Vehicle Scanning Method for Bridges

Name: Vehicle Scanning Method for Bridges
Brand: Wiley-ISTE
Price: 117.99 EUR
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Yeong-Bin Yang Judy P. Yang Yuntian Wu Bin Zhang(Autor*in)

Wiley-ISTE (Verlag)

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Erschienen am 12. September 2019

288 Seiten

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978-1-119-53949-0 (ISBN)

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Beschreibung

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Inhalt

Cover
Title Page
Copyright Page
Contents
Preface
Acknowledgments
Chapter 1 Introduction
1.1 Modal Properties of Bridges
1.2 Basic Concept of the Vehicle Scanning Method
1.2.1 Bridge Frequency Extraction
1.2.2 Bridge Mode Shapes Construction
1.3 Brief on the Works Conducted by Yang and Co-Workers
1.4 Works Done by Researchers Worldwide
1.4.1 Theoretical Analysis and Simulation
1.4.2 Laboratory Test
1.4.3 Field Investigation
1.5 Concluding Remarks
Chapter 2 Vehicle Scanning of Bridge Frequencies: Simple Theory
2.1 Introduction
2.2 Formulation of the Analytical Theory
2.3 Single-Mode Analytical Solution
2.4 Condition of Resonance
2.5 Simulation by the Finite Element Method (FEM)
2.6 Verification of Accuracy of Analytical Solutions
2.7 Extraction of Fundamental Frequency of Bridge
2.7.1 Effect of Moving Speed of the Vehicle
2.7.2 Condition of Resonance
2.7.3 Effect of Damping of the Bridge
2.7.4 Effect of a Vehicle Traveling over a Stiffer Bridge
2.8 Concluding Remarks
Chapter 3 Vehicle Scanning of Bridge Frequencies: General Theory
3.1 Introduction
3.2 Physical Modeling and Formulation
3.3 Dynamic Response of the Beam
3.3.1 Beam's Response to a Single Moving Vehicle
3.3.2 Beam's Response to Five Moving Vehicles
3.4 Dynamic Response of the Moving Vehicle
3.5 Numerical Verification
3.6 Concluding Remarks
Chapter 4 Vehicle Scanning of Bridge Frequencies: Experiment
4.1 Introduction
4.2 Objective of This Chapter
4.3 Description of the Test Bridge
4.4 Description of the Test Vehicle
4.5 Instrumentation
4.6 Testing Plan
4.7 Eigenvalue Analysis Results
4.8 Experimental Results
4.8.1 Ambient Vibration Test
4.8.2 Vehicle Characteristics Test
4.8.3 Bridge Response to the Moving Truck
4.8.4 Response of the Test Cart Resting on the Bridge to the Moving Truck
4.8.5 Response of the Moving Test Cart with No Ongoing Traffic
4.8.6 Response of the Moving Test Cart with Ongoing Traffic
4.9 Comparing the Measured Results with Numerical Results
4.10 Concluding Remarks
Chapter 5 EMD-Enhanced Vehicle Scanning of Bridge Frequencies
5.1 Introduction
5.2 Analytical Formulation of the Problem
5.3 Finite Element Simulation of the Problem
5.4 Empirical Mode Decomposition
5.5 Extraction of Bridge Frequencies by Numerical Simulation
5.5.1 Example 1: Single Moving Vehicle
5.5.2 Example 2: Five Sequential Moving Vehicles
5.5.3 Example 3: Five Random Moving Vehicles
5.6 Experimental Studies
5.7 Concluding Remarks
Chapter 6 Effect of Road Roughness on Extraction of Bridge Frequencies
6.1 Introduction
6.2 Simulation of Roughness Profiles
6.3 Simulation of Bridges with Rough Surface
6.4 Effect of Road Roughness on Vehicle Response
6.4.1 Case 1: Vehicle Frequency Less than Any Bridge Frequencies
6.4.2 Case 2: Vehicle Frequency Greater than the First Bridge Frequency
6.5 Vehicle Responses Induced by Separate Excitational Sources
6.6 Closed-Form Solution of Vehicle Response Considering Road Roughness
6.7 Reducing the Impact of Road Roughness by Using Two Connected Vehicles
6.8 Numerical Studies
6.8.1 Example 1. Two Identical Vehicles Moving over the Bridge of Class A Roughness
6.8.2 Example 2. Two Identical Vehicles Moving over the Bridge of Class C Roughness
6.8.3 Example 3. Two Vehicles of Identical Frequency but Different Properties
6.8.4 Effect of Vehicle Spacing on Identification of Bridge Frequencies
6.9 Concluding Remarks
Chapter 7 Filtering Technique for Eliminating the Effect of Road Roughness
7.1 Introduction
7.2 Numerical Simulations for Vehicle Responses
7.3 Filtering Techniques
7.3.1 Band-Pass Filter (BPF)/Band-Stop Filter (BSF)
7.3.2 Singular Spectrum Analysis (SSA)
7.3.3 Singular Spectrum Analysis with Band-Pass Filter (SSA-BPF)
7.4 Case Studies
7.4.1 Case 1: Vehicle Frequency Smaller than First Bridge Frequency
7.4.2 Case 2: Vehicle Frequency Greater than First Bridge Frequency
7.5 Concluding Remarks
Chapter 8 Hand-Drawn Cart Used to Measure Bridge Frequencies
8.1 Introduction
8.2 Dynamic Properties of the Hand-Drawn Test Cart
8.3 Basic Dynamic Tests for the Test Cart
8.4 Field Tests
8.4.1 Effect of Cart Weight
8.4.2 Effect of Various Traveling Speeds
8.4.3 Various Volumes of Existing Traffic Flows
8.5 Concluding Remarks
Chapter 9 Theory for Retrieving Bridge Mode Shapes
9.1 Introduction
9.2 Hilbert Transformation
9.3 Theoretical Formulation
9.4 Algorithms and Constraints
9.5 Case Studies
9.5.1 Test Vehicle Passing through a Bridge with Smooth Road Surface
9.5.2 Effect of Vehicle Speed
9.5.3 Test Vehicle Traveling along with Random Traffic
9.5.4 Effect of Road Surface Roughness
9.6 Concluding Remarks
Chapter 10 Contact-Point Response for Modal Identification of Bridges
10.1 Introduction
10.2 Theoretical Formulation
10.2.1 Dynamic Response of the VehicleBridge Contact Point
10.2.2 Dynamic Response of the Moving Vehicle
10.2.3 Procedure for Calculating the Contact-Point Response in a Field Test
10.2.4 Relationship Between the Contact-Point and Vehicle Responses
10.3 Finite Element Simulation of VBI Problems
10.3.1 Brief on VBI Element
10.3.2 Verification of the Theoretical Solution
10.4 Retrieval of Bridge Frequencies
10.5 Retrieval of Bridge Mode Shapes
10.5.1 Effect of Moving Speed
10.5.2 Effect of Vehicle Frequency
10.6 Effect of Road Roughness
10.6.1 Bridge with Rough Surface Free of Existing Traffic
10.6.2 Bridge with Rough Surface under Existing Traffic
10.7 Concluding Remarks
Chapter 11 Damage Detection of Bridges Using the Contact-Point Response
11.1 Introduction
11.2 Dynamic Response of the Vehicle-Bridge System
11.2.1 Contact-Point Response: Analytical Solution
11.2.2 Contact-Point Response: For Use in Field Test
11.3 Algorithm for Damage Detection
11.3.1 Hilbert Transformation
11.3.2 Strategy for Damage Detection
11.4 Finite Element Simulation of the Problem
11.4.1 Damage Element for Beams
11.4.2 Brief on VehicleBridge Interaction (VBI) Element Used
11.5 Detection of Damages on a Beam
11.5.1 Detection of Damage Location on the Beam
11.5.2 Detection of Damage Severity
11.5.3 Detection of Multiple Damages
11.6 Parametric Study
11.6.1 Effect of Test Vehicle Speed
11.6.2 Effect of Measurement Noise
11.6.3 Bridge with Rough Surface Free of Random Traffic
11.6.4 Bridge with Rough Surface under Random Traffic
11.7 Concluding Remarks
Appendix Finite Element Simulation
A.1 Derivation of VBI Element
A.2 Assembly of VBI Element
References
Author Index
Subject Index
EULA

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