张凤文     （燕山大学建工学院  秦皇岛 066000）

    刘锡良    （天津大学建工学院 300072）

[提要]  介绍了开合屋盖建筑的现状和发展趋势，在此基础上着重就这种结构的难点问题——行走机构问题进行了专门的研究，从行走机构的约束及自由度入手，根据轮轨连接的方式对行走机构进行了分类，提出了各种行走方案的选用原则和适用范围，并利用大量的工程实例加以说明。研究成果对实际开合屋盖建筑中行走机构设计具有直接的指导意义。
[关键词]  开合屋盖结构  现状  发展  行走机构  约束  自由度  分类

After summarizing the state of the art about retractable roof structure,scheme of moving mechanism is analyzed and researched in detail,which is one of the most difficult sections in realization of the structures. After analyzing the constraint condition and degree of freedom of the moving mechanisms, they are classified according to manners of wheelrail relationships. Design principle and application scope of different mechanism scheme are put forward, which are elaborated with many examples of practical projects. The results can be used directly for reference in future design.
Keywords:  retractable roof structure; moving mechanism; constraint condition; freedom degree; classification