Review of accelerated construction of bridge piers - methods and performance

Investigating the seismic behavior of precast concrete bridge piers is crucial in the design process due to the complex stress distribution in the connecting components. To demonstrate the seismic behavior of precast concrete bridge piers with hybrid joint connections, three bridge piers were designed with a scaling ratio of 1:8 and then tested under low cyclic loading conditions. The tests involved varying shapes of steel tube connection keys as parameters. This study involved examining failure modes and crack development, as well as analyzing the hysteretic performance, deformation capacity, energy dissipation, and stiffness degradation of the specimens. Furthermore, a finite element model was developed using ABAQUS, and the validity of the modeling approach suggested in this study was confirmed through tests. The results indicate that the precast piers exhibit reduced concrete damage at the joints. The enhanced strength of the joints is attributed to the incorporation of steel tube connection keys. The circular steel tube connection key integrated into the precast bridge pier offers a superior bearing capacity, energy dissipation, and stiffness degradation compared to the cross-shaped steel tube connection key. The presence of the built-in circular steel tube connection key in the precast bridge pier suggests that it complies with the seismic structural measures and is consistent with the design principle of “strong joint and weak member”.

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Dynamic Response Analysis of Coastal Bridge Members Exposed to Water Forces and Earthquakes

Alsultani,

Karim,

Khassaf

et al. 2024

New Insights Into Reinforced Concrete Technology [Working Title]

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Reinforced concrete pile foundations are a common and efficient solution for constructing deepwater bridges that span large bodies of water, such as rivers, seas, or portions of oceans. Many of these bridges are situated in areas with significant seismic hazards. These structures are not only subjected to typical water loads, such as currents and waves but also to earthquake forces. The interaction between these water forces and the structure generates hydrodynamic forces on the submerged parts of the bridges. Thus, accurately estimating these hydrodynamic forces during earthquakes is crucial for ensuring the structural safety of deepwater bridges. This chapter aims to assess the structural response of pile foundation bridge piers when exposed to hydrodynamic forces during earthquakes, utilizing DIANA FE software and parallel computation technology. The study model incorporates the combined effects of currents, waves, and earthquakes, along with the nonlinear behavior of soil and concrete. Using Stokes’s fifth-order wave theory and Morison’s hydrodynamic pressure formula, the wave force was applied as a distributed load on the bridge’s pile foundation. The dynamic excitation characteristics of the pier under elastic conditions were analyzed, considering the influence of currents and waves.

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Review of accelerated construction of bridge piers - methods and performance

Cited by 3 publications

References 37 publications

Numerical simulation of axially loaded circular concrete-filled steel tubular short columns with localized corrosion

Numerical simulation of axially loaded circular concrete-filled steel tubular short columns with localized corrosion

Seismic Performance of Precast Concrete Bridge Piers with Built-In Steel Tube Connection Key

Dynamic Response Analysis of Coastal Bridge Members Exposed to Water Forces and Earthquakes

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