Retrospective Analysis of Hydraulic Bridge Collapse

Montalvo, Cristopher; Cook, Wesley; Keeney, Taviana

doi:10.1061/(asce)cf.1943-5509.0001378

Cited by 21 publications

(13 citation statements)

References 12 publications

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“…Concrete Cracking Environment. Earthquakes and overloading are the main causes of concrete cracking (50,51).…”

Section: Concrete Abrasion Environmentmentioning

confidence: 99%

Recommendations for Refined Preventive Maintenance Management of Concrete Bridges in China Based on Environmental Risk Zoning

Liu

Duan³

et al. 2022

Transportation Research Record: Journal of the Transportation R

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Service environment has an important influence on the durability of concrete bridges. Environmental factors are often considered in the design stage, however, they tend to be ignored in the process of maintenance management. It is of great significance in prolonging the service life of a bridge to pay attention to the influence of the environment on the deterioration of the bridge during the preventive maintenance process. Concrete carbonation, chloride ion corrosion, sulfate corrosion, concrete cracking, concrete abrasion, and freeze–thaw damage are the main causes of decline of bridge durability. Based on these six kinds of distress, indexes of environmental zoning are proposed. For this purpose, variable weight theory is introduced into the matter-element extension model, and the comprehensive environmental risk values of various regions are calculated. The environmental risk zoning map of the concrete bridge’s location is then drawn using data visualization software (Tubiaoxiu). These maps show that the east, south, and southwest of China are the most high-risk areas for the deterioration of concrete bridges, and the validity of the results is proved by the distribution of collected bridge collapse accidents. Through the environmental risk zoning map, managers can intuitively grasp the degree of environmental risk in each region in real time. This approach could help bridge management department to implement differential management of concrete bridges in different regions, adjust bridge maintenance intervals dynamically, predict the state of bridges scientifically, and realize refined preventive maintenance management.

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“…Concrete Cracking Environment. Earthquakes and overloading are the main causes of concrete cracking (50,51).…”

Section: Concrete Abrasion Environmentmentioning

confidence: 99%

Recommendations for Refined Preventive Maintenance Management of Concrete Bridges in China Based on Environmental Risk Zoning

Liu

Duan³

et al. 2022

Transportation Research Record: Journal of the Transportation R

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“…Bridge deterioration refers to the damage of bridges under the action of natural environment and human factors, which leads to the deterioration of the durability of bridges and makes their working performance fail to meet the requirements of relevant standards and specifications [ 21 ]. The deterioration of the bridge is related to the formulation of the structural inspection plan.…”

Section: Construction Of Bridge Deterioration Prediction Modelmentioning

confidence: 99%

Study on optimization of inspection mechanism of concrete beam bridge

Liu²,

Li³

et al. 2021

PLoS ONE

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China is shifting from the stage of large-scale bridge construction to the stage of equal emphasis on the construction and maintenance of bridges. The problems of low efficiency and high cost in bridge inspection are becoming more and more prominent, which threaten people’s life safety. In this paper, the deterioration state prediction model of concrete beam bridge under Boosting DT C5.0 was established as the basis, and optimization suggestions were put forward in terms of bridge inspection standards and processes, which aims to perfect the bridge inspection mechanism, realize the fine management of the bridge and prolong the service life of the bridge. Research shows that: first, the bridge inspection standard with a single index should be improved into the bridge inspection standard with multiple indexes, so as to scientifically determine the bridges that need to be inspected and optimize the allocation of maintenance resources. Second, the bridge deterioration state prediction model is used to add a screening mechanism for the bridge in the inspection plan, which can effectively reduce the workload of bridge inspection and enhance the inspection efficiency. Third, the deterioration phenomenon of coexistence between adjacent traffic assets should be fully considered and the linkage inspection mechanism of adjacent traffic assets should be established to improve the effect of bridge inspection.

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“…Furthermore, periods of erosion and infill mean that the presence of lesssupportive soil around the base can obscure the severity of scour [3]. Hydraulic failure -failures recorded with descriptions such as hydraulic, flood, scour, tidal, and debriscaused over 55% of all bridge collapses in a 22-year period [4]. In addition, it was found that most hydraulic collapses were a result of scour-induced failure [5,6].…”

Section: Introductionmentioning

confidence: 99%

Active scour monitoring using ultrasonic time domain reflectometry of buried slender sensors

Funderburk¹,

Tran²,

Todd³

et al. 2021

Smart Mater. Struct.

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Local scour is a growing cause of bridge failure in the United States and around the world. In the next century, the effects of climate changes will make more bridges susceptible to scour failure more than ever before. This study aims to harness the spatially continuous monitoring capabilities of ultrasonic time-domain reflectometry to detect a soil interface for the purposes of scour monitoring. In this study, a long, slender plate is coupled with two flexible piezoelectric devices that propagate Lamb waves along the length of the plate to form the scour sensor. The sensor was tested for sensitivity to external pressure using metal weights, and was able to detect the position of the pressure up at a length of up to ~ 20 feet. The sensor was tested under simulated scour conditions, being buried in sand at various depths. The results show that the Lamb wave scour sensor is capable of reliably detecting a soil interface at 1 ft intervals. The scour sensor was also able to detect uncompacted soil interfaces, which is important considering the issue of scour hole refill following an extreme event.

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Retrospective Analysis of Hydraulic Bridge Collapse

Cited by 21 publications

References 12 publications

Recommendations for Refined Preventive Maintenance Management of Concrete Bridges in China Based on Environmental Risk Zoning

Recommendations for Refined Preventive Maintenance Management of Concrete Bridges in China Based on Environmental Risk Zoning

Study on optimization of inspection mechanism of concrete beam bridge

Active scour monitoring using ultrasonic time domain reflectometry of buried slender sensors

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