In which of the following case we avoid bolted connectiona)Connection ...
Because bolted joints are susceptible to vibration and in case of frequent earthquake, it occurs.
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In which of the following case we avoid bolted connectiona)Connection ...
Bolted connections are widely used in construction to connect structural members. However, there are certain situations where bolted connections are avoided. One such situation is when the connection is subjected to frequent earthquake load.
Reasons for avoiding bolted connections in earthquake-prone areas:
1. Bolted connections are not ductile: In an earthquake, the structure undergoes severe dynamic loading that requires ductility in the connection. Bolted connections are not ductile and can fail in a brittle manner.
2. Bolted connections are prone to loosening: The repeated cycles of loading and unloading can cause bolted connections to loosen, which can be dangerous in an earthquake.
3. Bolted connections are difficult to inspect: In an earthquake-prone area, inspections are critical to ensure the safety and integrity of the structure. Bolted connections are difficult to inspect, and any damage or deterioration may go unnoticed.
Alternative connection methods:
1. Welded connections: Welded connections are more ductile than bolted connections and can withstand the dynamic loads of an earthquake.
2. Moment connections: Moment connections are designed to resist dynamic loads and are commonly used in earthquake-prone areas.
In conclusion, bolted connections are avoided in earthquake-prone areas due to their lack of ductility, tendency to loosen, and difficulty to inspect. Welded connections and moment connections are preferred alternatives that can withstand the dynamic loads of an earthquake.