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Experimental Testing of a Low-Damage Post-Tensioned C-Shaped CLT Core-Wall
| 题名： | Experimental Testing of a Low-Damage Post-Tensioned C-Shaped CLT Core-Wall |
| 正文语种： | eng |
| 作者： | Brown, Justin R.;Li, Minghao;Palermo, Alessandro;Pampanin, Stefano;Sarti, Francesco |
| 作者单位： | Univ Canterbury Dept Civil & Nat Resources Engn Private Bag 8400 Christchurch 8140 New Zealand;Univ Canterbury Dept Civil & Nat Resources Engn Private Bag 8400 Christchurch 8140 New Zealand;Univ Canterbury Dept Civil & Nat Resources Engn Private Bag 8400 Christchurch 8140 New Zealand;Sapienza Univ Rome Dept Struct & Geotech Engn Via Eudossiana 18 I-00184 Rome Italy;PresStressed Timber Ltd PTL Struct Consultants 10-357 Madras St Christchurch 8013 New Zealand |
| 摘要： | The development of strong and stiff lateral load-resisting systems (LLRS) is essential for mid-rise and high-rise timber buildings. On the other hand, within a seismic design philosophy, strength/stiffness and ductility/drift capacity typically appear as opposite target parameters, depending on the acceptable level of damage. For improved stiffness and strength, core-wall tubular structural forms commonly are used for taller reinforced concrete (RC) buildings. This paper presents an experimental study of a new type of LLRS in cross-laminated timber (CLT). A post-tensioned C-shaped CLT core-wall mainly using screwed connections was designed and tested under unidirectional and bidirectional cyclic loading. It was found that the mixed-angle screwed connection solution was the most effective. The highest partial composite action of 60%-70% was reached and the core-wall system stiffness at serviceability limit state increased more than four times compared with a decoupled test with only friction between the CLT panels. The (unbonded) post-tensioning technology provided strong and stiff core-wall base connections with recentering capability and small residual displacements. The experimental test results confirmed that significant system strength/stiffness and ductility/drift capacity can be achieved in a post-tensioned C-shaped CLT core-wall system with minimal damage through careful connection detailing. (C) 2020 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 147 |
| 期： | 3 |
| 页码： | 04020357.1-04020357.16 |
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