【摘要】 结合作者从事房屋增层设计和研究的经验，指出了房屋增层的优缺点和应注意的问题，结合工程实例介绍了几种典型增层结构型式。有些结构型式是作者首先提出并应用于实际工程设计的。更多还原

【Abstract】 This paper points out the merits,demerit s and problems to be noticed of building enlargement in flors with author’s expe ri ence.Integrating with engineering examples,some kinds of representative structur e types of enlargement in floors are given.Some of the structure types are prese nted firstly and applied to practical building design.更多还原