问题描述:
在 SAP2000 中对节点指定节点样式时,节点的坐标值(x,y,z)是基于哪个坐标系和单位制加以确定的呢?
解答:
当用户对选中的节点指定节点样式时,SAP2000 将基于当前选择的坐标系和单位制确定节点的坐标值,并以此计算节点的样式值。所谓“当前选择”的坐标系和单位制,即:位于程序界面右下角的下拉列表中的选项,如下所示。
因此,即使对同一节点指定相同的节点样式(即:常数值 A,B,C,D 保持不变),如果当前的坐标系和单位制有所改变,最终的节点样式值也将随之改变。例如,对于用户自定义的坐标系统 CSYS1,如下:
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坐标原点为(1.0m,2.0m,3.0m)
-
坐标轴方向与全局坐标系(Global)一致
如果某节点在 Global 下的坐标值为(4.8m,0.0m,-0.8m),则对于节点样式(A=1,B=2,C=3,D=4),不同坐标系和单位制下的样式值如下表所示:
![](data:image/png;base64,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)
可以看出,如果错误地选择当前坐标系或单位制,实际的节点样式值与用户期望值的差别会非常大。综上,建议用户根据实际需求切换当前的坐标系或单位制,也可以适当调整常数值 A,B,C,D 的取值。
需要强调的是,节点样式值一旦完成指定,即使后续的坐标系或单位制发生改变,该节点样式值也不会自动地实时更新!这一点类似于平动类型的广义位移中平动自由度的系数值,更多内容请参阅本知识库的另一篇文档《广义位移的类型》。