Abstract
Sandwich panels are commonly used in façades and the roofs of industrial buildings due to their well-known advantages. However, there is limited data about the in-plane behavior of the panels. Hence, this paper aimed to propose a pseudoelastic truss model to represent the effective in-plane stiffness and strength properties of the corrugated sandwich panels with a polyurethane foam core. Two separate sets of experiments (mock-up and system test) were conducted in the laboratory. The variables were the number of fasteners, sheet thickness, loading direction, and number of ribs. The number of fasteners, sheet thickness, and loading direction are the most effective parameters for the in-plane behavior. A formula was proposed to compute axial stiffness of the truss members by considering the effective parameters. Experimental results showed that the proposed robust truss model could give a good estimate of the pseudoelastic stiffness and maximum load bearing capacity of the sandwich panels.
Original language | English |
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Pages (from-to) | 823-842 |
Number of pages | 20 |
Journal | Structures |
Volume | 29 |
DOIs | |
Publication status | Published - Feb 2021 |
Bibliographical note
Publisher Copyright:© 2020 Institution of Structural Engineers
Funding
This study was conducted in the framework of İTÜNOVA Technology Transfer Office Research Project titled “Determination of In-plane Behavior of Corrugated Sandwich Panel Type Roof Shelters.” The financial support provided by Turkish Precast Concrete Association through this project is greatly appreciated. The study was conducted at the Structural and Earthquake Engineering Laboratory (STEELab) of Istanbul Technical University. Support of the laboratory staff and the contributions of Günkut Barka and Hakan Ataköy are gratefully acknowledged.
Funders | Funder number |
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Turkish Precast Concrete Association | |
Istanbul Teknik Üniversitesi |
Keywords
- Analytical modelling
- Mechanical properties
- Mechanical testing
- Sandwich panels