原文传递
Time-Dependent Behavior of Recycled Aggregate Concrete–Filled Steel Tubular Columns
| 题名： | Time-Dependent Behavior of Recycled Aggregate Concrete–Filled Steel Tubular Columns |
| 其他题名： | ACI(American Concrete Institute)Committee 209R.(1992).Prediction of creep,shrinkage,and temperature effects in concrete structures,Farmington Hills,MI. |
| 正文语种： | 英文 |
| 作者： | Yue Geng |
| 关键词： | Steel-concrete composite structure;Concrete-filled steel tube;Recycled aggregate concrete;Creep;Time effect;Metal and composite structures |
| 摘要： | Recycled aggregate concrete–filled steel tube (RACFSTs) are attracting increasing attention from academics as a solution to use recycled aggregate concrete (RAC) as main load bearing members in multilevel or even high-rise buildings. Despite their promising future for structural use, limited attention has been devoted to investigate the time-dependent behavior of such elements. This paper reports on an investigation of how the incorporation of recycled aggregates (RAs) affects the long-term responses of these composite specimens. To achieve this, 21 RACFST specimens with different aggregate replacement ratios have been prepared for the long-term tests. The accuracy of currently available RAC concrete models in predicting the creep behavior of the RACFST specimens has been investigated based on the related experimental results. Replacing natural coarse aggregates with recycled aggregates can increase the long-term deformation of the composite columns by 22％ but barely affects the rate of creep development of the specimens. The observations from the research reported in this paper indicate that it is reasonable to account for such effects by multiplying an amplification factor to the available concrete models for normal composite specimens. Benchmarking analyses have shown that the available amplification factors proposed for RAC members can be used to predict the long-term responses of RACFST specimens by considering a nil exposed perimeter. Parametric analysis has been carried out to evaluate the time effects on the static responses of RACFST specimens. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N10023 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001241 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 10 |
| 页码： | 257-268 |
相关文献
- Experimental and Theoretical Studies of Hexagonal UHPC-Filled Double-Skin Steel Tubular Columns under Combined Compression and Bending
- Time-Dependent Buckling Analysis of Concrete-Filled Steel Tubular Arch with Interval Viscoelastic Effects
- Response and Modeling of Steel Tubes Filled with Recycled Fine and Coarse Aggregate Concretes under Long-Term Loading
- Experimental and Numerical Studies of Reinforced Concrete Columns Confined by Circular Steel Tubes Exposed to Fire
- Time-Dependent Behavior of Reinforced Concrete Columns Subjected to High Sustained Loads
- Investigation of Concrete-Filled Double-Skin Steel Tubular Columns with Ultrahigh-Strength Steel
检索历史
应用推荐
