崔  博    （北京市建筑工程研究院  100039）

    王  冰   （太原建筑设计院）

[提要]  介绍了屋顶游泳池底板采用预应力斜交井字梁结构的方案设计。结合施工的可行性，给出预应力梁的布置方案和节点作法，并利用有限元方法对结构正常使用阶段及施工阶段内力情况进行了分析。
[关键词]  井字梁  预应力  张拉  节点

Several schemes of the reinforced concrete cross-beams were adopted and compared in the loottom plane design of a top floor indoor swimming pool. The distribution characteristics of the cross-beams as well as the prestressed concrete reinforcements were discussed in detail which has highly value for reference on similar cases. In addition, the analysis expanded solved the tough issues well in large-space and heavy-loaded structure designs.
Keywords: cross-beams; prestressed; joint;  indoor swimming pool