体外预应力混凝土梁极限状态下体外筋极限应力确定  

Calculation of the External Tendons's Ultimate Stress at Ultimate Status on Externally Prestressed Concrete Beams

作　　者：杨庆年[1] 熊辉霞[1] 

机构地区：[1]南阳理工学院土木工程系,河南南阳473004

出　　处：《工程建设与设计》2006年第11期14-16,共3页Construction & Design for Engineering

摘　　要：通过对国内外关于无黏结预应力混凝土结构极限状态下预应力筋极限应力计算公式的探讨,指出对体外预应力混凝土结构体外筋极限应力运用体内无黏结筋的计算方法来确定有一定偏差,体外预应力筋极限应力在设计中如何准确确定应进一步研究探讨。Based on the discuss of ultimate stress formula of the presstressing tendons in unbond prestressed concrete structures at ultimate status around the world, this paper point out that using the inner prestressing tendon formulas to calculate the ultimate external prestress in unbonded pretress concrete structures is not accurate. How to calculate the external ultimate prestress in design should be lucubrated.

关 键 词：体外预应力 体外筋 应力增量 极限应力 

分 类 号：TU311[建筑科学—结构工程] TU378.2