基于压电技术和重量分析的钢筋混凝土缺陷检测方法的研究
Yilong Yu1, Yulin Dong2, Yulong Jiang1
1China State Construction Hongda Engineering Co., Ltd., Beijing 100016, China.
Sensors (Basel, Switzerland)
|July 12, 2025
概括
本研究介绍了一种基于压电的波浪分析方法,用于检测钢筋混凝土结构中的内部空洞缺陷. 该技术有效量化缺陷,有助于结构维护和维修.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
背景情况:
- 钢筋混凝土结构面临复杂的内部工作条件.
- 内部空洞缺陷对结构完整性构成重大风险.
- 准确的检测方法对于维护和维修至关重要.
研究的目的:
- 建议使用压电陶材料和波浪分析对钢筋混凝土内部空洞缺陷提出积极检测方法.
- 为了验证应力波传播和减弱的可行性和特征.
- 为量化分析开发一个全面的缺陷评估指数.
主要方法:
- 使用压电陶材料驱动和感应应力波.
- 应用波束数据包能量理论和通过能量分布进行复合权重,用于信号处理.
- 介绍了用于重量向量分析的分析层次过程 (AHP).
- 开发了一种线性回归模型,用于全面的缺陷评估指数 (DI).
主要成果:
- 基于压电的方法适用于各种混凝土强度等级.
- 压力波信号能量随着检测距离和损伤程度的增加而减少.
- 与无缺陷条件相比,在缺陷条件下波段数据包能量下降了85.42%.
- 缺陷评估指数 (DI) 随着缺陷的增加,从0增加到0.859.
结论:
- 零电技术与重量分析相结合,可有效地检测钢筋混凝土的质量和数量缺陷.
- 开发的方法为维护和修复这些结构提供了有价值的见解.
- 该技术在不同的混凝土等级和缺陷严重程度上证明了适用性.
相关概念视频
01:12Non-destructive Tests for Concrete Strength
195
The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
195
01:16Dynamic Modulus of Elasticity of Concrete
549
The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
549
01:20Microcracking in Concrete
210
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
210
01:27Corrosion of Reinforcement
255
The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
255
01:18Mechanical Characteristics of Steel
768
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
768
01:20Elasticity in Concrete
152
Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
152