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Optimal Design of Bubble Deck Concrete Slabs: Sensitivity Analysis and Numerical Homogenization
Natalia Staszak1, Tomasz Garbowski2, Barbara Ksit3
1Doctoral School, Department of Biosystems Engineering, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland.
Materials (Basel, Switzerland)
|March 29, 2023
Summary
Bubble deck floors reduce building self-weight. Slab height and void geometry are key for load capacity, while concrete and reinforcement have minor impacts on bubble deck floor stiffness.
Area of Science:
- Structural Engineering
- Materials Science
- Building Construction
Background:
- Layered or hollow floors offer reduced self-weight in building construction.
- Designing these innovative floor systems requires specialized expertise.
- Bubble deck floors represent a specific type of hollow floor technology.
Purpose of the Study:
- To identify critical design parameters influencing bubble deck floor load capacity.
- To optimize bubble deck floor design for maximum stiffness and minimum self-weight.
- To establish a basis for the optimization procedure of bubble deck floor systems.
Main Methods:
- Sensitivity analysis was employed to determine parameter importance.
- Numerical homogenization was utilized for detailed structural assessment.
- Extensive case studies were conducted to validate findings.
Main Results:
- Slab height and void geometry significantly impact load-bearing capacity.
- Concrete class and reinforcement levels have secondary effects on load capacity.
- Void geometry, arrangement, and shape are crucial for reducing self-weight.
Conclusions:
- Optimal bubble deck floor design prioritizes slab height and void characteristics.
- Reinforcement details and concrete strength are less critical for load capacity.
- The study provides key parameters for optimizing bubble deck floor performance.
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