Engineering Seismic Resilience in Sandwich Panel Construction > 자유게시판

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In structures utilizing sandwich panel systems engineers must account for seismic forces to ensure structural safety and کانکس ساندویچ پانل 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. Overly stiff connections can induce stress concentrations, resulting in core fracture or face sheet separation. Flexible connections that allow controlled movement while maintaining lateral stability are preferred.

Another critical factor is the continuity of the lateral force-resisting system. Many designers mistakenly classify them as non-load-bearing enclosures. When securely fastened to primary framing, they significantly enhance lateral resistance. Engineers must verify whether the panels can act as diaphragms or shear walls and design the connections accordingly.

Integrated design processes must align facade configurations with seismic performance goals.

The choice of core material directly influences seismic response.

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

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

Rock wool cores demonstrate superior post-crack integrity and damping capacity.

Face sheets require adequate gauge to prevent local instability.

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.

Reinforced edges, continuous horizontal and vertical bracing, and proper anchorage to foundations all help mitigate these risks.

Regular maintenance and inspection after seismic events are often overlooked but vital.

Small displacements or micro-cracks may initiate progressive failure.

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

Though widely adopted for efficiency and insulation their use in seismic zones demands careful attention to connection details, material behavior, structural integration, and long-term resilience. A holistic approach that treats the panels as part of the seismic force-resisting system—not just an envelope—will ensure safety and durability in earthquake-prone areas