Shear Prediction of RC Beam Bonded with FRP

王苏岩; 周英武; 李宏男

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Shear Prediction of RC Beam Bonded with FRP

更新时间：2025-12-11

- Shear Prediction of RC Beam Bonded with FRP
- Issue 2, Pages: 171-176+183(2008)
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  CLC： U375.1
- Published：2008
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[1]王苏岩,周英武,李宏男.FRP加固钢筋混凝土梁的抗剪计算方法[J].防灾减灾工程学报,2008(02):171-176+183.

王苏岩, 周英武, 李宏男. Shear Prediction of RC Beam Bonded with FRP[J]. 2008, (2): 171-176+183.
[1]王苏岩,周英武,李宏男.FRP加固钢筋混凝土梁的抗剪计算方法[J].防灾减灾工程学报,2008(02):171-176+183. DOI：

王苏岩, 周英武, 李宏男. Shear Prediction of RC Beam Bonded with FRP[J]. 2008, (2): 171-176+183. DOI：

摘要

随着利用FRP加固混凝土结构研究的深入和应用的拓展

FRP加固钢筋混凝土梁抗剪性能的研究已取得了丰硕的成果。以往对抗剪承载力的分析大多是基于有效应变即对极限应变进行有效折减的方法

而最近的研究则引入了裂缝处FRP应变分布不均匀系数。在此基础上

本文综合考虑了FRP发挥的最大应变、沿裂缝应变分布的不均性以及斜裂缝倾角对有效应变的影响

提出了等效有效应变的概念

使计算趋于简单和清晰。本文收集了128根FRP全包裹的、以FRP断裂破坏为主的钢筋混凝土梁的抗剪实验数据

通过对主要影响因素的统计分析

建立了等效有效应变简单可靠的计算公式和基于FRP断裂的抗剪承载力设计方法。128根实验梁的抗剪计算结果表明

本文提出的方法简单可行

意义明确

且精度要比已有的建议公式稍高。

Abstract

During the past decades

substantial research has been carried out on the external bonding of Fiber Reinforced Polymer（FRP） strips to deficient Reinforced Concrete（RC） beams

for the well-known superior properties of FRP. Numerous shear predictions have been established by using the effective strain of FRP or introducing an ultimate stress discount coefficient. Latest design concept is the use of stress distribution factor. In the paper

an equivalent effective strain of FRP is advanced which contains the concepts of maximum strain

stress distribution factor and the effect of critical shear crack angle. To develop a simple

accurate proposal of such equivalent effective strain

major effect factors are first studied and explicit by the statistical independent hypothesis test on a database of 128 RC beams wrapped by FRP or failure with FRP rupture in literatures. Finally

a simple and rational shear design proposal is presented which has a higher accuracy than the existing models using the above database.

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references

FRP加固钢筋混凝土梁抗剪计算公式的对比分析 [J]. 周英武,王苏岩. 铁道科学与工程学报 . 2005(03)

碳纤维布提高钢筋混凝土梁受剪承载力试验研究 [J]. 赵彤,谢剑,戴自强. 建筑结构 . 2000(07)

外贴碳纤维（CFRP）加固梁斜截面受力性能的实验研究 [D]. 郝震. 东南大学 2004

数理统计学[M]. 大连理工大学出版社 , 滕素珍,冯敬海编著, 2005

Debonding in RC Beams Shear Strengthened with Complete FRP Wraps [J] . S. Y. Cao,J. F. Chen,J. G. Teng,Z. Hao,J. Chen. Journal of Composites for Construction . 2005 (5)

Simplified Shear Design Method for Concrete Beams Strengthened with Fiber Reinforced Polymer Sheets [J] . Christophe Deniaud,J. J. Roger Cheng. Journal of Composites for Construction . 2004 (5)

Shear Capacity of Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Beams: Fiber Reinforced Polymer Rupture [J] . J. F. Chen,J. G. Teng. Journal of Structural Engineering . 2003 (5)

Design of Concrete Flexural Members Strengthened in Shear with FRP [J] . Thanasis C. Triantafillou,Costas P. Antonopoulos. Journal of Composites for Construction . 2000 (4)

Contribution of Externally Bonded FRP to Shear Capacity of RC Flexural Members [J] . Ahmed Khalifa,William J. Gold,Antonio Nanni,Abdel Aziz M.I.. Journal of Composites for Construction . 1998 (4)

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