无粘结预应力混凝土连续梁的分析原理  

Analysis Theory of Unbonded Prestressed Concrete Continuous Beams

作　　者：简斌[1] 刘宜丰[2] 

机构地区：[1]重庆建筑大学建筑工程学院,重庆400045 [2]中国建筑西南设计研究院,四川成都610081

出　　处：《重庆建筑大学学报》2000年第1期5-10,共6页Journal of Chongqing Jianzhu University

摘　　要：采用能量法对无粘结预应力混凝土连续梁中次弯矩是否变化的问题进行了深入的研究,并与有粘结预应力连续梁进行对比。研究结果表明,在用增量法解无粘结预应力连续梁时,可以不必考虑初始次弯矩是否变化的问题,而将其作为一不变的量对待。而总的次弯矩却是变化的,这是因为无粘结梁中预应力筋应力增长引起了等效荷载的改变。In this paper, the energy method has been used to study the change of the secondary moment of unbonded prestressed concrete continuous beams and it has been contrasted with bonded prestressed beams. The question, whether the secondary moment changes or not while loading, was answered. It shows that the primary secondary moment does not change when increment method is adopted to study the beams, but the total secondary moment will change while the force in prestressed reinforcement changes.

关 键 词：无粘结预应力 连续梁 次弯矩 混凝土连续梁 

分 类 号：TU378.201[建筑科学—结构工程]