某烟囱改造工程的结构加固设计与分析  

Structural Consolidation Design and Analysis of a Reconstructed Chimney

作　　者：杨晖柱[1] 何天森[1] 丁洁民[1] 巢斯[1] 

机构地区：[1]同济大学建筑设计研究院,上海200092

出　　处：《特种结构》2008年第2期87-89,92,共4页Special Structures

摘　　要：某火电厂烟囱为165m高的钢筋混凝土圆筒结构,已经持续使用了23年,拟改造成一座观光塔:在原烟囱顶上增设钢结构格构柱和空间桁架,总高度增加到196m。在高度方向,绕烟囱外壁设置四条平行的螺旋形钢结构管桁架,并沿其弦杆安装观光小车的轨道。针对改建结构设计了加厚筒壁和增设筒内钢框架体系这两种加固方案,并对加固后的结构进行了静力和动力性能分析与比较。分析结果表明,两种方案的结构性能均能满足主要的加固要求。The chimney of a fire-electricity power plant is a 165m high concrete tube structure, and the chimney has been working for 23 years. The chimney will be consolidated and reconstructed into a sight-seeing tower： steel trellis columns and space trusses are added on the top of the chimney, thus reaching 196m height ; along height direction ,four parallel spiral steel trusses are arranged on the outer side of the chimney, and the tracks of sight-seeing chambers are installed along the truss chords. Two consolidation schemes are designed for the reconstructed structure： increment of the tube wall thickness and addition of inner steel frame system. Static and dynamic behaviors of the structure consolidated with the two different schemes are analyzed and compared. Analysis results show that the structural performance of the two schemes can meet the primary consolidation requirements.

关 键 词：高耸结构 烟囱 加固 改造 设计和分析 

分 类 号：TU347[建筑科学—结构工程]