水利学报2025，Vol.56Issue(2)：170-180,11.DOI:10.13243/j.cnki.slxb.20240128
基于原型试验和封装式策略的PCCP断丝信号有效特征挖掘
Effective parameters mining algorithm for broken wire signals of prestressed concrete cylinder pipes based on prototype experiment and wrapper strategy
摘要
Abstract
To enhance the capability of distributed optical fiber monitoring system on real-time broken wire signal detection of prestressed concrete cylinder pipe(PCCP),this study proposes a wrapper theory-based model for mining the effective feature parameters which are conducive to identifying PCCP broken wire signals.Phase sensi-tive optical time domain reflectometry(Φ-OTDR)monitoring system is used to obtain vibration signals,and the o-riginal feature parameter set is established by considering time domain,frequency domain,and time-frequency domain.The improvement strategies for whale optimization algorithm(WOA)are established by employing the non-linear adaptive weights,the nonlinear convergence factor,the Gaussian mutation perturbation,and the Tent chaotic perturbation.By integrating the improved WOA(IWOA)and the hierarchical clustering(HC),the IWOA-HC model for effective feature mining is constructed.The following results are drawn.Fisher,BPSO-HC,WOA-HC,and IWOA-HC mine 61,35,32,and 27 effective feature parameters,respectively.Using the above four feature parameter sets for vibration pattern recognition,the accuracy rates are 71.11％,86.67％,89.44％,and 97.22％,respectively.The effective feature parameters mined by IWOA-HC have the best pattern recognition performance.This research provides technical support for health diagnosis and disaster warning of in-service PCCP engineering.关键词
预应力钢筒混凝土管/断丝实时监测/原型试验/有效特征挖掘/封装式建模Key words
prestressed concrete cylinder pipe/real-time broken wire monitoring/prototype experiment/effective parameter mining/wrapper modelling分类
建筑与水利引用本文复制引用
杨光,栾博文,李波,孙锦,朱赵辉,张建伟..基于原型试验和封装式策略的PCCP断丝信号有效特征挖掘[J].水利学报,2025,56(2):170-180,11.基金项目
国家自然科学基金项目(52109155,52279133,42401319) （52109155,52279133,42401319）
