用于陕西宝鸡第二发电厂 1期工程的 2 4 0m高砖内筒双管式钢筋混凝土烟囱是我国首座自行设计和施工的、适合我国国情和国际烟囱设计发展状况的新型结构烟囱 ,是一次烟囱设计技术革新的有益尝试。本文通过对比分析和论述 ,对砖内筒双管式烟囱在结构体系选择、结构设计特点和结构计算原则等方面作了深入细致的探讨 ,提出了建设性的意见 The 240-meter-high double-pipe reinforced concrete chimney used for Phase 1 of Baoji No.2 Power Station in Shaanxi is the first structural chimney to be designed and constructed in China and suitable for the development of China’s national conditions and international chimney design. Chimney design technology innovation beneficial attempt. In this paper, through comparative analysis and exposition, we make a thorough and meticulous discussion on the selection of structural system, structural design features and structural calculation principles of double-tube brick chimneys, and put forward constructive suggestions