Performance of Fiber Reinforced High-strength Concrete with Steel Sandwich Composite System as Blast Mitigation Panel

Abstract

The study investigated the response of steel-concrete composite panels subjected to air-blast loading. The composite panels consist of fiber-reinforced high-strength concrete on the incident face, together with a specially configured steel sandwich as the distal layer, which functions to dissipate the imparted blast energy. The performance of the novel composite panel is compared to a conventional steel concrete steel (SCS) panel and an ordinary reinforced concrete panel. The dynamic response of the composite panel is obtained numerically using finite element analysis adopting a simplified modeling approach. Parametric studies are carried out by varying the charge weight, the concrete type, and a number of steel sandwich core structures. Furthermore, the energy absorption capacity is found by calculating the area under the resistance-deflection curve of the proposed composite panel. The relationship between the steel sandwich core structure and the energy absorption capacity, as well as the core design and total panel deflection subjected to various blast charges, are then derived. The combination of fiber reinforced high-strength concrete and cellular steel sandwich demonstrated good potential for use as blast mitigation panel due to the high weight-to-performance ratio and the high energy absorption properties of the composite system.

Revealing patterns of the effective mechanical characteristics of cellular sheet polycarbonate for explosion venting panels

“…The main idea of protecting industrial premises in the event of explosion of combustible mixtures indoors is to ensure the strength and durability of bearing structures. The use of specialized steel structures and high-strength concrete reinforced with fibers was considered in paper [6]. Perforated plates were studied as a means to weaken an explosive wave in [7,8].…”

“…These parameters were determined for all types of CPS. Parameters defined in order to implement formulae (5) and (6) are given in Table 4. By applying the estimation data obtained from formula (5) and given in Table 4, we determined effective rigidity of CPS of varying thicknesses.…”

Reduction of the environmental impacts of reinforced concrete columns by increasing the compressive strength: a life cycle approach

“…The production of higher strength concretes has been increasing in the last years to improve the performance of the structures [14]- [16]; however, the increased strength is achieved by higher amount of cements, which increase the environmental impacts of the concrete mixture.…”

The Effect of Numerical 2D and 3D Fem Element Modelling on Strain and Stress Distributions at Laser Weld Notches in Steel Sandwich Type Panels

“…For instance, panels with X and Y type stiffeners (optionally with inner core) reveal higher ability to absorb energy during collision [12], [13], [14], [15], [16], [17]. Other variants of multilayer structures with advanced mechanical properties resulting from the use of light concrete as filling material can be found in [18], [19], [20]. Thus, depending on the planned application, sandwich structures can have different types of stiffeners, different dimensions of individual structural components, and additional inner space filling.…”