Repair of reinforced concrete deep beams using post-tensioned CFRP rods

被引：21

作者：

Burningham, Clayton A. ^{[1
]}

Pantelides, Chris P. ^{[2
]}

Reaveley, Lawrence D. ^{[2
]}

机构：

[1] Reaveley & Associates, Salt Lake City, UT 84112 USA

[2] Univ Utah, Dept Civil & Environm Engn, Salt Lake City, UT 84112 USA

来源：

COMPOSITE STRUCTURES | 2015年 / 125卷

关键词：

CFRP rod; Concrete; Deep beam; Post-tensioning; Repair; Shear; STRENGTH PREDICTION;

D O I：

10.1016/j.compstruct.2015.01.054

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A repair method for reinforced concrete deep beams with external unbonded post-tensioned carbon fiber reinforced polymer (CFRP) rods is presented. Reinforced concrete deep beams in this research were pre-damaged to simulate reinforced concrete girder webs with diagonal cracks. Experimental data and analytical methods for predicting the ultimate capacity of reinforced concrete deep beams which include the effect of externally post-tensioned CFRP rods are examined. The ultimate load capacity of the repaired beams was increased compared to the nominal capacity of the control beam while the deflection capacity remained the same. Strut-and-tie models of the control and repaired reinforced concrete deep beams predicted the ultimate load capacity with reasonable accuracy. The strut-and-tie models were optimized to reduce the ratio of experimental to analytical ultimate load capacity. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：256 / 265

页数：10

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