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Experimental and Analytical Investigation of FRP Retrofitted Glued-Laminated Beams Subjected to Simulated Blast Loading
| 题名： | Experimental and Analytical Investigation of FRP Retrofitted Glued-Laminated Beams Subjected to Simulated Blast Loading |
| 其他题名： | ANSI.2012.Standard for wood products:Structural glued laminated timber.ANSI A190.1.Tacoma,WA:ANSI/APA. |
| 正文语种： | 英文 |
| 作者： | D. N. Lacroix |
| 关键词： | Glulam;Columns;Flexural response;Blast loading;High strain rate;Dynamic increase factor;Shock tube;Axial load; Variable axial load; Composite resistance curve; Material model |
| 摘要： | An experimental program investigating the potential of fiber-reinforced polymers (FRPs) as a strengthening option for glulam beams subjected to simulated blast loads was undertaken. A total of four different retrofit configurations were investigated along with a fifth alternative for restoring previously damaged beams. Increases in resistance and maximum deflection in the range of 1.35-1.66 and 1.3-1.62, respectively, were obtained when FRP tension laminates with and without confinement were used. Partial-length and full-length confinement prevented premature debonding and significantly altered the failure mode from simple tension failure to a combination of brash tension and compression failure while limiting the damage to a small region. The results also showed that the addition of FRP contributed to an increase of 1.17 in the tensile failure strain relative to the unretrofitted beams. A material predictive model that accounts for strain-rate effects was developed using experimental stress-strain relationships determined from coupon tests. The proposed model compared well with resistance curves obtained from full-scale testing of glulam beam elements subjected to simulated blast loading. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N07024 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002084 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 07 |
| 页码： | 328-342 |
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