| 负载下碳纤维布约束混凝土圆柱的轴压试验研究 |
| |
| 引用本文： | 潘毅,曹双寅,敬登虎,陈德宝.负载下碳纤维布约束混凝土圆柱的轴压试验研究[J].工程抗震与加固改造,2008,30(2):68-72. |
| |
| 作者姓名： | 潘毅 曹双寅 敬登虎 陈德宝 |
| |
| 作者单位： | 1. 东南大学,土木工程学院,江苏,南京,210096;西南交通大学,土木工程学院,四川,成都,610031
2. 东南大学,土木工程学院,江苏,南京,210096 |
| |
| 摘 要： | 通过32个碳纤维布约束混凝土圆柱的轴压试验,研究了圆柱在不同的负载水平、混凝土强度和碳纤维包裹层数下的破坏特征和力学性能,并对负载导致约束混凝土峰值点应力和应变下降的原因进行了分析。试验结果表明,负载水平的大小对于碳纤维布的约束效果是有明显影响的。随着负载水平的提高,第二阶段刚度、峰值点应力和应变均逐渐下降;而碳纤维包裹层数的增加,则放大了这种效应。
|
| 关 键 词： | 碳纤维布 混凝土圆柱 负载水平 峰值点应力 峰值点应变 |
Experimental Research on Axially Loaded Circular Concrete Columns Confined by CFRP under Preload |
| |
| Pan Yi,Cao Shuang-yin,Jing Deng-hu,Chen De-bao.Experimental Research on Axially Loaded Circular Concrete Columns Confined by CFRP under Preload[J].Earthquake Resistant Engineering and Retrofitting,2008,30(2):68-72. |
| |
| Authors: | Pan Yi Cao Shuang-yin Jing Deng-hu Chen De-bao |
| |
| Abstract: | A total of 32 circular-section concrete columns confined by CFRP sheet were tested in uniaxial compression involved in different preload ratio,concrete strength and CFRP plies.The failure characteristic and mechanics behavior of confined concrete columns were presented,and the descending of the peak stress and strain of confined concrete due to preload were analyzed.The experimental results indicated that the confinement effect of CFRP was influenced by preload ratio observably.The second stiffness,the peak stress and strain declined with preload ratio ascending,and the extent developed with the enhancement of CFRP ply. |
| |
| Keywords: | carbon fiber reinforced plastic(CFRP) sheet circular-section concrete columns preload ratio peak stress peak strain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
