Abstract
Vibratory compaction of bridge deck pavement impacts the structural integrity of bridges to certain degrees. In this study, we analyzed the dynamic response of different types of concrete-beam bridges (continuous beam and simply supported beam) with different cross-sectional designs (T-beam and hollow-slab beam) under vibratory compaction of bridge deck asphalt pavement. The dynamic response patterns of the dynamic deformation and acceleration of bridges under pavement compaction were obtained by performing a series of field experiments and a three-dimensional finite element simulation. Based on the finite element model, the dynamic responses of bridge structures with different spans and cross-sectional designs under different working conditions of vibratory compaction were analyzed. The use of different vibration parameters for different bridge structures was proposed to safeguard their structural safety and reliability.
Highlights
Bridge deck pavement is the protective layer paved over bridge deck slabs to prevent the direct wear of slabs by vehicle wheels, diffuse the load of vehicles, and provide a flat but skid-resistant surface for vehicles to drive on [1, 2]
In an investigation of the effect of the compaction efficiency and speed of the vibratory roller on the degree of compaction, due to the strong force between the roller compactor and the bridge structure during the pavement compaction process, the bridge structure will generate a greater dynamic response than the normal moving load, and response caused by the different types of the roller will be different, too
The dynamic response signals during the asphalt pavement compaction were collected using the DH5922 dynamic signal analysis system, with band-pass filtering applied to the initial dynamic signals using the system's built-in digital filter
Summary
Bridge deck pavement is the protective layer paved over bridge deck slabs to prevent the direct wear of slabs by vehicle wheels, diffuse the load of vehicles, and provide a flat but skid-resistant surface for vehicles to drive on [1, 2]. In an investigation of the effect of the compaction efficiency and speed of the vibratory roller on the degree of compaction, due to the strong force between the roller compactor and the bridge structure during the pavement compaction process, the bridge structure will generate a greater dynamic response than the normal moving load, and response caused by the different types of the roller will be different, too. Wang et al [21] comparatively analyzed the dynamic response of a continuous beam bridge under static, vibratory, and oscillatory compaction by performing a field experiment of vibration acceleration (natural frequency), stress (strain), and displacement (deflection) based on control indicators for the effects of oscillatory compaction on bridge structure. The dynamic impact of vibratory rolling on the structure of bridges with different spans and cross-sectional designs under different rolling conditions was analyzed, by employing the finite element method and performing a series of field experiments
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