liuhaitao wrote:
请问staad/pro可以计算空间结构的自振周期吗?怎样计算?我现在正在自学这个软件。希望能得到大家的帮助。谢先了!
staad能算结构的自振周期,可以用命令,当结构中添加地震荷载时软件也会算出结构自振周期。
命令CALCULATE NATURAL (FREQUENCY) 用于计算此命令之前的荷载工况在相应于变形方向上的结构的自振频率。在一组荷载的作用下结构将产生位移。程序中将这一位移作为振型,并计算出与该振型所对应的结构自振频率。
计算结构在staad的输出结果中给出
下面的是我的一个简单模型中的结果
CALCULATED FREQUENCIES FOR LOAD CASE 2
MODE FREQUENCY(CYCLES/SEC) PERIOD(SEC) ACCURACY
1 1.795 0.55701 4.467E-16
2 2.201 0.45428 0.000E+00
3 2.339 0.42761 5.266E-16
4 3.204 0.31211 2.074E-12
5 3.375 0.29627 9.343E-11
6 4.420 0.22625 5.864E-07
STAAD SPACE -- PAGE NO. 20
The following Frequencies are estimates that were calculated. These are for
information only and will not be used. Remaining values are either above
the cut off mode/freq values or are of low accuracy. To use these
frequencies, rerun with a higher cutoff mode (or mode + freq) value.
CALCULATED FREQUENCIES FOR LOAD CASE 2
MODE FREQUENCY(CYCLES/SEC) PERIOD(SEC) ACCURACY
7 4.463 0.22407 4.513E-06
8 4.751 0.21049 2.824E-05
9 4.928 0.20293 1.223E-05