声明
摘要
Abstract
Table of Contents
Chapter 1 Introduction to Bridge Health Monitoring
1.1 Introduction
1.2 Aim of Bridge Health Monitoring(BHM)
1.3 Advantages of BHM
1.4 Thesis Motivation
1.5 Scope of Work
1.6 A glimpse of a certain cable stayed bridge(CCSB)
1.7 Thesis Organization
Chapter 2 Literature Review
2.1 Data Interpretation
2.1.1 Exploratory Data Analysis
2.1.2 Outlier Analysis
2.1.3 Pauta Criterion
2.1.4 Auto and Cross Correlation Functions
2.2 Filters
2.2.1 FIR Filters
2.2.2 IIR Filters
2.3 Signal Processing
2.3.1 Background
2.3.2 EMD
2.3.3 EEMD
2.3.4 CEEMD
2.3.5 PEEMD
2.4 Stochastic Subspace Identification(SSI)
2.5 Recursive Stochastic Subspace Identification(RSSI)
2.6 Conelusion
Chapter 3 Data Interpretation and Pre-Processing
3.1 Reliability of Acquire Data
3.1.1 EDAApplication to CCSB
3.1.2 Outlier Analysis
3.1.3 Auto and Cross Correlation Functions
3.2 Application of data pre-processing
3.2.1 FIR filtering of CCSB
3.2.2 IIR filtering of CCSB
3.3 Conclusion
Chapter 4 Signal Processing
4.1 Novel Improved Ensemble Empirical Mode Decomposition Method
4.1.1 Addition of White Noise
4.1.2 Decomposition
4.2 Selection and De-Noising of IMF
4.2.1 Cluster Analysis
4.2.2 Principal Component Analysis
4.2.3 Pareto Approach
4.3 Signal Processing for Real Life data of CCSB
4.3.1 Signal processing based on Novel Improved EEMD
4.4 Conclusions
Chapter 5 Stochastic Subspace Identification
5.1 Mathematical Representation of state space dynamic system
5.2 CO-SSI
5.3 DATA-SSI
5.4 Pole Discrimination:The Stabilization Diagram
5.5 Simulation based on Real Life data of Bridge
5.5.1 Stabilization diagram far varying Block Rows based on CO-SSI
5.5.2 Stabilization diagram for varying Block Rows based on DATA-SSI
5.5.3 Stabilization diagram for varying Order based on CO-SSI
5.5.4 Stabilization diagram for varying Order based on DATA-SSI
5.6 Simulation of real life data based on data interpretation
5.7 Simulation of real life data based on IIR filters
5.8 Simulation of real life data based on IEEMD
5.9 Conclusions
Chapter 6 Recursive Stochastic Subspace Identification
6.1 Covariance Driven Recursive Stochastic Subspace Identification(CO-RSSI)
6.2 Sliding Window Technique(SWT)
6.3 Extended Instrumental Variable Projection Approximation Subspace Tracking
6.4 Implementation of CO-RSSI
6.5 Simulation ofReal life data for CO-RSSI based on SWT
6.5.1 Determination of user defined parameters for eontinuous Identification
6.5.2 Continuous modal parameters identification for real life data based on CO-RSSI
6.6 Data Interpretation and Continuous identification for real life data
6.7 IEEMD and Continuous modal parameter identification for real life data
6.8 Conelusions
Chapter7 Conclusions and Recommendations
7.1 Conclusions
7.2 Recommendations
Acknowledgement
References
List of Publications
Research Fundings
Appendix