Evaluation of Flood-Resistant Capacity of Scoured Bridges

Ko, Yung Yen; Chiou, Jiunn-Shyang; Tsai, Yu Lin; Chen, Cheng Hsing; Wang, Helsin; Wang, Chung Yue

doi:10.1061/(asce)cf.1943-5509.0000381

Cited by 20 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equation 5is derived based on experiments [25]. erefore, the following correction factors are used to account for adjustments: where F D ′ is the lateral flood force after being corrected by formula (6). e parameters k 1 , k 2 , k 3 , k 4 , and k 5 express the impact and influence of the sediment, the longitudinal slope of the watercourse, the slope of the trench, the flood frequency, and the flood direction, respectively.…”

Section: Concrete Bridge Pavementmentioning

confidence: 99%

“…Witzany and Cejka [5] and Ghorbani [1] investigated the erosion and the structural damage connected to floods by comparing several event scenarios. Ko et al [6] proposed a nonlinear quasi-static analysis procedure for the evaluation of flood-resistant capacity of scoured bridges. Recently, Qeshta [7] proposed a comprehensive vulnerability and resilience assessment method for bridges under extreme wave hazards.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on Flooding‐Resistant Performance of Integral Abutment and Jointless Bridge

Easa

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

Bridge washouts connected to flood events are deemed one of the main reasons for structural collapse. Compared to traditional continuous jointed bridges, integral abutment and jointless bridges (IAJBs) have better lateral stability because there are no expansion devices. The mechanical performance of Shangban IAJ bridge, located in Fujian, China, is thoroughly investigated by Finite Element Analysis (FEA). The numerical model is created and validated based on experimental results obtained from static load tests performed on the bridge. A detailed parametric analysis is carried out to assess the correlation between the flood-resistant performance and a number of parameters: skew angle, water-blocking area, span number, pile section geometry, and abutment height. Except for the abutment height, other parameters significantly affect the bridge performance. Furthermore, the change in the span number has a meaningful impact only when fewer than four spans are modeled. Finally, pushover analyses estimate the maximum transverse displacement and the sequence of plastic hinge creation as well as the mechanical behaviour of the structure under lateral flood loads. The analysis results show that IAJBs have better flooding-resistant performance than conventional jointed bridges.

show abstract

Section: Concrete Bridge Pavementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on Flooding‐Resistant Performance of Integral Abutment and Jointless Bridge

Easa

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…New bridges usually have deep foundations, making them less vulnerable and hence more resilient to scour. However, even for these bridges, the foundation scour may result in changes of the boundary conditions, which modify their global stiffness and eventually decrease their capability to withstand both vertical and lateral loadings [11].…”

Section: Introductionmentioning

confidence: 99%

Field tests and numerical analysis of the effects of scour on a full-scale soil–foundation–structural system

Tubaldi

Antonopoulos

Mitoulis³

et al. 2022

J Civil Struct Health Monit

View full text Add to dashboard Cite

Scour is the prevailing cause of bridge failure worldwide, leading not only to traffic disruption, but also to social and economic losses and even to casualties. Many vibration-based monitoring techniques have been proposed for identifying the scour location and extent, based on the evaluation of the changes of the bridge modal properties due to scour. This study describes the experimental and numerical research carried out to investigate the effects of scour on the dynamic properties of structures with shallow foundations. Although these are the most vulnerable ones, they have received less attention compared to structures founded on pile foundations. To fill some existing knowledge gaps, field experiments were carried out on EuroProteas, a structural prototype with shallow foundation that was subjected to increasing levels of scour. The changes of the dynamic properties of the system are evaluated by postprocessing the ambient vibration recordings and by developing various models of the soil–foundation–structural system with different descriptions of the soil–structure interaction problem. The study results shed light on the effects of scour on systems with shallow foundations and on the accuracy of alternative modelling approaches. They are presented here to inform the development and validation of vibration-based techniques and modelling strategies for bridge scour identification.

show abstract

“…Thus, a bridge that is subjected to scour becomes vulnerable in floods. For example, a large number of bridges in Taiwan have been significantly damaged due to the combined effects of scour and flow-induced loads since 2000 [3]. The damage includes tilted and tipped-over piers, dropped superstructures, pier settlements, and partial and complete collapses.…”

Section: Introductionmentioning

confidence: 99%