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Design Approach to Predict Post-Tensioning Losses in Post-Tensioned Timber Frames
| 题名： | Design Approach to Predict Post-Tensioning Losses in Post-Tensioned Timber Frames |
| 其他题名： | Armstrong,L.D.,and R.S.T.Kingston.1960."Effect of moisture changes on creep in wood."Nature 185(4716):862-863.https://doi.org/10.1038/185862c0. |
| 正文语种： | 英文 |
| 作者： | Gabriele Granello |
| 关键词： | Post-tensioned timber;Pres-Lam;Long-term;Creep;Post-tensioning loss |
| 摘要： | Since 2010, twelve post-tensioned timber (Pres-Lam) buildings have been constructed throughout the world. The technology relies on unbonded post-tensioning tendons to provide moment capacity to beam-column, wall-foundation, or column-foundation connections. Supplemental energy dissipation can be introduced by mild steel bars or replaceable damping devices when designing buildings for high seismic risk areas. Creep within the timber elements leads to losses in post-tensioning force over time. The amount of post-tensioning loss depends on the members' geometry, environmental service conditions, and the initial moisture content of wood. This paper presents a design approach for estimating, via hand calculations, the amount of post-tensioning loss expected for the most common design configurations. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N08024 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002101 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 08 |
| 页码： | 292-304 |
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