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What is a shear key in steel structures?

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 In steel structure engineering , the column base connection serves as the pivotal interface linking the superstructure to the concrete foundation below. It must safely and reliably transmit various loads from the upper structure: vertical pressure , uplift forces , bending moments , and horizontal shear forces . When horizontal shear forces become substantial, the friction alone between the column base plate and the concrete foundation surface proves insufficient to resist them. At this juncture, a critical small component becomes indispensable—the shear key . Shear keys, as the name suggests, are structural steel connection components specifically designed to resist and transmit horizontal shear forces. Essentially, they are short steel members. Installation location: Typically welded or anchored to the base plate of a steel column (or other load-bearing components such as equipment supports ), with its lower end embedded in the concrete foundation or concrete structure cast ...

What are the superiority of the space frame structure?

What are the superiority of the space frame structure?

space frame

1. Space work, simple force transmission path, is a better large-span roof structure.

2. Light weight, good economic index.

3. Large stiffness, good seismic performance.

4. Easy construction and installation.

5. The rods and nodes are easy to be stereotyped and commercialized, and can be produced in batches in the factory, which is conducive to improving production efficiency.

6. The plan layout of the net frame is flexible and the roof is flat, which is conducive to the ceiling, installation of pipes and equipment.

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