The portal frame is a traditional structural system. The upper main frame of the structure includes a rigid frame beam, a rigid frame column, a support, a stringer, a tie rod, a gable skeleton and the like. The steel frame of the portal frame light house has the characteristics of simple force, clear Transmission path, quick component production, easy factory processing and short construction period. Therefore, it is widely used in industrial and commercial buildings such as industrial, commercial and cultural entertainment public facilities. in. The steel structure of the portal frame light house originated in the United States. After nearly a hundred years of development, it has become a structural system with relatively perfect design, production and construction standards.
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