Abstract
Marsh Lane viaduct is a typical example of a 19th century brick masonry railway arch in the UK. It frequently carries passenger trains to and from Leeds Station. This paper broadly discusses the sensing techniques and associated analysis procedures used to (i) identify the reasons for existing damage, (ii) quantify their impact on the dynamic response of the structure and (iii) measure degradation of the response over a period of one year. To identify existing damage, distortions in geometry of the structure are examined with new point cloud processing techniques. With the aid of limit analyses, these distortions are interpreted, and past support movements which may have caused the distortions are identified. Then, to measure the dynamic response of the bridge, quasi-distributed fibre optic strain sensing and digital image correlation displacement measurement techniques are used. These highlight the increased dynamic response around locations of existing damage, and point out to the global mechanisms of response that could propagate damage. Continuous fibre optic strain measurements between November 2017 and 2018 are then discussed to investigate the ongoing deterioration.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of ARCH 2019 |
| Publisher | Springer |
| Pages | 422-429 |
| Number of pages | 8 |
| ISBN (Electronic) | 978-3-030-29227-0 |
| ISBN (Print) | 978-3-030-29226-3 |
| DOIs | |
| Publication status | Published - 2020 |
| Event | 9th International Conference on Arch Bridges - Porto, Portugal Duration: 2 Oct 2019 → 4 Oct 2019 |
Publication series
| Name | Structural Integrity |
|---|---|
| Volume | 11 |
| ISSN (Print) | 2522-560X |
| ISSN (Electronic) | 2522-5618 |
Conference
| Conference | 9th International Conference on Arch Bridges |
|---|---|
| Country/Territory | Portugal |
| City | Porto |
| Period | 2/10/19 → 4/10/19 |
Funding
Acknowledgements. This work is being funded by the Lloyd’s Register Foundation, EPSRC (Ref. EP/N021614/1) and Innovate UK (Ref. 920035) The authors are grateful to Network Rail for providing power, technical support and site access for this research.
Keywords
- Digital image correlation
- Fibre optic strain sensing
- Masonry arch bridges
- Point clouds
- Primitive fitting
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