对于只由杆件组成的开放结构,例如格构式塔架,荷载只作用在杆件截面上。
To apply area loads such as snow or wind to an open structure, select Load Wizards → Member Loads from Area load to create a new area load. Under the Geometry tab, select "Empty, on members only" for the Area of load application.
The area load can be displayed on individual members by right-clicking the load and selecting Display separately.