（中国建筑西南设计研究院有限公司， 成都 610081）

［摘要］国标图集《现浇混凝土板式楼梯》（15G307）增加了设置滑动支座的楼梯形式，用于框架结构及框架剪力墙结构中框架部分的楼梯设计，可有效消除楼梯的斜撑作用对结构的影响，结构抗震设计简单，施工方便，建造成本较低。对设置滑动支座板式楼梯的编制背景、编制依据、适用范围、布置方式及其对主体结构影响、楼梯构件设计的关键问题及处理方式进行了讨论和说明，对梁式楼梯的滑动设计也提出了相关建议，以便设计和施工人员能够合理、有效地使用图集。

［关键词］板式楼梯； 滑动支座； 斜撑作用； 梁式楼梯

中图分类号：TU318-4， TU375文献标识码：A文章编号：1002-848X(2017)19-0108-06

Revision introduction of staircase with sliding supports in drawings of Cast-in-Place Reinforced Concrete Plate Stairs (15G307)

Wu Xiaobin, Lei Yun, Feng Yuan, Chen Wenming, Wang Fei

(China Southwest Architectural Design and Research Institute Co.,  Ltd.,  Chengdu 610081, China)

Abstract:The staircases with sliding supports are added to the drawings of Cast-in-Place Reinforced Concrete Plate Stairs (15G307). Those plate stairs with sliding supports can be used in the staircase design of frame in frame structure or frame-shearwall structure, which can eliminate the bracing effect of the stairs on the structure. By using the plate stairs with sliding supports, the seismic design is easier, the construction is convenient and the cost is lower. The compilation background and the basis, the scope of application, the arrangement and its influence on the main structure, the key problems and treatment of the design of the staircase components were discussed and illustrated. The relevant recommendations were also put forward for sliding design of the beam stairs, which an help the design and construction personnel  use drawings reasonably and effectively.

Keywords:plate stair; sliding support; bracing effect; beam stair

作者简介：吴小宾，硕士，教授级高级工程师，Email: wumat@vip.sina.com。