截面角部集中配筋RC柱抗震性能试验研究

Experimental study on seismic behavior of RC columns with corner focus longitudinal bars in section

地震动的随机性使地震时地面的水平运动可以来自任一方向,因此房屋的钢筋混凝土柱有可能在随机地震动下斜向受力而发生破坏。提出了将柱纵向钢筋向截面角部集中的方法以改善RC柱在斜向地震作用下的抗震性能,并通过低周往复试验进行了验证。结果表明:截面角部集中配筋柱在斜向地震作用下的抗震性能得到大幅度的提高。

Ground horizontal motions may come from any direction because of the randomness of the ground motions,which may make the reinforced concrete( RC) columns damaged under the biaxial loadings. The method of focuing longitudinal bars on corner in the section was present in the paper to improve the seismic behavior of RC columns,and was verified by the low cycle reciprocal loading test. The test results indicate that the seismic behavior of RC columns with corner focus longitudinal bars in section can be improved greatly.