Critical Seismic Strategies for Sandwich Panel Structures > 자유게시판

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In structures utilizing sandwich panel systems engineers must account for seismic forces to ensure structural safety and 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. Yet their limited rigidity combined with elevated mass-to-strength characteristics create distinct vulnerabilities in earthquake-prone regions.

A critical design factor lies in the interface between the cladding and the main load-bearing structure. These connections must be designed to accommodate in-plane and out-of-plane movements without causing panel failure or detachment. Rigid connections may transfer excessive forces to the panels, leading to cracking or delamination of the core material. Engineers should prioritize ductile, energy-dissipating connections that permit controlled displacement.

Another critical factor is the continuity of the lateral force-resisting system. They are frequently misinterpreted as purely enveloping elements. When securely fastened to primary framing, they significantly enhance lateral resistance. 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.

Material selection also plays a role.

Each core type responds uniquely to dynamic loading: polyurethane, mineral wool, or expanded polystyrene.

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

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

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

The building’s form directly influences its dynamic response to ground motion.

Elongated, high-rise structures with wide panel modules exhibit higher torsional sensitivity.

Regular, planar configurations minimize torsional coupling.

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

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

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

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