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Probabilistic Assessment of a Light-Timber Frame Shear Wall with Variable Pinching under Repeated Earthquakes
| 题名： | Probabilistic Assessment of a Light-Timber Frame Shear Wall with Variable Pinching under Repeated Earthquakes |
| 正文语种： | eng |
| 作者： | Angelo Aloisio;Alessandro Contento;Rocco Alaggio;Bruno Briseghella;Massimo Fragiacomo |
| 作者单位： | Università degli Studi dell’Aquila;Fuzhou Univ.;Università degli Studi dell’Aquila;Fuzhou Univ.;Università degli Studi dell’Aquila |
| 摘要： | Abstract Pinching characterizes the hysteretic response of several structural systems. It is associated with a reduced dissipated hysteretic energy under cyclic loading and can significantly affect seismic performance, especially under repeated earthquakes. Although several scholars proposed advanced joint arrangements with reduced pinching, ordinary timber structures present pronounced pinching effects due to the local damage to the timber joints. This paper quantifies the impact of variable pinching on the seismic performance of a timber structural archetype. The authors modeled the hysteretic response of a light-timber framed assembly using an empirical hysteresis model and assessed the sensitivity of the displacement demand of the chosen archetype to pinching, number of earthquake repetitions, and spectral acceleration. The choice of an elementary structural archetype, rather than a more complex system, allows isolating the effects of pinching, which could otherwise be disguised by other phenomena, like force redistribution between structural assemblies due to plasticization. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 11 |
| 页码： | 1-14 |
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