Assessing the suitability of bridge-scour-monitoring devices

Abstract

Bridge scour is a complex bridge-management problem. It is also a difficult forensic engineering challenge, as the greatest risk occurs during large flows and flood events, when visual inspection of the bridge piers is often not possible. This paper presents a review of scour prediction and modelling methods, whose results are used to determine the key parameters that scour-monitoring systems need to capture. Then, a review of existing monitoring approaches and technologies for scour monitoring is presented. The paper concludes with the proposal of a novel rating system for evaluating different scour-monitoring techniques. The new rating system is trialled ex-post for seven previously published bridge-scour-monitoring case studies to illustrate the use of the new methodology.

Reduction of erosion in a catchment structure in gravelly sandy river beds with gabion protection, applying hydraulic modeling

“…Investigaciones recientes se han centrado particularmente en el impacto de la acumulación de escombros durante las condiciones de flujo máximo [16] con recomendaciones que sugieren un aumento de hasta un 50% para las estimaciones de profundidad de socavación para acomodarlo [17]. Sin embargo [18], los estudios no exploran la progresión del riesgo de socavación durante las condiciones de flujo máximo, cuando la tasa de socavación es más alta y tampoco consideran los factores del suelo que contribuyen a su erosionabilidad, lo que a su vez afecta la formación/progresión de la socavación. [19] manifiestan que, los estudios existentes brindan información importante sobre el impacto potencial del cambio climático en el riesgo de socavación, la falta de modelos climáticos e hidrológicos confiables significa que las predicciones del riesgo de socavación pueden no ser precisas.…”

Assessing flooding impact to riverine bridges: an integrated analysis

“…Scour damage is a significant concern for many bridge structures and has been extensively studied (e.g., Pregnolato et al, 2021a;Wang et al, 2017;Hung and Yau, 2017;AASHTO, 2002); the more common methods include using the HEC-18 (Arneson et al, 2012;Vardanega et al, 2021) or CIRIA scour equations (Kirby et al, 2015;HE, 2012). However, assessing scour damages is not the main focus of this paper.…”