Abstract: The roof structure of huge main pipe truss + second plane truss was used in final phase /flight line hangarin Tianjin Airbus A320 project． A high-strength bolt-plate connection in the main pipe truss was firstly used at home．In this paper，the mechanical features of the structure were analyzed; the design of high-strength bolt-plateconnections in pipe truss was introduced in detail． The design and construction of this hangar demonstrates that themechanical features were simple and definite for the main-second truss system，the construction of the high-strengthbolt plate connections in pipe truss is simple，which can shorten the construction time．