All Outputs (27)

Experimental Demonstration of a Mode Shape-Based Scour-Monitoring Method for Multispan Bridges with Shallow Foundations (2020)
Journal Article
Malekjafarian, A., Kim, C., O'Brien, E., Prendergast, L. J., Fitzgerald, P., & Nakajima, S. (2020). Experimental Demonstration of a Mode Shape-Based Scour-Monitoring Method for Multispan Bridges with Shallow Foundations. Journal of Bridge Engineering, 25(8), Article 04020050. https://doi.org/10.1061/%28asce%29be.1943-5592.0001586

A vibration-based scour monitoring approach applicable to bridges with multiple simply supported spans on shallow foundations is experimentally investigated in this paper. A monitoring strategy based on the relative changes in pier mode shape amplitu... Read More about Experimental Demonstration of a Mode Shape-Based Scour-Monitoring Method for Multispan Bridges with Shallow Foundations.

A framework for assessing the value of information for health monitoring of scoured bridges (2020)
Journal Article
Limongelli, M. P., Giordano, P. F., & Prendergast, L. (2020). A framework for assessing the value of information for health monitoring of scoured bridges. Journal of Civil Structural Health Monitoring, 10, https://doi.org/10.1007/s13349-020-00398-0

© 2020, Springer-Verlag GmbH Germany, part of Springer Nature. It is generally accepted that climate change is leading to increased frequency of extreme weather events worldwide, and this is placing heavier demands on an already aging infrastructure-... Read More about A framework for assessing the value of information for health monitoring of scoured bridges.

Influence of scour depth and type on p–y curves for monopiles in sand under monotonic lateral loading in a geotechnical centrifuge (2020)
Journal Article
Chortis, G., Askarinejad, A., Prendergast, L., Li, Q., & Gavin, K. (2020). Influence of scour depth and type on p–y curves for monopiles in sand under monotonic lateral loading in a geotechnical centrifuge. Ocean Engineering, 197, Article 106838. https://doi.org/10.1016/j.oceaneng.2019.106838

The influence of scour on the lateral response of monopile foundations for offshore wind turbines is investigated in this paper. Application of lateral load-displacement (p-y) curves to predict the lateral pile behaviour is subject to uncertainty as... Read More about Influence of scour depth and type on p–y curves for monopiles in sand under monotonic lateral loading in a geotechnical centrifuge.

Centrifuge modeling of the impact of local and global scour erosion on the monotonic lateral response of a monopile in sand (2020)
Journal Article
Li, Q., Li, Q., Prendergast, L. J., Askarinejad, A., Chortis, G., & Gavin, K. (2020). Centrifuge modeling of the impact of local and global scour erosion on the monotonic lateral response of a monopile in sand. Geotechnical Testing Journal, 43(5), 20180322. https://doi.org/10.1520/GTJ20180322

Copyright © 2020 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. The majority of offshore wind turbines are founded on large-diameter, open-ended steel monopiles. Monopiles must resist lateral loads and ov... Read More about Centrifuge modeling of the impact of local and global scour erosion on the monotonic lateral response of a monopile in sand.

Use of mode shape ratios for pier scour monitoring in two-span integral bridges under changing environmental conditions (2019)
Journal Article
Malekjafarian, A., Prendergast, L., & OBrien, E. J. (2020). Use of mode shape ratios for pier scour monitoring in two-span integral bridges under changing environmental conditions. Canadian Journal of Civil Engineering, 47(8), 962-973. https://doi.org/10.1139/cjce-2018-0800

In this paper, a novel pier scour indicator is introduced, which uses the ratio between mode shape amplitudes identified at two points on an integral bridge structure to monitor the progression of scour erosion. The Mode Shape Ratio (MSR) is investig... Read More about Use of mode shape ratios for pier scour monitoring in two-span integral bridges under changing environmental conditions.

Scour damage detection and structural health monitoring of a laboratory-scaled bridge using a vibration energy harvesting device (2019)
Journal Article
Fitzgerald, P., Malekjafarian, A., Bhowmik, B., Prendergast, L., Cahill, P., Kim, C., …Obrien, E. (2019). Scour damage detection and structural health monitoring of a laboratory-scaled bridge using a vibration energy harvesting device. Sensors, 19(11), 21. https://doi.org/10.3390/s19112572

A vibration-based bridge scour detection procedure using a cantilever-based piezoelectric energy harvesting device (EHD) is proposed here. This has an advantage over an accelerometer-based method in that potentially, the requirement for a power sourc... Read More about Scour damage detection and structural health monitoring of a laboratory-scaled bridge using a vibration energy harvesting device.

Experimental application of FRF-based model updating approach to estimate soil mass and stiffness mobilised under pile impact tests (2019)
Journal Article
Prendergast, L., Wu, W., & Gavin, K. (2019). Experimental application of FRF-based model updating approach to estimate soil mass and stiffness mobilised under pile impact tests. Soil Dynamics and Earthquake Engineering, 123, 1-15. https://doi.org/10.1016/j.soildyn.2019.04.027

The dynamic response of structures in contact with soil is receiving increasing interest and there is a growing need for more accurate models capable of simulating the behaviour of these systems. This is particularly important in the field of offshor... Read More about Experimental application of FRF-based model updating approach to estimate soil mass and stiffness mobilised under pile impact tests.