Investigation of the Progressive Collapse in a Suspension Bridge Under the Explosive Load

Farahmand‐Tabar, Salar; Barghian, Majid; Vahabzadeh, Majid

doi:10.1007/s13296-019-00263-x

Cited by 18 publications

(5 citation statements)

References 17 publications

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“…Different researchers have studied the load effect of blasts on bridges. Farahmand-Tabar [86] modeled and analyzed a typical suspension bridge under explosion load. Carrillo et al [87] presented and discussed the officially recorded bridge collapse incidents in Colombia by blast loading brought about by terrorist attacks from 1994 to 2014 and analyzed the economic, social, and political impact resulting from the collapse of the bridge located on the Riecito River in Caquetá.…”

Section: External Human Factorsmentioning

confidence: 99%

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

Tang,

Huang

2024

Buildings

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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.

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Section: External Human Factorsmentioning

confidence: 99%

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

Tang,

Huang

2024

Buildings

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“…Blasts that occur on bridges are unpredictable and-on both domestic and overseas bridges-have been caused by explosions from terrorist attacks, vehicle accidents, and other events (e.g., wars). When conducting blast analysis for bridges, most previous researchers have used random blast loads, rather than setting separate blast or vehicle explosion scenarios [14][15][16][17]22]. This study defined blast accident scenarios in terms of vehicle-based terrorist attacks, considering the current likelihood of war-related blast accidents to be low.…”

Section: Blast Scenariomentioning

confidence: 99%

“…Pan et al [21] defined several scenarios of human-installed explosives and blast accidents caused by trucks, and they analyzed blast load responses for a slab-on-girder, box-girder, and long-span cable-stayed bridges. Farahmand-Tabar et al [22] evaluated the risks of a progressive collapse and performance degradation in suspension bridges by using a 2D suspension bridge model.…”

Section: Introductionmentioning

confidence: 99%

“…To evaluate the performance of cable-stayed bridges under different blast loads, the aforementioned studies analyzed the overall behaviors and damage characteristics of bridges by modeling either the deck and pylon only or the entire structure [14][15][16][17][18][19][20][21][22]. Furthermore, when setting the blast loads, they often chose randomized blast loads, rather than setting them according to specific scenarios [14][15][16][17]22]. Most of the existing studies have focused on the behaviors of entire bridges, and very few cases have analyzed the damage types or levels of major components (e.g., the cables) according to different scenarios.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis-Based Blast Resistance Performance Assessment of Cable-Stayed Bridge Components Subjected to Blast Loads

2020

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Cable-stayed bridges are infrastructure facilities of a highly public nature; therefore, it is essential to ensure operational safety and prompt response in the event of a collapse or damage, which are caused by natural and social disasters. Among social disasters, blast accidents can occur in cable-stayed bridges as a result of explosions produced by vehicle collisions or terrorist attacks; this can lead to the degradation in their structural performances and subsequent collapse. In this research, a procedure to assess structural blast-resistance performance is suggested based on a numerical analysis approach, and the feasibility of the procedure is demonstrated by performing an example assessment. The suggested procedure includes (1) selection of major structural components that severely affect the global structural behavior, (2) set-up blast hazard scenarios consisting of various blast levels and locations, and (3) assessment of the components using numerical blast simulation. By performing an example assessment, the critical blast level for each component could be determined and the blast location that affects the considering components the most severely could be found as well. The scenario-based assessment process employed in this study is expected to facilitate the evaluation of bridge structures under blasts in both existing bridges and future designs.

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“…In recent years, there have been many studies on the maneuverability of such beams in complex environments [7][8][9]. In particular, with the development of computer technology, more and more scholars have begun to use the finite element method to simulate the structural response of bridges, and numerical simulations have also been shown to be effective in predicting structural responses [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of a Box Multistage Stiffened Beam under the Coupling of Vehicle Load and Air Blast Load

Ma,

Gao,

et al. 2023

Buildings

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If a bridge is subjected to a blast load when there is vehicle traffic, not only its own safety is threatened, but it can also lead to damage to vehicles. In addition, the coupling of a vehicle load and an explosion load may further aggravate the impact of an explosion. To understand the coupling relationship between the two kinds of loads on a bridge, a static load was applied on the bridge using the impact coefficient while a blast load was applied on the outside of the bridge. A numerical simulation was also used to further study the coupling effect of the vehicle load and the explosion load. The results showed that the vehicle load could effectively limit the vertical deformation. The numerical model was accurate in predicting the response process of the stiffened beam. With the coupling of the vehicle load, the equivalent plastic strain of the box multistage stiffened beam was mainly concentrated at the hinge and decreased when the blast loading remained constant. The transverse anti-blast performance of the stiffened beam was mainly provided by the bridge web and the diaphragm under the coupling effect of the vehicle load and the blasting load, but the function of the diaphragm was weakened. Additionally, the hinge used as a connector was able to directly affect the bearing capacity of the bridge. Even if the hinge was only slightly damaged, it could cause the bridge to enter the failure stage, meaning that the strength of the hinge must be greater than that of the bridge.

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Investigation of the Progressive Collapse in a Suspension Bridge Under the Explosive Load

Cited by 18 publications

References 17 publications

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

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

Numerical Analysis-Based Blast Resistance Performance Assessment of Cable-Stayed Bridge Components Subjected to Blast Loads

Dynamic Response of a Box Multistage Stiffened Beam under the Coupling of Vehicle Load and Air Blast Load

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