Presents the first ever guide for vehicle scanning of the dynamic properties of bridges

Written by the leading author on the subject of vehicle scanning method (VSM) for bridges, this book allows engineers to monitor every bridge of concern on a regular and routine basis, for the purpose of maintenance and damage detection. It includes a review of the existing literature on the topic and presents the basic concept of extracting bridge frequencies from a moving test vehicle fitted with vibration sensors. How road surface roughness affects the vehicle scanning method is considered and a finite element simulation is conducted to demonstrate how surface roughness affects the vehicle response. Case studies and experimental results are also included.

Vehicle Scanning Method for Bridges covers an enhanced technique for extracting higher bridge frequencies. It examines the effect of road roughness on extraction of bridge frequencies, and looks at a dual vehicle technique for suppressing the effect of road roughness. A filtering technique for eliminating the effect of road roughness is also presented. In addition, the book covers the identification of bridge mode shapes, contact-point response for modal identification of bridges, and damage detection of bridges--all through the use of a moving test vehicle.

* The first book on vehicle scanning of the dynamic properties of bridges

* Written by the leading author on the subject

* Includes a state-of-the-art review of the existing works on the vehicle scanning method (VSM)

* Presents the basic concepts for extracting bridge frequencies from a moving test vehicle fitted with vibration sensors

* Includes case studies and experimental results

The first book to fully cover scanning the dynamic properties of bridges with a vehicle, Vehicle Scanning Method for Bridges is an excellent resource for researchers and engineers working in civil engineering, including bridge engineering and structural health monitoring.

YEONG-BIN YANG, PHD, is Honorary Dean of Civil Engineering, Chongqing University in China, Feng Tay Chair Professor of National Yunlin University of Science and Technology (YunTech), and Professor Emeritus of National Taiwan University (NTU) in Taiwan. He is a member of the Chinese Academy of Engineering, Austrian Academy of Sciences, and EU Academy of Sciences. Also, he is an Editor-in-Chief of the International Journal of Structural Stability and Dynamics, President of the Asian-Pacific Association of Computational Mechanics (APACM), and Chairman of the East Asia-Pacific Conference on Structural Engineering and Construction (EASEC).

JUDY P. YANG, PHD, is an Associate Professor in the Dept. of Civil Engineering, National Chiao Tung University, Taiwan.

BIN ZHANG is a PhD student in the School of Civil Engineering, Chongqing University in China.

YUNTIAN WU, PHD, is a Professor in the School of Civil Engineering, Chongqing University, China.

Klappentext

PRESENTS THE FIRST EVER GUIDE FOR VEHICLE SCANNING OF THE DYNAMIC PROPERTIES OF BRIDGES

Written by the leading author on the subject of vehicle scanning method (VSM) for bridges, this book allows engineers to monitor every bridge of concern on a regular and routine basis, for the purpose of maintenance and damage detection. It includes a review of the existing literature on the topic and presents the basic concept of extracting bridge frequencies from a moving test vehicle fitted with vibration sensors. How road surface roughness affects the vehicle scanning method is considered and a finite element simulation is conducted to demonstrate how surface roughness affects the vehicle response. Case studies and experimental results are also included.

Vehicle Scanning Method for Bridges covers an enhanced technique for extracting higher bridge frequencies. It examines the effect of road roughness on extraction of bridge frequencies, and looks at a dual vehicle technique for suppressing the effect of road roughness. A filtering technique for eliminating the effect of road roughness is also presented. In addition, the book covers the identification of bridge mode shapes, contact-point response for modal identification of bridges, and damage detection of bridgesall through the use of a moving test vehicle.

Key Features

• The first book on vehicle scanning of the dynamic properties of bridges
• Written by the leading author on the subject
• Includes a state-of-the-art review of the existing works on the vehicle scanning method (VSM)
• Presents the basic concepts for extracting bridge frequencies from a moving test vehicle fitted with vibration sensors
• Includes case studies and experimental results

The first book to fully cover scanning the dynamic properties of bridges with a vehicle, Vehicle Scanning Method for Bridges is an excellent resource for researchers and engineers working in civil engineering, including bridge engineering and structural health monitoring.

Inhalt

Preface ix

Acknowledgments xiii

1 Introduction 1

1.1 Modal Properties of Bridges 1

1.2 Basic Concept of the Vehicle Scanning Method 3

1.2.1 Bridge Frequency Extraction 3

1.2.2 Bridge Mode Shapes Construction 4

1.3 Brief on the Works Conducted by Yang and CoWorkers 5

1.4 Works Done by Researchers Worldwide 7

1.4.1 Theoretical Analysis and Simulation 8

1.4.2 Laboratory Test 16

1.4.3 Field Investigation 20

1.5 Concluding Remarks 22

2 Vehicle Scanning of Bridge Frequencies: Simple Theory 25

2.1 Introduction 25

2.2 Formulation of the Analytical Theory 27

2.3 Single Mode Analytical Solution 28

2.4 Condition of Resonance 34

2.5 Simulation by the Finite Element Method (FEM) 39

2.6 Verification of Accuracy of Analytical Solutions 41

2.7 Extraction of Fundamental Frequency of Bridge 42

2.7.1 Effect of Moving Speed of the Vehicle 46

2.7.2 Condition of Resonance 46

2.7.3 Effect of Damping of the Bridge 48

2.7.4 Effect of a Vehicle Traveling over a Stiffer Bridge 49

2.8 Concluding Remarks 50

3 Vehicle Scanning of Bridge Frequencies: General Theory 51

3.1 Introduction 51

3.2 Physical Modeling and Formulation 53

3.3 Dynamic Response of the Beam 55

3.3.1 Beam's Response to a Single Moving Vehicle 58

3.3.2 Beam's Response to Five Moving Vehicles 61

3.4 Dynamic Response of the Moving Vehicle 62

3.5 Numerical Verification 66

3.6 Concluding Remarks 69

4 Vehicle Scanning of Bridge Frequencies: Experiment 71

4.1 Introduction 71

4.2 Objective of This Chapter 72

4.3 Description of the Test Bridge 73

4.4 Description of the Test Vehicle 73

4.5 Instrumentation 75

4.6 Testing Plan 75

4.7 Eigenvalue Analysis Results 77

4.8 Experimental Results 77

4.8.1 Ambient Vibration Test 77

4.8.2 Vehicle Characteristics Test 78

4.8.3 Bridge Response to the Moving Truck 79

4.8.4 Response of the Test Cart Resting on the Bridge to the Moving Truck 81

4.8.5 Response of the Moving Test Cart with No Ongoing Traffic 83

4.8.6 Response of the Moving Test Cart with Ongoing Traffic 85

4.9 Comparing the Measured Results with Numerical Results 86

4.10 Concluding Remarks 87

5 EMDEnhanced Vehicle Scanning of Bridge Frequencies 91

5.1 Introduction 91

5.2 Analytical Formulation of the Problem 93

5.3 Finite Element Simulation of the Problem 96

5.4 Empirical Mode Decomposition 97

5.5 Extraction of Bridge Frequencies by Numerical…