何  维
    （机械工业部设计研究院  北京 100081）

[提要]  介绍了润安大厦楼板采用无粘结预应力技术的设计、特殊部位的处理以及经济效益情况。
[关键词]  高层建筑 无粘结预应力  经济效益

This paper introduces the design of unbonded prestressed concrete slabs used in Runan Building.  The special disposal of particular part and economic benefit of this technology are also presented.
Keywords:  tall building; unbonded prestressed concrete; economic benefit