原文传递
Application of a New System of Self-Tensioning to the Design of Large-Span Wood Floor Framings
| 题名： | Application of a New System of Self-Tensioning to the Design of Large-Span Wood Floor Framings |
| 正文语种： | 英文 |
| 作者： | D. Otero-Chans;J. Estevez-Cimadevila;E. Martin-Gutierrez;J. Perez-Valcarcel |
| 作者单位： | Campus de A Zapateira |
| 关键词： | Posttensioning; Self-tensioning; Prestressing; Pretensioning; Tensioning systems; Long span; Timber flooring; Wooden structures. |
| 摘要： | This study describes a self-tensioning system in which the gravitational loads acting on a horizontal structural element are automatically converted to a posttensioning force on that comp on ent. The self-tensioning effect has a variable intensity, constantly adjusted depending on the applied service loads. The self-tensioning is eccentrically applied over the cross section, and it generates a negative moment that compensates the deformations due to the gravitational loads. The system can be utilized in beams, slabs, and structural framings of different materials and can be implemented using different mechanical and hydraulic solutions. The study describes the operation of a mechanical solution for the self-tensioning system and analyzes its behavior in large-span timber floor framings. When combined with conventional pretensioning, the self-tensioning system notably improves the strength and deformation behavior and permits a design of timber floor framings with a total height of 0.03 times the span length, achieving relative deflections below 1/1,000 of the span for the service loads of the structure. DOI: 10.106l/(ASCE)ST.1943-541X.0001486. © 2016 American Society of Civil Engineers. |
| 出版日期： | 2016.06 |
| 出版年： | 2016 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.142 |
| 期： | NO.06 |
| 页码： | 04016012 |
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