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What are the seismic performance differences between bolted and welded table frames?
When evaluating the seismic performance of table frames, the choice between bolted and welded connections plays a critical role in structural stability and earthquake resistance. Bolted table frames offer flexibility and ease of assembly, making them ideal for modular designs. However, under seismic loads, bolted joints may experience loosening or slippage, potentially compromising structural integrity.
Welded table frames, on the other hand, provide superior rigidity and load distribution due to their continuous connections. This makes them highly resistant to seismic forces, as welded joints are less likely to fail under dynamic loading. However, welded frames lack adjustability and may suffer from stress concentrations, leading to brittle fractures in extreme conditions.
For high-risk seismic zones, welded frames are often preferred for their robustness, while bolted frames may be suitable for areas with moderate seismic activity, provided proper maintenance and periodic inspections are conducted. Engineers must weigh factors like cost, adaptability, and long-term performance when selecting the optimal frame type for earthquake-prone environments.
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