摘要
对1根未加固钢筋混凝土梁和5根体外预应力加固混凝土梁进行了受弯性能的试验研究,采用加载至梁产生0.1 mm宽最大裂缝再加固、加载至弯曲裂缝接近规范控制值加固以及先加固再加载这三种加固程序,对比了普通低松弛钢绞线和无粘结低松弛钢绞线这两种体外筋类型以及不同的配筋率对加固效果的影响,得出了一些有益的结论。
The paper tests and studies the bending performance of 1 steel concrete beam without being reinforced and 5 external prestress reinfor-cing concrete beam, and adopts three kinds of reinforcing procedures, such as loading up to beam and producing 0.1 mm maximum cracks and reinforcement, loading and bending cracks to controlled value and reinforcement, and reinforcing ＋ loading, and finally compares the two types of external reinforcement including common stress-relieved strand and low-relaxation strand and the impact of different reinforcing ratio upon rein-forcement effect. In the end, it draws some beneficial conclusions.
出处
《山西建筑》
2013年第33期34-37,共4页
Shanxi Architecture
关键词
外预应力
二次效应
加固
试验研究
external prestress, secondary effect, reinforce, experimental research
