Prefabricated Research: Mastering Steel Structure Diagrams in Just One Minute

Steel Structure Diagram

What Is Steel Structure?

Steel structures consist of components connected by steel sections, including steel beams, roof trusses, tower frames, scaffolding, and more.

Steel Structure Diagram

This refers to drawings used to represent steel structures in detail.

Section Steel

Section steel is a type of steel shaped and sized according to standard specifications by steel mills. Common types include angle steel, I-beams, and channel steel.

Code and Labeling of Steel Sections

Connection Methods for Medium-Sized Steel in Steel Structures

• Welding
• Riveting
• Bolt Connection

1. Welding

Welding involves heating the steel at the connection points to melt both the steel and welding rod. Once cooled, the materials fuse into an inseparable unit.

Types of Weld Seams and Their Symbols

• Groove Weld Seam
• Corner Weld Seam
• Plug Weld Seam

Graphic and Auxiliary Symbols for Welds

2. Labeling Welds

Steel structure diagrams must clearly indicate the location, type, size, and any auxiliary requirements for welds.

Weld Labeling Methods

Drawing and Annotation of Discontinuous Welds

For discontinuous weld seam distribution, use a solid line for visible weld seams and a fine grid line for invisible seams.

3. Riveting

Riveting connects two or more steel plates using rivets.

Types of Riveting

• Factory Connection
• On-site Connection

Rivet Types

4. Bolt Connection

Unlike welding and riveting, which create permanent joints, bolted connections are removable.

Connection Methods

Legend for Bolts, Holes, and Welding Rivets

Steel Beam Structure Diagram

Overview

Steel beams are widely used in bridges with large and medium spans.

Types of Steel Beams

• Steel Plate Beam
• Steel Truss Beam

Example: Simply supported bolted and welded beam for underpasses.

Contents of a Steel Beam Structure Diagram

• Design Outline Drawing
• Node Diagram
• Rod Diagram
• Parts Drawing

Design Outline Drawing

Node Diagram

Node Construction Diagram

Assembly of Splicing and Filling Boards

3D Diagram

Detailed Node Board Drawing

Rod Diagram

Parts Drawing

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