水泥窑尾预热器钢塔架优化设计研究

水泥窑尾预热器塔架是新型干法水泥生产线中的重要构筑物,塔架的结构设计一般参照高层民用建筑进行,但由于荷载条件不同、结构布置受到工艺要求和设备安装限制,塔架在结构布置及性能等方面有一定特殊性。通过对采用钢框架-支撑体系的某水泥窑窑尾预热器塔架进行优化设计,在多方案比选基础上,结合工艺要求,确定了调整钢柱布置减小钢梁跨度、采用方钢管柱和方钢管混凝土柱代替H型钢柱的优化设计方案,塔架主体钢结构用钢量降低约25%。同时研究了窑尾塔架结构的受力特点。

OPTIMUM DESIGN RESEARCH ON STEEL FRAME PRE-HEATER TOWER OF CEMENT KILN

Pre-heater tower is an important structure of the new-style dry process cement production line.The pre-heater tower structure is often designed according to related codes for civil high-rise buildings.Due to special load condition,technical requirements and equipment layout,the tower frame structure has restricted structural layout and different structural performance.In this paper,a 5000TPD double series cement kiln was taken as a case study and the structure design of its braced steel frame pre-heater tower was optimized.Based on scheme comparison and the technical requirements,the optimum design scheme was determined to be re-arrangement of columns to reduce the beam span and replacing H-shape steel columns by rectangular hollow section columns or concrete-filled ones.About 25% of the total amount of steel was saved by the optimum design.In addition,the structural characteristics of the steel frame pre-heater tower were studied.