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自感知 CFRP 织物用于增强混凝土结构的结构加固和损伤检测。

Self-Sensing CFRP Fabric for Structural Strengthening and Damage Detection of Reinforced Concrete Structures.

机构信息

Institute of Engineering Mechanics, China Earthquake Administration. Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Harbin 150080, China.

Hubei Key Laboratory of Earthquake Early Warning, Institute of Seismology, China Earthquake Administration, Wuhan 430071, China.

出版信息

Sensors (Basel). 2018 Nov 26;18(12):4137. doi: 10.3390/s18124137.

DOI:10.3390/s18124137

PMID:30486264

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6308633/

Abstract

This paper presents a concept of a Self-sensing Carbon Fiber Reinforced Polymer (SCFRP) system, which integrates the piezoceramic transducers with the common concrete strengthening materials, CFRP fabric. This integration provides the SCFRP fabric with the ability to monitor the structural health condition when the SCFRP fabric is applied on reinforced concrete structures. In order to validate the feasibility of this system, several three-point bending beam (3PBB) specimens were fabricated and tested before and after the specimens were reinforced with the proposed SCFRP fabric. In addition, the specimens with the low (C25) and high (C40) concrete grades were also experimentally investigated to evaluate the reinforced effectiveness of the SCFRP fabric. Finally, the experimental results demonstrate that the proposed SCFRP fabric can significantly improve the bearing capacity of the concrete structures, and provided the reinforced concrete structures with an ability of self-sensing their health condition.

摘要

本文提出了一种自感知碳纤维增强聚合物（SCFRP）系统的概念，该系统将压电陶瓷换能器与常见的混凝土增强材料碳纤维布集成在一起。这种集成使 SCFRP 布在应用于钢筋混凝土结构时具有监测结构健康状况的能力。为了验证该系统的可行性，对几个三点弯曲梁（3PBB）试件进行了制作和测试，这些试件在应用所提出的 SCFRP 布进行增强之前和之后进行了测试。此外，还对低（C25）和高（C40）混凝土等级的试件进行了实验研究，以评估 SCFRP 布的增强效果。最后，实验结果表明，所提出的 SCFRP 布可以显著提高混凝土结构的承载能力，并为增强后的混凝土结构提供了自感知健康状况的能力。