A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Axial slip-friction connections for cross-laminated timber
https://orcid.org/0000-0003-1713-9925
Highlights Cross-laminated timber rocking walls dissipate energy through connection damage. Slip-friction connections were originally developed for steel structures. The SFC system was designed as a hold-down in a self-centering CLT rocking wall. Quasi-static, cyclic tests with SFC connections showed elastic-plastic behavior. Passive damping was close to typical idealized friction hysteresis models.
Abstract Cross-laminated timber (CLT) rocking walls limit internal building forces and dissipate seismic energy mostly through severe connection damage and related wood crushing. While collapse-prevention and life-safety performance can be achieved, the connections and CLT walls are permanently damaged and may be unreliable for resisting aftershocks. Slip-friction connections (SFCs), also known as slotted-bolted connections, are highly resilient passive dampers originally developed for steel structures. As part of a thorough research program to apply SFCs to CLT rocking walls, connection tests were conducted to better understand a novel application of multiple modern timber technologies. The research objectives were to design and test a slip-friction connection connected to cross-laminated timber with inclined self-tapping screws (STS) to determine the stiffness and passive damping properties of the assembly. The SFC system was designed for use as a slip-friction hold-down in a self-centering CLT rocking wall system. A series of quasi-static, cyclic axial tests with slip-friction connections was shown to impart ductile and elastic–plastic characteristics to an otherwise non-ductile CLT connection. Because the timber connection forces were limited below the STS yield strength by the slip-friction connectors, no wood damage was observed during SFC sliding. Compared to other sources, passive damping was found to be excellent and close to typical idealized friction hysteresis models. The slip-friction connections are a unique design using an efficient CLT to SFC connection, with no slack, that performs consistently after consecutive tests. Additionally, cursory equivalent-viscous-damping ratios were extracted for the elastic range of the STS to steel connection for small amplitude excitations below the slip force threshold.
Axial slip-friction connections for cross-laminated timber
https://orcid.org/0000-0003-1713-9925
Highlights Cross-laminated timber rocking walls dissipate energy through connection damage. Slip-friction connections were originally developed for steel structures. The SFC system was designed as a hold-down in a self-centering CLT rocking wall. Quasi-static, cyclic tests with SFC connections showed elastic-plastic behavior. Passive damping was close to typical idealized friction hysteresis models.
Abstract Cross-laminated timber (CLT) rocking walls limit internal building forces and dissipate seismic energy mostly through severe connection damage and related wood crushing. While collapse-prevention and life-safety performance can be achieved, the connections and CLT walls are permanently damaged and may be unreliable for resisting aftershocks. Slip-friction connections (SFCs), also known as slotted-bolted connections, are highly resilient passive dampers originally developed for steel structures. As part of a thorough research program to apply SFCs to CLT rocking walls, connection tests were conducted to better understand a novel application of multiple modern timber technologies. The research objectives were to design and test a slip-friction connection connected to cross-laminated timber with inclined self-tapping screws (STS) to determine the stiffness and passive damping properties of the assembly. The SFC system was designed for use as a slip-friction hold-down in a self-centering CLT rocking wall system. A series of quasi-static, cyclic axial tests with slip-friction connections was shown to impart ductile and elastic–plastic characteristics to an otherwise non-ductile CLT connection. Because the timber connection forces were limited below the STS yield strength by the slip-friction connectors, no wood damage was observed during SFC sliding. Compared to other sources, passive damping was found to be excellent and close to typical idealized friction hysteresis models. The slip-friction connections are a unique design using an efficient CLT to SFC connection, with no slack, that performs consistently after consecutive tests. Additionally, cursory equivalent-viscous-damping ratios were extracted for the elastic range of the STS to steel connection for small amplitude excitations below the slip force threshold.
Axial slip-friction connections for cross-laminated timber
https://orcid.org/0000-0003-1713-9925
Highlights Cross-laminated timber rocking walls dissipate energy through connection damage. Slip-friction connections were originally developed for steel structures. The SFC system was designed as a hold-down in a self-centering CLT rocking wall. Quasi-static, cyclic tests with SFC connections showed elastic-plastic behavior. Passive damping was close to typical idealized friction hysteresis models.
Abstract Cross-laminated timber (CLT) rocking walls limit internal building forces and dissipate seismic energy mostly through severe connection damage and related wood crushing. While collapse-prevention and life-safety performance can be achieved, the connections and CLT walls are permanently damaged and may be unreliable for resisting aftershocks. Slip-friction connections (SFCs), also known as slotted-bolted connections, are highly resilient passive dampers originally developed for steel structures. As part of a thorough research program to apply SFCs to CLT rocking walls, connection tests were conducted to better understand a novel application of multiple modern timber technologies. The research objectives were to design and test a slip-friction connection connected to cross-laminated timber with inclined self-tapping screws (STS) to determine the stiffness and passive damping properties of the assembly. The SFC system was designed for use as a slip-friction hold-down in a self-centering CLT rocking wall system. A series of quasi-static, cyclic axial tests with slip-friction connections was shown to impart ductile and elastic–plastic characteristics to an otherwise non-ductile CLT connection. Because the timber connection forces were limited below the STS yield strength by the slip-friction connectors, no wood damage was observed during SFC sliding. Compared to other sources, passive damping was found to be excellent and close to typical idealized friction hysteresis models. The slip-friction connections are a unique design using an efficient CLT to SFC connection, with no slack, that performs consistently after consecutive tests. Additionally, cursory equivalent-viscous-damping ratios were extracted for the elastic range of the STS to steel connection for small amplitude excitations below the slip force threshold.
Axial slip-friction connections for cross-laminated timber
Fitzgerald, Dillon (author) / Sinha, Arijit (author) / Miller, Thomas H. (author) / Nairn, John A. (author)
Engineering Structures ; 228
2020-10-21
Article (Journal)
Electronic Resource
English
Cross-laminated timber rocking walls with slip-friction connections
| Elsevier | 2020
Load-slip behaviour of steel-cross laminated timber (CLT) composite connections
| British Library Online Contents | 2016
Load-slip behaviour of steel-cross laminated timber (CLT) composite connections
| British Library Online Contents | 2016
Load-slip behaviour of steel-cross laminated timber (CLT) composite connections
| British Library Online Contents | 2016
Load-slip behaviour of steel-cross laminated timber (CLT) composite connections
| British Library Online Contents | 2016