钢筋混凝土柱绕丝加固的试验研究

Experimental exterior spiral reinforcement research on method for reinforced concrete column

通过绕丝加固钢筋混凝土柱的试验,研究加固后的钢筋混凝土柱的工作性能,分析了柱体在荷载作用下,纵筋、混凝土、体外绕丝各自的受力性能,比较了不同的绕丝间距及加载偏心距对加固柱性能的影响,着重分析了绕丝法对柱的极限承载力和延性的影响。

Based on tests,the properties of the reinforced concrete columns with a rectangular cross section which were strengthened outside by using spiral hoops are studied.And the research places on the respective behavior of the columns made of steel bar, the concrete and the exterior spiral reinforcement under vertical loads.Meanwhile the effects of the reinforcement capacities under different spiral distances and eccentricities were compared.The effects of the exterior spiral reinforcement method on the columns,ultimate load beating capacities and the ductility are analyzed.