关键词: 仓顶结构, 组装施工, 中心柱, 钢桁架, 平台支撑体系

Abstract: Abstract:In recent years, the number of reinforced concrete silos undertaken has increased, the silo diameter and model have increased, and the reserves have increased, but the construction of the silo roof structure is the difficulty and key link of the silo project. At present, the construction support system of silo roof structure mainly includes central scaffold + fixed-length truss, lattice central column + fixed-length truss, lattice central column + Bailey frame and other support types, the construction methods are diverse, and the silo support system of different diameters is different, which can not be used universally, and the economy is poor. A kind of prefabricated silo roof support platform was designed, which can be suitable for the support system of the construction of various silo type silo roof structures. Through the construction and application of the 1# and 2# product silo group projects in the first bid section of the Jisan Si Hekou Port Coal Storage and Blending Base Project of Yankuang Energy Jisan Coal Mine, it is confirmed that the structure of the support system is simple, and the platform truss meets the needs of the construction of silo roof structures of different diameters by splicing the standard sections into platform trusses of different lengths. The central column adopts a segmented design, with socket butting and bolt connection, and the standard section is spliced into the central column of different heights to meet the needs of the construction of the silo roof structure at different heights. The system adopts the assembly type, which has the characteristics of light total weight, turnover, high safety, fast construction and high economy, and improves the competitive advantage of enterprises in the construction of silo projects.