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计算钢筋混凝土偏心受压构件应考虑挠曲对承载能力的影响,考虑的方法是将偏心距e_0乘以大于1的纵向力偏心距增大系数η。按我国过去规范BJG21-66计算偏心距增大系数η,在某些范围内(例如,混凝土标号较低,配筋较少,细长比不很大时)与试验结果较符合,但在另一些范围内,则与试验结果出入较大,例如:对配筋率较高而混凝土标号较低的柱,η计算值偏大;对配筋率较低而混凝土标号较高的柱,η计算值
The calculation of the influence of the deflection on the load-carrying capacity of the reinforced concrete eccentric compressive member should be taken into account. The eccentricity distance e_0 is multiplied by a longitudinal force eccentricity increase coefficient η greater than 1. Calculate the eccentricity increase coefficient η according to our country’s past specification BJG21-66, in some areas (for example, the concrete number is lower, the reinforcement is less, the slenderness ratio is not very large) is more consistent with the test results, but in another In some areas, the results are quite different from the test results. For example, the calculated value of η is higher for columns with higher reinforcement ratio and lower concrete number; for columns with lower reinforcement ratio and higher concrete number, η is calculated. value