刘一威
    （深圳市清华苑建筑设计有限公司，深圳 518052）

[摘要] 探讨的耐震楼梯为装配式轻钢结构，经特殊设计的构件连接节点为结构提供了耐震性能。为了最大限度地减少楼梯自身刚度对整体结构动力特性的不利影响，每个构件在三维空间的有关自由度方向上均放松了多余约束，同时保留稳定的承载能力，这也彻底地改善了楼梯本身在地震时的工作环境。本项改革综合效益显著。
[关键词] 耐震设计；自由度；放松多余约束
中图分类号：TU352.1    文献标识码：A  文章编号：1002-848X(2011) Sl-0305-03

Exploration for structure of shock-bearing stairs
    Liu Yiwei
    ( Tsinghua-Yuan Architectural Design Ltd.,  Shenzhen 518052,  China)

Abstract: The shock-bearing stairs mentioned here is fabricated lightweight steel construction, and some joints designed specially linking structural members can offer shock-bearing properties to the stairs structure. To reduce the harmful influence of dynanuc properties on the whole structure by rigidity of stairs into full play, the unnecessary confinement of degrees of freedom was relaxed in the three dimensions for every members. Simultaneously stable load-bearing capacity was retained, and the working conditions of stairs itself were improved entirely during earhquake. The comprehensive benefit of this reformation is remarkable.
Keywords: shock-bearing design; degree of freedom; relax unnecessary confmement