Progressive bridge collapse analysis under both scour and floods by coupling simulation in structural and hydraulic fields. Part Ⅰ: Numerical solver

Zhang, Rongzhao; Xiong, Wen; Ma, Xiaolong; Cai, Cunjin

doi:10.1016/j.oceaneng.2023.113849

Cited by 8 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specific deformation of the riverbed can be understood through a riverbed scour model. Previous studies have struggled to accurately replicate actual conditions when simulating scour patterns 67,68 . Despite researchers trying various simplification methods during soil boundary condition transformations, many challenges remain, making this a critical issue to address.…”

Section: Analysis Of Scour Pit Development Under Extreme Hydraulic Co...mentioning

confidence: 99%

Study on Scour Characteristics of a Shallow Foundation Bridge

Fan,

Li,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

Bridges with shallow foundations are highly susceptible to flood scouring due to their limited embedment depth and small contact area between the soil and foundation. This can lead to foundation voids, posing a serious threat to bridge safety. To prevent and mitigate scouring risks, this paper investigates the riverbed scouring characteristics of shallow foundation bridges under different hydrological conditions.The study found that under high water levels and flow velocities, scour depth significantly increased.Under extreme hydrological conditions, a horseshoe vortex forms at the base of the front end of the bridge pier, causing scour pits on both sides of the upstream face of the foundation, which is the main cause of foundation voids that first appear at 2580 seconds with a maximum scour depth of -2.51 meters and a void area of 0.5%, continuing to increase over time.Based on simulated scouring data, this study proposes a method for converting boundary conditions from a scouring model to a mechanical model. This method utilizes point cloud reverse engineering technology to generate a riverbed surface from the three-dimensional coordinate matrix of the boundary and import it into the structural analysis field. Hydraulic effects are calculated using a CFD model and transferred to the structural domain through fluid-structure interaction technology, achieving multi-physical field coupling among water flow, soil, and structure. This method addresses the current limitations in simulating complex scouring forms in bridge flood damage research, providing reliable technical support for subsequent studies on the damage behavior of shallow foundation bridges under flood scouring conditions.

show abstract

Section: Analysis Of Scour Pit Development Under Extreme Hydraulic Co...mentioning

confidence: 99%

Study on Scour Characteristics of a Shallow Foundation Bridge

Fan,

Li,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In another study, a discontinuum-based micro-modeling approach was used to explicitly explore potential collapse mechanisms based on the collapse of the Morandi Bridge in Genoa, Italy, on 14 August 2018 [27]. Zhang et al [28] proposed a progressive collapse analysis of bridge structures, which utilizes a coupled simulation approach in both the structural and hydraulic fields to consider the threats of scour and floods.…”

Section: Introductionmentioning

confidence: 99%

The Sustainable Development of Bridges in China: Collapse Cause Analysis, Existing Management Dilemmas and Potential Solutions

Tang,

Huang

2024

Buildings

View full text Add to dashboard Cite

The construction of sustainable bridge projects has become a global mission and challenge in the 21st century. Unfortunately, there has been a rise in bridge collapse incidents due to various factors in recent years both during the construction and service phases. These incidents have resulted in significant loss of life and property damage, exacerbating the five sustainable development issues faced by bridge engineering: natural, resource, environmental, social, and economic factors. As a result, the prevention and resolution of bridge collapse accidents have garnered attention from professionals, research institutions, and government departments, making it a prominent research area. In line with the sustainable development concept of bridge engineering, this article classifies the causes of bridge collapses into two categories: those occurring during the construction phase and those happening during the service phase; the latter includes lack of inspection, maintenance and management, external natural factors, and human factors. Furthermore, this article thoroughly examines the existing national management framework, identifying the dilemmas that hinder its effectiveness in regulating bridge collapse prevention. Finally, several effective suggestions are proposed for the prevention of bridge collapse incidents. These recommendations aim to motivate governments, project owners, designers, constructors, managers, and users to actively develop and promote high-quality sustainable bridges.

show abstract

Fragility evaluation of bridge shallow foundation piers under floods by coupling simulation in structural and hydraulic fields

Zhang,

Xiong,

et al. 2024

Ocean Engineering

View full text Add to dashboard Cite

Progressive bridge collapse analysis under both scour and floods by coupling simulation in structural and hydraulic fields. Part Ⅰ: Numerical solver

Cited by 8 publications

References 27 publications

Study on Scour Characteristics of a Shallow Foundation Bridge

Study on Scour Characteristics of a Shallow Foundation Bridge

The Sustainable Development of Bridges in China: Collapse Cause Analysis, Existing Management Dilemmas and Potential Solutions

Fragility evaluation of bridge shallow foundation piers under floods by coupling simulation in structural and hydraulic fields

Contact Info

Product

Resources

About