Study on static and dynamic performance of aircraft maintenance hangar under multiple load combinations

Area of Science:

• Structural Engineering
• Mechanical Engineering
• Aerospace Engineering

Background:

• Aircraft maintenance hangars require robust structural integrity to withstand various loads.
• Understanding the collaborative performance of roof and support structures is crucial for hangar design.

Purpose of the Study:

• To analyze the static and dynamic mechanical responses of a single-span aircraft maintenance hangar's roof and lower support structures.
• To identify critical areas of stress and displacement under different load combinations.

Main Methods:

• Establishment of a numerical model for a single-span aircraft maintenance hangar.
• Simulation of static and dynamic mechanical responses under various load combinations.

Main Results:

• Primary axial force and bending moments are concentrated in the main truss and lower support column.
• Maximum compression in main trusses, maximum tension in the lower inner truss near the hangar gate.
• Main truss displacement exceeds secondary truss displacement; roof mid-span displacement is greater than at edges.
• Maximum support reactions identified at main truss column, rear gable wall column, and lateral bracing.
• First three vibration modes and frequencies significantly impact seismic response.

Conclusions:

• The study provides critical theoretical support for designing large-span aircraft maintenance hangars.
• Findings guide optimized design strategies to enhance structural safety and efficiency.
• Contributes to advancements in long-span hangar construction and maintenance practices.