Engineering Seismic Resilience in Sandwich Panel Construction > 자유게시판

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For constructions employing insulated metal sandwich panels engineers must account for seismic forces to ensure structural safety and occupant protection during earthquakes. Typically composed of two rigid metal layers enclosing a thermally efficient core are popular for their speed of installation and thermal efficiency. However, their relatively low stiffness and high weight-to-strength ratio present unique challenges in seismic zones.

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. Immovable joints risk propagating brittle failures through the insulated core. Flexible connections that allow controlled movement while maintaining lateral stability are preferred.

Sandwich panels are not merely aesthetic cladding—they can be structural elements. Sandwich panels should not be treated as non-structural cladding. In many cases, they contribute to overall lateral stiffness, especially when properly anchored to beams and columns. Engineers must verify whether the panels can act as diaphragms or خرید کانکس shear walls and design the connections accordingly.

Close coordination between design disciplines is non-negotiable.

Material selection also plays a role.

The core material—whether it is polyurethane, mineral wool, or polystyrene—has different behaviors under stress.

Rigid foam cores may be more prone to crushing under high shear loads.

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

Thinner skins risk wrinkling or out-of-plane collapse under dynamic loading.

Architectural shape governs torsional and vibrational behavior.

Tall or slender buildings with large panel spans are more vulnerable to torsional effects during earthquakes.

Designers should aim for symmetrical layouts and avoid irregular shapes that could lead to uneven force distribution.

Edge stiffeners, continuous lateral ties, and robust foundation connections collectively enhance seismic resilience.

Post-earthquake assessments of panel systems are frequently neglected yet essential.

Even minor damage to panel connections or core integrity can compromise future performance.

Building owners in seismic regions should establish inspection protocols to identify and repair any panel displacement, fastener loosening, or core degradation promptly.

Despite their popularity in rapid-build applications 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