Umbrellastructure was applied in USA transmission system of battlefield information, and that seamless connect and inter-operation between battlefields was realized via provided necessary frame.
美军的战场信息传输系统采用雨伞状结构，通过提供必要的框架来实现无缝连接和跨战场的互操作。
2
Thestructural system of umbrella elements is a new kind of composite structure merging architecture art and structure technology, and has good structural efficiency and comprehensive economic index.
Head structure defects of 7738 umbrella-type tower are presented after snow damage. Improvement methods are introduced and check-up calculation of load is made.