钢结构轴心受压实腹工字组合柱的设计,一般需经数次试算才能确定。因为初设长细比主要是凭经验,但一次很难设得较为合适,求山截面积 A 及翼缘宽 b 后,在决定 t、h、δ这三个数值时,既要保证局部稳定、构造合理,又要考虑降低造价,要想各方面都能充分合理,则要不止一次地调整。所以,设计出一个较为理想的截面,需较多的时间。对于经验不足者来说,尤其是这样。 The design of axial compression joints of steel structures with I-beams is generally determined by several trials. Because the initial slenderness ratio is mainly based on experience, it is difficult to set it at one time. After calculating the cross-sectional area A and the width b of the flange, when determining the three values ​​of t, h, and δ, it is necessary to ensure local stability. With reasonable structure, it is necessary to consider reducing the cost of construction. In order to ensure that all aspects are sufficiently reasonable, adjustments must be made more than once. Therefore, designing an ideal cross section requires more time. This is especially true for less experienced people.