Bridge Monitoring – A practical guide

Contents Acknowledgements viii
About the authors ix
About the contributors xi
List of abbreviations xiii
Executive summary xv
1 Introduction 1
1.1 Scope of this guide 1
1.2 Companion publications 1
1.3 Other bridge monitoring guides 1
1.4 Outline 2
References 2
2 The purpose of bridge monitoring 5
2.1 Introduction 5
2.2 Making a case for monitoring 5
2.3 Categorisation of bridge monitoring systems 8
2.4 Inspections and assessments 12
References 14
3 Specification of bridge monitoring systems 17
3.1 Introduction 17
3.2 Monitoring system requirements 17
Reference 20
4 Planning and design of bridge monitoring
systems 21
4.1 Site survey 21
4.2 Potential hazards and site access requirements 22
4.3 Location of sensors 25
4.4 Available power supplies and cable runs 25
4.5 Other infrastructure and potential obstacles 26
4.6 The CDM regulations 26
4.7 Monitoring system architecture 26
4.8 Component selection 28
References 28
5 Technologies for bridge monitoring 29
5.1 Sensor technologies 29
5.2 Sensor connectivity 46
5.3 Data acquisition and logging 49
5.4 Communications 49
5.5 Data management system 53
References 55
6 Deployment and operation 57
6.1 Prior to deployment 57
6.2 Deployment and commissioning 59
6.3 Operation 59
6.4 Maintenance 60
6.5 Decommissioning 61
References 63
7 Case Study: Ferriby Road Bridge monitoring 65
7.1 Description and background 65
7.2 Monitoring objectives 65
7.3 Monitoring solution 65
7.4 Results 67
References 68
8 Case study: Black River Bridge 69
Neil A. Hoult
8.1 Description 69
8.2 Background 69
8.3 Monitoring objectives 69
8.4 Monitoring solution 70
8.5 Results 70
References 71
9 Case study: Hammersmith Flyover monitoring 73
Graham T. Webb
9.1 Description 73
9.2 Background 74
9.3 Challenges 74
9.4 Monitoring objectives 74
9.5 Data interpretation 74
9.6 Summary 76
References 76
10 Case study: Stafford Area Improvements
Programme railway bridges 77
Liam J. Butler
10.1 Description and background 77
10.2 Monitoring objectives 77
10.3 Monitoring solution 78
10.4 Preliminary Results 79
Reference 80
11 Case study: UBR 120 Killiney Strand 81
Niamh Gibbons
11.1 Description 81
11.2 Monitoring objectives 81
11.3 Instrumentation and monitoring 82
11.4 Results 84
11.5 Conclusions 85
References 87
12 Case study: Second Severn Crossing 89
John Macdonald
12.1 Introduction 89
12.2 Description of the structure 89
12.3 Monitoring objectives 89
12.4 Monitoring system 91
12.5 Findings 91
12.6 Conclusions 93
12.7 Acknowledgements 93
References 93
13 Case study: Instrumentation and monitoring of
the Frampton Cotterell FRP traffic bridge 95
Wendel Sebastian
13.1 Description and background 95
13.2 Monitoring 95
13.3 Wider study 97
References 98
14 Summary and conclusions 99
References 99
Appendix 1 Example monitoring system specifications 101
A1. Bridge movement monitoring 101
A2. Acoustic emission monitoring 102
Appendix 2 Example of a value assessment methodology 111
References 113
Index 115