Sensitivity analyses of cables to suspen-dome structural system

Area of Science:

• Structural Engineering
• Computational Mechanics

Background:

• Cable pre-stress is critical for suspen-dome construction.
• Ensuring exact pre-stress introduction in situ is challenging.
• Evaluating pre-stress variation effects on structural behavior is necessary.

Purpose of the Study:

• To investigate the sensitivity of suspen-dome systems to variations in cable pre-stresses.
• To analyze the impact of pre-stress variations on static, dynamic, and buckling behaviors.
• To provide practical suggestions for managing pre-stress in suspen-dome structures.

Main Methods:

• Employed an orthogonal design method for sensitivity analysis.
• Focused investigation on a Kiewitt suspen-dome model.
• Conducted parametric studies on pre-stressed cable variations.

Main Results:

• Suspen-dome structures exhibit sensitivity to pre-stresses in all cables.
• Sensitivity is dependent on cable location within the structure.
• The type of structural behavior (static, dynamic, buckling) influences sensitivity.

Conclusions:

• Pre-stress management is crucial for suspen-dome structural integrity.
• Understanding cable pre-stress sensitivity aids in design and construction.
• The study offers insights for optimizing suspen-dome performance and stability.