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为了利用非线性推覆分析(Push-over)方法分析型钢偏心对型钢混凝土(SRC)柱承载力的影响,建立了SRC柱的Push-over分析模型,进行了偏心SRC柱的偏心受压试验和Push-over计算,验证了Push-over方法用于SRC柱分析的可靠性,并用Push-over方法分析了当SRC柱的长度和荷载作用位置等参数变化时,随着型钢偏心距的不同,SRC柱受力性能的变化情况,找出了型钢偏心对整柱承载力影响的变化规律.分析结果表明:当荷载和型钢同时偏心在截面形心轴的同一侧时,荷载偏心距较小的SRC柱的承载力随着型钢偏心位置的增大而减少,荷载偏心距较大的SRC柱的承载力随着型钢偏心位置的增加而略有增加;当荷载和型钢偏心在截面形心轴的两侧时,无论荷载偏心距的大小,SRC柱的承载力随着型钢偏心位置的增加而增加,但其变化幅度不大.
In order to analyze the influence of profile eccentricity on the bearing capacity of SRC columns by using the non-linear Push-over method, a Push-over analysis model of SRC columns was established and the eccentric compression test of eccentric SRC columns was carried out. Push-over calculation, the reliability of the Push-over method for SRC column analysis is verified, and the Push-over method is used to analyze the SRC column length and load changes when the parameters such as location changes, with the different profile eccentricity, SRC The results show that when load and shape steel are eccentric on the same side of the mandrel, the SRC with small load eccentricity The bearing capacity of the column decreases with the increase of the eccentric position of the section steel. The bearing capacity of the SRC column with large load eccentricity increases slightly with the increase of the eccentric position of the section steel. When the load and the eccentricity of the section steel in the two Side, regardless of the size of the load eccentricity, SRC column bearing capacity increases with the eccentric position of the section increases, but the change range is not large.