水泥复合砂浆钢筋网二次受力加固RC偏压柱试验研究

Experimental Investigation on Strengthening of Eccentrically Compressed RC Column Using Composite Mortar Laminate Reinforced with Mesh Reinforcement Under Twice Loading

研制开发了工作性能良好的柱二次受力加固试验装置FBSH,用这一试验装置对4根近似足尺的偏压柱进行了用水泥复合砂浆钢筋网作二次受力加固的试验测试。将试验结果与同参数的未加固柱和一次受力加固柱进行了比较和分析,研究了一次受力应力水平指标对二次受力加固柱的承载力、延性、刚度以及开裂模式的影响规律,还分析了试验中的徐变现象。

The test setup FBSH of strengthening columns of twice loading,which possesses the excellent work function, was first developed in this research.Then four approximate full-size eccentric columns strengthened by composite mortar laminate reinforced with mesh reinforcement under twice loading were tested.The test results were compared and analyzed with the ones of the no strengthening and one-time-loading strengthening columns with the same test parameters.The regularity that the initial stress factor β affect the load-bearing capacity,the ductility,the stiffness, the cracking mode of the strengthening columns with twice loading were researched,and the creeping behavior of the test columns during test process was analyzed too.