Damage Identification of Prefabricated Reinforced Concrete Box Culvert Based on Improved Fuzzy Clustering Algorithm and Acoustic Emission Parameters

Yafeng Gong,Feng He,Jiaxiang Song,Yang He,Siyuan Lin,Yubo Jiao

doi:10.1155/2021/6660915

Abstract

Prefabricated box culvert is a new structure in road engineering, whose health is very important to road safety. The use of acoustic emission (AE) as a detection method and the use of other improved algorithms to evaluate the damage of prefabricated box culverts are still insufficient. In this paper, two kinds of prefabricated box culverts are tested and studied, and the damage process of the box culverts is analysed based on the AE parameters of the box culvert using the traditional fuzzy C-means method (FCM). In addition, an improved algorithm based on the combination of grid density and distance (G-DFCM) was proposed, which was simulated and applied to the AE data analysis of the prefabricated box culvert. The research results show that the application effect of the G-DFCM algorithm is good, which not only overcomes the shortcomings of the original algorithm but also improves the effectiveness of the algorithm. This work can provide a supplement to the damage identification of fabricated box culverts.

Highlights

As an important part of roadbed engineering, culverts are often buried under underground roadbeds as water passages or traffic interruptions
Box culverts can be divided into the integral cast-in-situ type and prefabricated assembled type according to the construction method
Aiming at the shortcomings of the above three algorithms and drawing on their advantages and inspired by the above algorithms, this paper proposes a grid-based fuzzy C-means clustering analysis method based on the combination of density and distance (G-DFCM)

Summary

Introduction

As an important part of roadbed engineering, culverts are often buried under underground roadbeds as water passages or traffic interruptions. Box culverts can be divided into the integral cast-in-situ type and prefabricated assembled type according to the construction method. Integral cast-in-situ box culverts are suitable for various projects due to their high strength and rigidity and relatively low cost. Based on factorybased manufacturing, prefabricated assembled type box culverts have fast construction speed and stable quality and conform to the characteristics of green and ecological construction, which have attracted more and more attention in modern engineering construction methods. Scholars around the world have carried out related research on the structure of prefabricated box culverts. Liu and Chen [2] made relevant studies on the design parameters, structural requirements, reinforcement types, and construction methods of prefabricated assembled culverts and provided a reference for the design of prefabricated box culverts

Methods

Results

Conclusion