土木工程与管理学报2026，Vol.43Issue(1)：35-47,13.DOI:10.13579/j.cnki.2095-0985.2026.20250270
基于剪力钉群连接件推出试验的声发射特征信号分析
Acoustic Emission Characteristic Signal Analysis Based on Push-out Tests of Shear Nail Cluster Connectors
雷岩 1刘国栋 2苏小虎 1李茂 2张田丰 3冶发林 1王永强1
作者信息
- 1. 中铁铁工城市建设有限公司,内蒙古 呼和浩特 010080
- 2. 呼和浩特市建设工程质量安全中心,内蒙古 呼和浩特 010041
- 3. 呼和浩特经济技术开发区建设管理局,内蒙古 呼和浩特 010090
- 折叠
摘要
Abstract
Shear connectors are critical for the composite action in steel-concrete girders,and their performance directly affects the safty and durability of the overall structhre.To investigate the shear performance and damage mechanism of stud clusters,acoustic emission(AE)monitoring was conduc-ted during push-out tests on 6 specimens.The effects of stud number and vertical spacing on AE char-acteristics were analyzed.By comparing load-slip curves with AE energy histories,the damage pro-gression inside the connectors was revealed,along with energy levels and signal features at each stage,k-means clustering was applied to classify signal types.The results indicate that AE event counts increased significantly in the late elastic stage.During the plastic stage,interfacial debonding continued,and the cumulative ring-down count rose most rapidly upon stud shear failure.Before fail-ure,AE signals changed abruptly.Afterward,signal counts grew,with the highest energy release oc-curring during stud fracture.K-means clustering categorized AE signals into three types corresponding to failure modes in steel-concrete composite beams.关键词
剪力连接件/钢-混组合结构/推出试验/荷载-滑移曲线/声发射Key words
shear connector/steel-concrete composite structure/push-out test/load-slip curve/acoustic emission分类
交通工程引用本文复制引用
雷岩,刘国栋,苏小虎,李茂,张田丰,冶发林,王永强..基于剪力钉群连接件推出试验的声发射特征信号分析[J].土木工程与管理学报,2026,43(1):35-47,13.
