顾名思义, the double WT connection uses two WT sections to create a moment connection. Both WT sections are mounted on the top and bottom flanges of the child member.
设计
A double WT connection is considered to be one of the cheaper alternatives to the 直通板连接 和 Collared Plate Connection as it only requires extra bolting or welding for the WT sections to the HSS column.
最佳实践
- The double WT connection can be prone to high prying loads on the welds of the HSS column, therefore it is better to over design the welds use
- The depth of the WT flange should not be wider than the flange of the child member.
- The web flange of the WT shape should not extend too long to prevent a higher moment load acting on the welds
