潘  立  (中国建筑科学研究院建筑结构研究所，北京100013)

[摘要] 依据《混凝土结构设计规范》(GB50010 -2002)、《建筑抗震设计规范》(GB50011 -2001)和《预应力混凝土结构抗震设计规程》(JGJ140 -2004)的相关规定，对后张预应力混凝土框架梁刚接端截面受压区非预应力筋的最小与最大配筋率、受拉区预应力筋的构造最小配筋率进行了研究，推导了这些配筋限值的合理表达式，可供预应力混凝土结构设计与软件编程人员参考。
[关键词] 后张预应力；框架梁；截面受压（拉）区；配筋限值；配筋率

Research on limit amounts of reinforcement and prestressed tendon on the rigid support section of post-tensioned concrete frame beams
    Pan li
(Institute of Building Structures, China Academy of Building Research, Beijing 100013, China)

Abstract: Based on Code for Design Concrete Structures(GB50010 -2002),Code for Seismic Design of Buildings(GB50011 -
2001), and Specfication for Seismic Design Prestressed Concrete Structures(JGJ140 -2004), the minimum and the maximum ratio of reinforcement in pressed region, and the constructive minimum ratio of prestressed tendon in tensioned region on the rigid support section of post-tensioned concrete frame beams are researched, reasonable formulas of determining these limit values are deduced in detail, which can be used by the designer and the programmer for desigp of prestressed concrete structures.
Keywords: post-tensioned; concrete frame beams; pressed/tensioned region; limit amount of reinforcement; ratio of reinforcement