|
| 摘要: |
| 进行了不同配筋率下的钢纤维自应力混凝土1～28d限制膨胀变形的测量试验，研究了钢纤维自应力混凝土的限制膨胀变形随龄期变化规律，提出了限制变形与钢筋配筋率的指数关系以及钢筋与钢纤维共同作用时的混凝土变形规律。同时，由限制变形规律，根据截面平衡条件，提出了配筋钢纤维自应力混凝土的自应力计算模式。 |
| 关键词: 自应力 钢纤维混凝土 膨胀变形 配筋率 龄期 |
| DOI： |
| 分类号:TU528.572 |
| 基金项目:国家自然科学基金资助项目(598790001) |
|
| Expansive Characteristics and Self-stress Value of Self-stressing Concrete Reinforced with Steel Bar and Steel Fiber |
|
HE Hua-nan HUANG Cheng-kui
|
| Abstract: |
| Based on the measuring results of expansive deformation of self-stressing concrete reinforced with various ratios of reinforcement as well as steel fiber volume fractions at the ages from 1 day to 28 days, the different phases of expansive deformation with the age were investigated. The combined effects of steel bars and steel fiber are analyzed and the exponential relation between steel ratios of reinforcement and the restrained expansive deformation is proposed. Further, according to the relation between expansion and steel reinforcing ratios, the model for steel fiber reinforced self-stressing concrete restrained by steel bars is suggested. |
| Key words: self-stressing,steel fiber,expansive deformation,steel ratio of reinforcement |
