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A platform for research: civil engineering, architecture and urbanism
Dynamic and long-term performance of wood friction connectors for timber shear walls
Highlights The dynamic and long-term performance of a connector using a wood friction is investigated. The dynamic performance of shear walls with the connectors was compared with that of conventional shear walls in shake table tests. Friction tests of the connections and the wall were periodically conducted along with stress relaxation tests of wood. Experimental results suggest that the connectors have a high potential for practical use in indoor environments.
Abstract This paper presents the results of shake table tests and periodical friction tests to evaluate the dynamic and long-term performance of a novel connector using a wood friction (friction-based connectors). The friction-based connectors are a quite simple system in which the wood is bolted transversely to generate friction force. The shake table tests showed that the type of hysteresis loop of the wall with the friction-based connectors exhibited a bilinear, and significantly reduced the maximum response displacement even when the conventional walls were combined. In addition, more than 60% of the total energy was absorbed by the wall with friction-based connectors, even the load bearing ratio of the wall was about 30%. The periodical friction tests of the connectors and the wall with the friction-based connectors indicated that the friction forces were mostly linked to the relaxation behavior of wood, and although the friction forces were significantly affected by humidity fluctuations, long-term friction forces were expected to be maintained.
Dynamic and long-term performance of wood friction connectors for timber shear walls
Highlights The dynamic and long-term performance of a connector using a wood friction is investigated. The dynamic performance of shear walls with the connectors was compared with that of conventional shear walls in shake table tests. Friction tests of the connections and the wall were periodically conducted along with stress relaxation tests of wood. Experimental results suggest that the connectors have a high potential for practical use in indoor environments.
Abstract This paper presents the results of shake table tests and periodical friction tests to evaluate the dynamic and long-term performance of a novel connector using a wood friction (friction-based connectors). The friction-based connectors are a quite simple system in which the wood is bolted transversely to generate friction force. The shake table tests showed that the type of hysteresis loop of the wall with the friction-based connectors exhibited a bilinear, and significantly reduced the maximum response displacement even when the conventional walls were combined. In addition, more than 60% of the total energy was absorbed by the wall with friction-based connectors, even the load bearing ratio of the wall was about 30%. The periodical friction tests of the connectors and the wall with the friction-based connectors indicated that the friction forces were mostly linked to the relaxation behavior of wood, and although the friction forces were significantly affected by humidity fluctuations, long-term friction forces were expected to be maintained.
Dynamic and long-term performance of wood friction connectors for timber shear walls
Wakashima, Yoshiaki (author) / Ishikawa, Koichiro (author) / Shimizu, Hidemaru (author) / Kitamori, Akihisa (author) / Matsubara, Doppo (author) / Tesfamariam, Solomon (author)
Engineering Structures ; 241
2021-03-29
Article (Journal)
Electronic Resource
English
A numerical study of the seismic behaviour of timber shear walls with slip-friction connectors
| Online Contents | 2012