam buried in the slab increases the ultimate strength by 21.5% and the wide beam with a depth of 20 cm and a width of 60 and 75 cm respectively increases the ultimate strength by 171.5 and 207% compared to the original sample. Also, the effective stiffness of the samples with the wide beam increases significantly.
Keywords
Prestressed Slab
post-tensioned Slab
Lateral Loading
Reinforced Concrete Slab
Reinforced Concrete

Subjects

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  • Receive Date 09 August 2025
  • Revise Date 16 September 2025
  • Accept Date 10 October 2025