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Affiliation of Author(s):

土木工程学院

Journal:

Journal of Composites for Construction, ASCE

Key Words:

中文关键字：纤维增强复合材料，混凝土，粘结滑移，英文关键字：

Abstract:

The technique of externally bonding fiber-reinforced polymer (FRP) composites has become very popular worldwide for retrofitting existing reinforced concrete (RC) structures. Debonding of FRP from the concrete substrate is a typical failure mode in such strengthened structures. The bond behavior between FRP and concrete thus plays a crucial role in these structures. The FRP-to-concrete bond behavior has been extensively investigated experimentally, commonly using a single or double shear test of the FRP-to-concrete bonded joint. Comparatively, much less research has been concerned with numerical simulation, chiefly due to difficulties in the accurate modeling of the complex behavior of concrete. This paper presents a simple but robust finite-element (FE) model for simulating the bond behavior in the entire debonding process for the single shear test. A concrete damage plasticity model is proposed to capture the concrete-to-FRP bond behavior. Numerical results are in close agreement with test data, validating the model. In addition to accuracy, the model has two further advantages: it only requires the basic material parameters (i.e., no arbitrary user-defined parameter such as the shear retention factor is required) and it can be directly implemented in the FE software ABAQUS.

Note:

陶毅

Co-author:

Jian-FeiChen

First Author:

Yi Tao

Indexed by:

Journal paper

Volume:

卷：

Issue:

期：

Page Number:

页：

Translation or Not:

no

Date of Publication:

2014-04-01