大型电站锅炉钢结构基本周期探讨  

Discussion on the Fundamental Period of Boiler Structural Support Steel in Large Power Plant

作　　者：张永倩 张文元[2] 刘树新 孙洪鹏[1] ZHANG Yongqian;ZHANG Wenyuan;LIU Shuxin;SUN Hongpeng(Babcock&Wilcox Beijing Company Ltd.,Beijing 100043,China;School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]北京巴布科克·威尔科克斯有限公司,北京100043 [2]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《发电设备》2025年第2期85-89,125,共6页Power Equipment

摘　　要：根据美国规范ASCE/SEI7-22对结构基本周期的要求,分别采用传统的近似公式和基于STAAD.Pro软件的结构分析方法计算锅炉钢结构基本周期,并且对比了多个机组的锅炉钢结构基本周期。结果表明:针对悬吊式锅炉钢结构,采用近似公式法计算得到的基本周期偏短,采用STAAD.Pro软件计算得到的基本周期比采用近似公式得到的基本周期长;对于采用中心支撑框架体系、高度为70~100m、容量为300~1000MW等级的机组,其锅炉钢结构基本周期在2s左右,与采用1.4倍近似公式的计算结果相近;在初步设计阶段,可以采用1.4倍近似公式计算基本周期来进行大型电站锅炉钢结构的抗震设计,该方法不仅能够确保结构设计的安全性和合理性,还具有良好的经济效益。According to the requirements of the American specification ASCE/SEI 7-22 for the fundamental period of structure,the fundamental period of boiler structural support steel was calculated by traditional approximate formula and structural analysis method based on STAAD.Pro software,and the fundamental periods of boiler structural support steel of different units were compared.Results show that,for the structural support steel of suspended boiler,the fundamental period calculated by the approximate formula method is shorter,and the fundamental period calculated by the STAAD.Pro software is longer than that obtained by the approximate formula.The fundamental period of boiler structural support steel is about 2 s for units with center support frame system,height of 70-100 m and capacity of 300-1000 MW,which is similar to the calculation result of 1.4 times approximate formula.In the preliminary design stage,the 1.4 times approximate formula can be used to calculate the fundamental period for seismic design of large power plant boiler structural support steel.This method can not only ensure the safety and rationality of structural design,but also has good economic benefits.

关 键 词：锅炉钢结构 基本周期 近似公式 结构分析 

分 类 号：TM621.2[电气工程—电力系统及自动化]