Behaviour of Steel Concrete Composite Wall Panel Under Blast Load

Abstract

Composite wall panel (CWP) design involves a multidisciplinary approach involving material science, structural engineering and dynamic analysis, using advanced modelling techniques and empirical methods. This paper presents an experimental investigation and numerical analysis carried out to understand the component behaviour of Steel-Concrete composite wall panel using Basalt fibers under explosion test. The examination of plain cement concrete (PCC) and basalt fiber reinforced concrete (BFRC) walls with and without profiled steel sheets are casted as the experimental specimens. In this experiment, an explosive with a heat of detonation 1.59 (MJ/kg) is used at a standoff distance range of 1.0 meter and a varied charge weight is used. The Wall Panels experienced the different explosive load conditions, it is observed that minor cracking to moderate deformation is developed and under different charge weight displayed more noticeable deflection and localized damage, despite maintaining structural integrity without catastrophic failure. The experiments results are analyzed numerically; the simulated shock wave overpressure waveforms were compared with that tested. The result shows that the numerically simulated waveform is slightly different from the test waveform, it means that explosive test results achieved more strength than the analytical results. The Profiled sheet composite wall panel with PCC, it functions better and exhibit less spalling and cracking than PCC walls. Although the steel has good ductility properties and strength, it can sustain more significant damage from large explosions. BFRC walls perform better than PCC walls because of the basalt fibres increased tensile strength and ductility properties.