TY - GEN
T1 - Disassembly and Structural Reuse Potential of Steel-Timber Shear Connections with Screws
AU - Bompa, Dan V.
AU - Ungureanu, Viorel
AU - Elghazouli, Ahmed Y.
AU - Afsal, Ahamed
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/5/10
Y1 - 2024/5/10
N2 - The paper evaluates the disassembly capability and reuse potential of steel-timber shear connections. Experiments involving double shear configurations with coach screws of three diameters are detailed. Monotonic tests were first performed for each configuration to evaluate the stiffness, strength, and ductility. Counterparts were then tested under ten loading-unloading cycles, to 40% of the capacity obtained from the monotonic tests, to evaluate stiffness degradation characteristics, screw deformations, and cross-laminated timber (CLT) panel damage. After disassembly and measurements, the specimens were reassembled and tested up to failure. The measurements indicated that the secant stiffness enhances after the first loading cycle and is then largely constant to the tenth cycle. After disassembly, the screws had permanent deformations, and the timber panels indicated limited damage during the cyclic loading. The reassembled specimens had similar stiffness, strength, ductility, and failure modes as the monotonic test specimens. Based on test measurements, both the steel profile and the CLT panels have full structural reusability. The test results can be used as a measure for quantification of the structural reuse potential through an index that can be incorporated into established building circularity indicators.
AB - The paper evaluates the disassembly capability and reuse potential of steel-timber shear connections. Experiments involving double shear configurations with coach screws of three diameters are detailed. Monotonic tests were first performed for each configuration to evaluate the stiffness, strength, and ductility. Counterparts were then tested under ten loading-unloading cycles, to 40% of the capacity obtained from the monotonic tests, to evaluate stiffness degradation characteristics, screw deformations, and cross-laminated timber (CLT) panel damage. After disassembly and measurements, the specimens were reassembled and tested up to failure. The measurements indicated that the secant stiffness enhances after the first loading cycle and is then largely constant to the tenth cycle. After disassembly, the screws had permanent deformations, and the timber panels indicated limited damage during the cyclic loading. The reassembled specimens had similar stiffness, strength, ductility, and failure modes as the monotonic test specimens. Based on test measurements, both the steel profile and the CLT panels have full structural reusability. The test results can be used as a measure for quantification of the structural reuse potential through an index that can be incorporated into established building circularity indicators.
KW - Circularity
KW - Disassembly capability
KW - Reuse potential
KW - Steel-timber
UR - http://www.scopus.com/inward/record.url?scp=85194096082&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-57800-7_21
DO - 10.1007/978-3-031-57800-7_21
M3 - Conference article published in proceeding or book
AN - SCOPUS:85194096082
SN - 9783031577994
T3 - Lecture Notes in Civil Engineering
SP - 231
EP - 242
BT - 4th International Conference "Coordinating Engineering for Sustainability and Resilience" and Midterm Conference of CircularB “Implementation of Circular Economy in the Built Environment”
A2 - Ungureanu, Viorel
A2 - Bragança, Luís
A2 - Baniotopoulos, Charalambos
A2 - Abdalla, Khairedin M.
PB - Springer Science and Business Media Deutschland GmbH
T2 - 4th International Conference on Coordinating Engineering for Sustainability and Resilience and the Midterm Conference of the COST Action CircularB on Implementation of Circular Economy in the Built Environment, CESARE 2024
Y2 - 29 May 2024 through 31 May 2024
ER -