摘要
文章论述了预应力空心极过去的发展概况及近年来在引进、研究、应用高效节材钢材之下，预应力空心板的新发展以及将来如何利用高新技术成果推动预应力空心板技术达到一个更高水平．
This paper gives: (1 )a brief technical development of prestressed - concrete hollow floor in past years; (2 ) a mew technlcal development of prestressed - concrete hollow floors with the intro-duction, research and application of the high efficiency steel; (3 )how to use the advanced technique to improve the technology of prestressed - concrete hollow floors, and to push it to a higher level in the future.
