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.

引用

页码：59 / 70

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