Abstract
The latest earthquakes in Europe exposed some critical problems in the connections of cladding panels in industrial precast reinforced concrete (PRC) structures. These connections did not perform as desired, causing the panels to fall, leading to significant nonstructural damage that resulted in the loss of human life and significant socio-economic impacts due to the interruption of business. Furthermore, in addition to the behavior of the cladding system itself, it is still not clear to what extent it can influence the overall seismic performance of the main structure. Making use of a simplified macroelement, the present study assesses the seismic performance of commonly employed cladding-to-structure connections, as well as the interaction of cladding panels with industrial PRC buildings. The analyses were carried out considering a PRC building representative of a Portuguese industrial park, studied with and without cladding panels. The seismic behavior of the structure was assessed considering both nonlinear static and dynamic procedures.
Highlights
In Europe, industrial precast reinforced concrete (PRC) buildings represent a significant part of the industrial building stock [1,2]
Precast reinforced concrete industrial buildings are structures with significantly more flexibility when compared with traditional RC residential building, due to the higher story height and the column boundary condition, usually materialized through cantilever columns fixed at the base with prestressed beams with hinged connections between these two elements
Considering that numerical spring includes the contribution of all the connections within the frame, the force and displacements assigned to each reference point of the trilinear relation (Fmacro and δmacro ) should be determined based on the following Equations (1) and (2): Fmacro = F1 × Np × Nc δmacro = δ1 × Np × 2 (2)
Summary
In Europe, industrial precast reinforced concrete (PRC) buildings represent a significant part of the industrial building stock [1,2]. In and a Portuguese industrial park, the most arrangement of observed cladding simplified procedures, ignoring the interaction with the frame and it is considered that panels is the horizontal one (Figure 2), which has been identified by several authors they do not contribute to seismic behavior. In a Portuguese industrial park, the most current arrangement of observed cladding chanical connections that are designed to support forces that are orthogonal to the plane panels is the As horizontal one The seismic performance, assessed with nonlinear static and dynamic analyses, is analyzed considering models with and without cladding panels, simulated through a simplified macroelement representative of the cladding-to-structure connections commonly used This novel model was calibrated based on experimental tests and can be applied in future simulation in different software platforms. The results of the analysis and seismic assessment were carried out as a function of force, displacement, and dissipated energy
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