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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 ...
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What are the types of space frame structures?

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 What are the types of space frame structures?

space frame


1,According to the structure of the net frame itself can be divided into: single-layer net frame structure, double-layer net frame structure;three-layer net frame. Among them, single-layer and three-layer net frame are suitable for the case of very small span (not more than 30m) and particularly large span (more than 100m), respectively.

2, according to the construction material is divided into: steel space frame, aluminium space frame, wooden space frame, plastic space frame, reinforced concrete space frame and combined space frame

3, according to the support situation can be divided into: perimeter support, four-point support, multi-point support, three-side support, opposite side support and mixed support form.

4,According to the different composition, the net frame can be divided into four categories: 

1、Cross truss system net frame.

2. Triangular cone system net frame.

3. Four-cornered cone system net frame.

4. Hexagonal cone system.

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What is a coal bunker?

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Suspension structures

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What is the difference between a single-layer reticulated shell and a double-layerreticulated shell?

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  The differences between single-layer reticulated shells and double-layer reticulated shells are as follows: Structural Configuration   Single-layer reticulated shell: Composed of a single layer of members, with the members directly connected to form a grid structure . The node configuration is relatively simple, typically employing rigid connections that allow the members to bear not only axial forces but also bending moments and shear forces.   Double-layer reticulated shell: Consists of upper and lower parallel layers of members connected by web members, forming a truss-like structural system. The nodes are generally hinged, and the members primarily bear axial forces. Its configuration is relatively complex, requiring more members and nodes to ensure structural stability and load-bearing capacity. Structure Single-layer mesh shell: composed of one layer of rods, the rods are directly connected to form a mesh structure, the node structure is relatively simple, usually...
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