Comparison of CLT Design Methods to Composite Beam Theory
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Bibliographic Details
| Author(s): |
Joshua Schultz
(Gonzaga University, Spokane WA, USA)
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 1949-1956 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.1949 | ||||
| Abstract: |
Cross-laminated timber (CLT) is increasingly being used as a primary structural material. Since about 60-70% of structural material is associated with the floor system, sustainability gains are efficiently realized by use of CLT floor plates. Most floors can be modelled as 1-way slabs and idealized via beam theory; however, increasingly complicated composite beam and plate theories are being proposed for CLT design. This research compares methods from the US CLT Handbook to a composite beam design equation derived from elasticity theory. All deflection and stress results are compared to a benchmarked finite element model. Results show that CLT Handbook methods provide stresses and deflections within 5% of the FEA and composite beam theory. However, results indicate the shear analogy method over-estimates required laminate thickness for 4.6m span by up to 30% for deflection-governed design compared to the composite beam theory. |
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| Keywords: |
composite beam theory cross-laminated timber rolling shear elasticity wood design
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