Steel supports, also known as steel props or shoring, are steel components used to provide support to buildings or structures. They have various applications, mainly including the following:

1. Construction Projects: During construction, steel supports are used to hold temporary structures such as scaffolding, temporary walls, and concrete formwork, ensuring safety and stability throughout the construction process.

2. Deep Excavation Support: In deep excavation projects, steel supports are used to brace the excavation walls, preventing soil collapse. Common applications include underground parking lots, subway stations, and deep foundation excavations.

3. Bridge Construction: In bridge construction, steel supports are used to support bridge formwork and piers, ensuring the stability of the bridge during the construction phase.

4. Tunnel Support: During tunnel excavation, steel supports are used to brace the tunnel roof and walls, preventing collapse and ensuring construction safety.

5. Structural Reinforcement: In building or structural reinforcement projects, steel supports are used to temporarily support sections being reinforced, ensuring the structure's safety during the reinforcement process.

6. Rescue and Emergency Projects: After natural disasters or accidents, steel supports are used to temporarily brace damaged buildings or structures to prevent further collapse, providing safety for rescue operations.

7. Industrial Equipment Support: When installing or repairing large industrial equipment, steel supports are used to brace the equipment, ensuring safety and stability during the installation or repair process.

In summary, steel supports play a crucial role in various construction and engineering projects, providing necessary support and safety assurance.