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以重庆某3×220MW发电机组工程烟囱结构(三管玻璃钢内筒+钢筋混凝土外筒形式)为例,内筒采用分段支承,其承重平台由3根主钢梁承担,主梁一端支承在钢筋混凝土外筒壁上,另一端在内筒处形成一个三角形铰接支座,制晃装置悬挂于各层承重平台下.通过该结构布置方案,达到减小外筒出口直径、节约平台钢梁用量、方便平台施工吊装的目的.由此工程实例推广介绍此类套筒式烟囱外筒设计要点,内筒各层制晃装置、承重平台和内筒结构的合理布置形式,施工吊装考虑以及玻璃钢内筒设计的特点和注意事项,进而促进玻璃钢材料在烟囱及其他工业建筑中的应用和推广.
Taking the chimney structure of a 3 × 220MW generating unit in Chongqing (three-tube FRP inner tube + reinforced concrete outer tube form) as an example, the inner tube is supported by sections, and the load-bearing platform is borne by three main steel beams. One end of the main beam is supported by Reinforced concrete outer wall, the other end of the inner cylinder at the formation of a triangular hinge bearing, shaking device hanging in the layers of the load-bearing platform through the arrangement of the structure to reduce the diameter of the outer cylinder outlet to save the amount of steel beams platform , To facilitate the construction platform hoisting purposes.This engineering case to promote the introduction of such sleeve chimney outer tube design points, inner cylinder layers of shaking device, load-bearing platform and the inner tube structure of the rational layout, construction hoisting considerations and inside the glass Cylinder design features and precautions, thereby promoting the FRP materials in the chimney and other industrial buildings in the application and promotion.