郑文忠  解恒燕  郑  弦  潘景龙
    （哈尔滨工业大学土木工程学院  150090）

[提要]  介绍了大兴安岭森林防火指挥部两种抽柱改造方案的设计思想及有关构造做法，分析了两种方案在结构性能、施工难易程度、施工工作量、质量保证等方面的特点，指出了在选定方案后施工过程中应注意的问题，为同类工程的抽柱改造设计提供了参考。
[关键词]  框架结构  抽柱改造  设计方案  构造

Reconstruction project of demolishing columns is one of the main means of reconstructing building function. The design idea and relevant constructions of two reconstruction schemes of Daxing'anling Forest Fire Protection Headquarters with demolishing columns are introduced, and characteristic of the schemes in structural performance, various degrees of construction difficulty, amount of work and quality of construction etc,are analyzed too. The problems at construction process are pointed out after making choice from the schemes,which will be referred to the design of similar reconstruction project.
Keywords: concrete frame; demolishing columns; design scheme; construction