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在伸缩臂架的计算和塔身的计算中,经常遇到变截面立柱在受到顶面压力及分布轴压力作用下的弹性稳定问题。在这种情况下,临界压力该怎么计算,这往往是使设计者感到为难的问题。至今为止,一般设计计算的处理方法是把立柱根部轴力值作为计算压力,把立柱根部的截面特性作为整根柱的截面特性,然后按顶面受压的等截面立柱进行计算。较为准确一
In the calculation of telescopic boom and the calculation of the tower body, the elastic stability of the variable cross-section column under the pressure of the top surface and the pressure of the distributed shaft are often encountered. Under such circumstances, how to calculate the critical pressure is often a problem that makes designers feel embarrassed. So far, the general design calculation is to calculate the axial force of the column root as the calculated pressure, and take the cross-section characteristics of the root of the column as the cross-sectional characteristics of the entire column, and then calculate according to the equal cross-section column pressed on the top surface. More accurate one