原文传递
Effect of Active versus Passive Confinement on Seismic Response of Wide RC Columns with Lap Splices
| 题名： | Effect of Active versus Passive Confinement on Seismic Response of Wide RC Columns with Lap Splices |
| 其他题名： | Aboutaha,R.S.,Engelhardt,M.D.,Jirsa,J.O.,and Kreger,M.E.(1999)."Experimental investigation of seismic repair of lap splice failures in damaged concrete columns."ACI Struct.J.,96(2),297–306. |
| 正文语种： | 英文 |
| 作者： | Mohamed H. Harajli |
| 关键词： | Active confinement;Anchor rods;Bond strength;Cyclic load;Earthquake;Seismic strengthening;Concrete and masonry structures |
| 摘要： | The results of an experimental study on seismic bond strengthening of spliced reinforcement in wide RC columns using external confinement are presented. Two types of confinement techniques were evaluated and compared, as follows: (1) a combination of external carbon fiber-reinforced polymer (CFRP) jacket and CFRP anchors, and (2) active confinement by means of pretensioned steel anchor rods. The effectiveness of the different strengthening techniques was evaluated by comparing with test results of companion as-built columns, and earthquake-designed columns which were detailed in accordance with the seismic provisions of a national building code. The columns were subjected to a quasi-static cyclic loading, simulating regions of high seismic hazard. In addition to the type of the strengthening system used, the test variables included area and diameter of the column longitudinal reinforcement. The as-built columns suffered bond and load degradation immediately after yielding of the spliced reinforcement. The actively confined specimens developed considerably larger lateral load, drift, and energy dissipation capacities than the as-built specimens, and performed better than the specimens strengthened using a combination of CFRP jacket and CFRP anchors, and even slightly better than the earthquake-designed specimens. A simple approach is presented for designing the strengthening systems required for effective bond strengthening. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N09014 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001196 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 09 |
| 页码： | 152-162 |
相关文献
- Influence of Lap Splices on the Deformation Capacity of RC Walls. II: Shell Element Simulation and Equivalent Uniaxial Model
- Exploratory Study of Seismic Response of Deficient Lap-Splice Columns Retrofitted with Near Surface-Mounted Basalt FRP Bars
- Cyclic Behavior of Lap Splices Strengthened with Ultrahigh Performance Fiber-Reinforced Concrete
- Effect of Confinement on the Axial Load Response of Ultrahigh-Strength Concrete Columns
- Influence of Lap Splices on the Deformation Capacity of RC Walls. I: Database Assembly, Recent Experimental Data, and Findings for Model Development
- Behavior of Circular Fiber-Reinforced Polymer–Steel-Confined Concrete Columns Subjected to Reversed Cyclic Loads: Experimental Studies and Finite-Element Analysis
检索历史
应用推荐
