摘要
计算UPPC梁(板)的抗弯强度,关键是确定构件在极限承裁能力时无粘结预应力筋的极限应力值。在UPPC梁的设计中,应根据结构的断面形式、受力状态采用不同的计算方法加以比较,以增加UPPC结构设计的准确性及合理性。同时建议结合现行“公桥规”中对有粘结预应力混凝土结构的计算原理与方法较全面、系统地研究UPPC梁桥的设计原理,并给出相应的实用计算方法和公式,从而为UPPC桥梁设计和“公桥规”的完善提供有价值的参考。
The key of calculating flexure strength of UPPC beam is to determine unbounded prestressed tendon's ultimate value when the components are under their ultimate load ability. We should compare different calculation methods according to the section form, force - bearing status in design of UPPC beam to improve design' s veracity and rationality. It also suggests that we should study the design theory of bridge with UPPC beam combining with the calculation theory and method of bounded prestressed concrete structure in current road and bridge criterion. Relevant practical calculation method and formula are given in this paper to provide valuable reference for design of bridge with UPPC beam and improving road and bridge criterion.
出处
《林业科技情报》
2003年第4期65-66,68,共3页
Forestry Science and Technology Information
关键词
无粘结
部分预应力混凝土
极限状态
unbounded
partial prestressed concrete
ultimate status
