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本文推导了钢管混凝土单阶、二阶组合柱在风载、不定位水中集中荷载、弯矩作用下以及在这三种荷载共同作用下的上柱影响系数.在比较、分析这些上柱影响系数的基础上给出了上柱柱长与组合柱柱长比及上、下柱刚度比的合理设计范围,并对荷载对组合柱上柱影响系数的影响及上柱影响系数与刚度折减系数的关系进行了分析、讨论.
In this paper, the influence coefficient of the upper column of the single-stage and the second-order combined column of concrete-filled steel tube under wind loading, non-locating water concentrative loading, bending moment and under these three loads are deduced. The influence coefficients of these upper columns are compared and analyzed. Based on the above, the reasonable design range of the ratio of the length of the upper column to the length of the combined column and the ratio of the upper column to the lower column is given, and the influence of the load on the column influence coefficient of the combined column and the coefficient of the upper column influence and the stiffness reduction factor are given. The relationship was analyzed and discussed.