通过对全预应力、部分预应力、普通钢筋砼梁弯距—挠度关系曲线的比较分析,指出了部分预应力砼梁的诸多优点,可以在施工实践中予以借鉴. By comparing and analyzing the curves of total prestressing, partial prestressing and bending-deflection of common reinforced concrete beams, some advantages of the partially prestressed concrete beams are pointed out, which can be used for reference in construction practice.