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GFRP-Retrofitted Reinforced Concrete Columns Subjected to Simulated Blast Loading
| 题名： | GFRP-Retrofitted Reinforced Concrete Columns Subjected to Simulated Blast Loading |
| 其他题名： | Abdelnaby,A.E.,and Elnashai,A.S.(2012)."Response of degrading reinforced concrete systems subjected to replicate earthquake ground motions."Proc.,15th World Conf.on Earthquake Engineering,Sociedade Portuguesa de Engenharia Sísmica,Lisbon,Portugal. |
| 正文语种： | 英文 |
| 作者： | Eric Jacques |
| 关键词： | relationship；column；gfrp；loading；predict；blast；bonding；protection；deform；subject |
| 摘要： | This paper presents experimental results of one as-built and three glass-fiber-reinforced polymer (GFRP)-retrofitted reinforced concrete columns subjected to simulated blast loading. Retrofitting involved various configurations of longitudinal and transverse GFRP layers to enhance flexural and shear capacity. The objective was to study the performance and level of protection of the retrofitted columns to mitigate blast effects. The results demonstrated that retrofitting can significantly increase the strength and stiffness of reinforced concrete flexural members and greatly improve blast response. Furthermore, the addition of transverse GFRP wraps can lead to enhancements in the debonding strain and behavior of longitudinal GFRP, as well as an increase in postpeak ductility of concrete. A complementary analytical study based on the single-degree-of-freedom (SDOF) dynamic analysis method was conducted to predict the displacement response of the columns. The load–deformation relationships of the columns were computed using a lumped inelasticity analytical model. In addition, modifications to a standard degrading stiffness hysteretic model were proposed to account for accumulated damage due to repeated testing. Satisfactory agreement between the SDOF-predicted and experimentally recorded maximum displacements, time to maximum displacements, and residual displacements were obtained. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N11013 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001251 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 11 |
| 页码： | 128-140 |
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