When designing buildings with sandwich panels engineers must account for seismic forces to ensure structural safety and کانکس ساندویچ پانل occupant protection during earthquakes. These panels feature dual metal facings bonded to a low-density thermal core are popular for their speed of installation and thermal efficiency. These attributes—low flexural rigidity and elevated specific weight—introduce significant seismic design complexities.

One key consideration is the connection between the panels and the primary structural frame. These connections must be designed to accommodate in-plane and out-of-plane movements without causing panel failure or detachment. Overly stiff connections can induce stress concentrations, resulting in core fracture or face sheet separation. Engineers should prioritize ductile, energy-dissipating connections that permit controlled displacement.

Another critical factor is the continuity of the lateral force-resisting system. Many designers mistakenly classify them as non-load-bearing enclosures. Properly integrated panels can augment the building’s shear capacity. It is essential to assess their potential role in lateral load transfer and tailor connection details.

This often requires collaboration between architectural and structural teams to ensure the panel layout supports the building’s seismic strategy.

The choice of core material directly influences seismic response.

The thermal core’s mechanical properties vary significantly across material families.

Polyurethane and polystyrene cores are vulnerable to compaction under intense lateral forces.

While mineral wool cores offer better fire resistance and some energy absorption properties.

The metal skins must be thick enough to resist buckling and maintain integrity during seismic shaking.

Architectural shape governs torsional and vibrational behavior.

Buildings with large unbraced panel areas are prone to rotational displacement.

Avoiding eccentricities and asymmetries reduces stress concentration risks.

Comprehensive detailing including girts, spandrels, and seismic fastening systems improves performance.

Inspection protocols are critical for sustaining long-term seismic integrity.

Small displacements or micro-cracks may initiate progressive failure.

Proactive monitoring programs must be implemented to detect early signs of distress.

In summary, while sandwich panels offer many advantages in modern construction their use in seismic zones demands careful attention to connection details, material behavior, structural integration, and long-term resilience. Engineers must integrate panels as active seismic elements, not passive cladding

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Pub: 24 Sep 2025 13:10 UTC

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