Long-term deformation of prestressed concrete beams

被引：0
|
作者：
Xu, Jinsheng [1 ]
机构：
[1] China Acad of Building Research, China
来源：
Tumu Gongcheng Xuebao/China Civil Engineering Journal | 1988年 / 21卷 / 03期
关键词：
Concrete Construction--Prestressing - Concrete Reinforcements - Concrete--Deformation - Structural Analysis--Calculations;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper presents a method for calculating camber and deflection of underacked prestressed concrete beams subjected to long-term loading. The method are adaptable to calculation of statically determinate or statically indeterminate, pre-tensioned or post-tensioned beams, with bonded or unbonded tendons and multi-layers of tendons mixed with non-prestressed steel etc. 32 beams have been observed in the long-term experiment. All theoretical values are in good agreement with the experimental ones. Meanwhile, it has been found that the time-dependent camber of beams will increase, keep constant or even decrease as time goes on according to their different arrangements of multi-layers of tendons and non-prestressed steel.
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页码：59 / 70
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