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Main composition and frame type of steel structure

Main composition and frame type of steel structure

  • 2021-10-22

Steel structure project is a structure mainly made of steel structures, and is one of the main types of building structures in modern construction engineering. The structure is mainly composed of steel beams, steel columns, and other components made of section steel and steel plates. The components are usually connected by welding, bolts, or rivets. Because of its light weight and easy construction, it is widely used in industrial factory warehouses, multi-storey commercial buildings, agricultural breeding and other fields.


Main components:

1>Load-bearing system: primary steel, secondary steel, purlin

2>Enclosure system: wall panel, top panel, front seal / side seal, inner and outer ridge tiles

3>Connection system: anchor bolts, high-strength bolts, ordinary bolts, ordinary nuts

4>Other systems: doors and windows, ventilation and lighting



Steel frame

1、Mechanical principle of portal steel frame:

The structure is mainly composed of columns and beams. The transverse steel frame is the main stress structure, and the steel frame is a plane stress system. In order to ensure longitudinal stability, roof support and inter-column support are provided.


2、Steel frame form:

1>Portal steel frame;

2>Portal steel frame with crane beam;

3>With partial two-layer portal steel frame;

4>Multilayer portal steel frame


3、Derived form of steel frame:

1>Single slope and single span;

2>Gable steel frame;

3>Single slope continuous span;

4>Even across a single ridge;

5>Even across multiple roofs


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