CFRP加固钢筋混凝土短柱的试验研究

主要进行了素混凝土方形短柱、钢筋混凝土方形短柱CFRP加固后的力学性能试验研究。试验表明,外包CFRP可以大幅度提高素混凝土柱的轴心抗压承载力,但在不同程度上降低了延性。提高幅度会随着外包面积比例的增加而提高很显著,全包时甚至达到36%。而CFRP加固钢筋混凝土柱也能提高其轴向抗压承载力,但提高幅度远不如对素混凝土柱的提高幅度。

ANALYSIS ON THE TEST OF THE REINFORCED CONCRETE COLUMNS WRAPPED WITH CFRP

There are square-section plain concrete columns,square-section reinforced concrete columns respectively experienced loading test for axial compression performance of column wrapped with CFRP. The test results indicate that axial compression capacity of plain concrete columns increase largely when wrapped with CFRP. The maximum increment of axial compression capacity is 36% when square-section plain concrete columns arc completely wrapped with CFRP. Although wrapping CFRP can also increase axial compression capacity of square-section reinforced concrete columns, the increment seems much smaller than that of plain concrete columns.