Title: Seismic performance assessment of low-rise reinforced concrete moment frames with different slab types using nonlinear time history analysis (performance of LR RC frames with different slabs by NLTHA)

Authors: Mahmoud Eissa; Murude Celikag

Addresses: Department of Civil Engineering, Engineering Faculty, Eastern Mediterranean University, 99628, Famagusta, North Cyprus, via Mersin 10, Turkey ' Department of Civil Engineering, Engineering Faculty, Eastern Mediterranean University, 99628, Famagusta, North Cyprus, via Mersin 10, Turkey

Abstract: This study explores the global influence of different slab types on the seismic behaviour of reinforced concrete (RC) frames, focusing on an innovative RC frame supporting a composite slab of galvanised steel deck and concrete. The aim is to provide key insights for improved seismic analysis and design in structural engineering. A rigorous nonlinear time history analysis was employed, considering bar slip, shear, and flexural deformation. These were modelled using a distributed plasticity framework with fibre-section techniques in OpenSees, using 51 ground motion records. Base shear from 2D frames with composite slabs was 30% less than other cases. Per Hazus-MH MR5, composite and solid one-way slab frames showed up to 27% lower inter-story drift, performing best among all cases. Achieving a 40% reduction in building weight, material use, and improved seismic performance under NTHA makes the composite slab a strong competitor to conventional slabs in RC construction.

Keywords: composite slab with RC frame; seismic performance NTHA; RC frame-slab type; nonlinear moment frame performance.

DOI: 10.1504/IJSTRUCTE.2025.150128

International Journal of Structural Engineering, 2025 Vol.15 No.4, pp.458 - 503

Received: 04 Nov 2024
Accepted: 11 Jul 2025
Published online: 01 Dec 2025 *

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