Airport Terminal Truss

Common Types of Airport Space Frames:

1. Flat Plate Space Frame
Structural Characteristics: Composed of double or multiple layers of flat plate-shaped grids, with members primarily bearing axial forces and uniform stress distribution.

Advantages: High structural efficiency and mature construction technology.

2. Curved Surface Shell
Structural Characteristics: Possesses a three-dimensional curved surface shape (such as hyperboloids or freeform surfaces), enabling greater span capacity through structural morphology.

Advantages: Allows for diverse architectural designs.

3. Hybrid Truss and Space Frame Structure
Structural Characteristics: Reinforcing trusses are embedded in key load-bearing areas (such as skylight openings or large-span areas), forming a hybrid load-bearing system.

Advantages: Combines the integrity of the space frame with the efficient force transmission capacity of the truss, commonly used for irregular or open roofs.

4. Conical Space Frame
Structural Characteristics: Composed of basic units such as square pyramids and triangular pyramids, possessing high spatial stiffness, suitable for large-span buildings with flexible planar shapes.

Advantages: The most common form of flat plate space frame, especially the widely used upright square pyramid space frame.

The core advantages of airport space frame structures:

1. Superior mechanical performance and safety assurance: As a three-dimensional load-bearing system, the space frame structure boasts excellent integrity and a high safety reserve. It is a highly statically indeterminate structure; even if local members fail, internal forces can be readjusted to prevent progressive collapse. Furthermore, due to its light weight and high stiffness, it exhibits excellent seismic performance, effectively withstanding asymmetric and dynamic loads.

2. Economical and efficient construction method: By utilizing spatial load-bearing capacity, the strength of materials is fully utilized, significantly saving steel. Most members and nodes are prefabricated in the factory, ensuring uniform specifications and facilitating standardized production and quality control. Construction can employ ground assembly and overall lifting techniques, reducing high-altitude work and shortening the construction period.

3. Providing limitless possibilities for architectural function and aesthetics: The space frame structure easily achieves column-free open spaces exceeding 60 meters, meeting the terminal's demand for spaciousness. Its regular member arrangement and flat roof facilitate ceiling installation, pipeline installation, and the installation of skylights.

4. Durable and environmentally friendly characteristics: Through reasonable anti-corrosion and fire-retardant coatings (such as the thick or thin fire-retardant coatings mentioned earlier), the space frame structure has good weather resistance and fire resistance, and proper maintenance can ensure a long service life. At the same time, its on-site assembly is mostly dry work, with low noise and dust pollution, and the steel can be recycled at the end of the building's life cycle, which is in line with the concept of green building and sustainable development.