预应力混凝土结构设计若干问题的探讨

Research on Several Design Issues of Prestressed Concrete Structure

对预应力混凝土用于建筑结构设计的一些问题进行了讨论,其中包括预应力筋在梁端的偏心锚固对柱顶受力影响、预应力筋张拉时是否需在后跨中布置后浇带、以及结构超长时在楼板内施加预应力的实际效用等。针对以上问题,进行理论分析,并通过工程算例进行验证,所得到的结论对指导预应力混凝土结构设计具有一定意义。

Several design issues of prestressed concrete used in building structures were presented,such as the influence on the column when the prestressed reinforcements were anchored in the beam ends with eccentricity,whether the post-pouring strips should be set in the back structures when prestressed reinforcements were stretched,and the effects of applying prestress technology to the slabs of super-long structures. Aimed at these issues,the author carried out the theory analysis,then verified the conclusions by engineering examples. The conclusions have certain significance of the prestressed concrete structure design.