Inner ring beam steel component for inwards-concave top cover structure

The utility model belongs to the technical field of steel structure accessory application and particularly discloses an inner ring beam steel component for an inwards-concave top cover steel structure. The inner ring beam steel component comprises a round supporting body, first supporting plate connecting brackets evenly arranged on the round supporting body, supporting plates with one ends connected with the first supporting plate connecting brackets, second supporting connecting brackets arranged on cylindrical supporting pillars and connected with the other ends of the supporting plates, and straining beam connecting brackets evenly arranged on the cylindrical supporting pillars. The inner ring beam steel component is simple in structure and accurate and convenient to assemble; a steel pipe section is adopted in the inner ring beam steel component, the cylindrical supporting pillars are connected with straining beams through the straining beam connecting brackets, the inner sides of the cylindrical supporting pillars are connected with the round supporting body through the supporting plates, and the whole structure is supported; the whole inner ring beam steel component is in a fold line circular ring shape, steel pipe sections are adopted in the cylindrical supporting pillars, the maximum diameter is 1000 mm, the maximum wall thickness is 40 mm, high-rise steel Q390GJC is adopted as steel, the supporting and loading capacity is large, and stability is achieved.