A5033341372- Structural Behavior of Reinforced Concrete
- Innovative concrete reinforcement materials
- Concrete Corrosion and Durability
- Infrastructure Maintenance and Monitoring
- Fatigue and fracture mechanics
- Structural Response to Dynamic Loads
- Structural Engineering and Vibration Analysis
- Structural Load-Bearing Analysis
- Seismic Performance and Analysis
- Innovations in Concrete and Construction Materials
- Fluid Dynamics and Vibration Analysis
- Structural Health Monitoring Techniques
- Wind and Air Flow Studies
- Numerical methods in engineering
- Railway Engineering and Dynamics
- Aeolian processes and effects
- Image and Object Detection Techniques
- Ultrasonics and Acoustic Wave Propagation
- Geotechnical Engineering and Soil Stabilization
- Advanced ceramic materials synthesis
- Non-Destructive Testing Techniques
- Aerodynamics and Fluid Dynamics Research
- Geophysical Methods and Applications
- Industrial Vision Systems and Defect Detection
- Wind Energy Research and Development
Central South University
2023-2024
Hokkaido University
2017-2022
Visual-Spatial Systems has become increasingly essential in concrete crack inspection. However, existing methods often lacks adaptability to diverse scenarios, exhibits limited robustness image-based approaches, and struggles with curved or complex geometries. To address these limitations, an innovative framework for two-dimensional (2D) detection, three-dimensional (3D) reconstruction, 3D automatic measurement was proposed by integrating computer vision technologies multi-modal Simultaneous...
Flow-induced vibration (FIV) of twin square cylinders in a tandem arrangement was numerically investigated at Reynolds numbers 200 and gap L/D = 2.0, 4.0, 6.0 (D is the side length cylinders). Fluid-structure-coupled Koopman mode analysis method developed to synchronously identify coherence flow structural modes. Then, energy transfer between modes analyzed uncover underlying mechanism FIV. The results showed that 2.0 only soft lock-in vortex-induced (VIV) observed. oscillating amplitude for...
In the last few decades, a punching shear failure model has been commonly observed in reinforced concrete (RC) bridge deck slabs around world, which makes studies on fatigue performance of RC an urgency. This paper focuses critical cracks, and analytical life prediction method developed for that fail mode under moving wheel loads. proposed method, crack growth is assumed to be as result bridging stress degradation rebar-concrete interface bond-slip degradation. With obtained growths...
A method for estimating the rebar force crossing a crack under model I loading in RC beams using mouth opening displacement (CMOD) is proposed based on fracture mechanics accounting bond slip at rebar-concrete interface.In method, CMOD regarded as consequence of combined action applied loads, bridging forces and slip.The due to these three contributors are estimated through an integral transformation model.Since included, tension stiffness effect considered implicitly.Theoretically, inverse...
Due to repetitive traffic loadings and environmental attacks, reinforced concrete (RC) bridge deck slabs are suffering from severe degradation, which makes structural repairing an urgency. In this study, the fatigue performance of RC deck repairing technique using ultra-high fiber reinforcement (UHPFRC) overlay is assessed experimentally with a wheel-type loading set-up as well analytically based on finite element method (FEM) a crack bridging degradation concept. In both approaches,...
In this study, an orthotropic steel bridge deck overlaid with ultra-high-performance fiber-reinforced concrete (UHPFRC) is investigated using the finite element analysis. The composite which undergone moving-wheel load examined under environmental surface water conditions. Two phases, i.e., Phases 1 and 2, are considered for material model of UHPFRC stagnant water. Phase 1, mechanical recoveries tensile strength reloading stiffness cracked caused by autogenous self-healing behavior. load,...
Even though UHPFRC has been extensively exploited in infrastructures owing to its exellent mechanical properties, the material fatigue behaviors are still not clear as related research is very limited. In this study, characteristics of were investigated using a four-point bending experiment. To determine load conditions, static tests conducted under different loading speeds and at ages before, during, after tests. The obtained properties exhibited an apparent rate-dependent long duration...
This study proposes approximate boundary conditions for a panel reinforced concrete (RC) slab to simulate the fatigue behaviors of real bridge RC slab. To validate approach, analysis is conducted using finite element method (FEM) based numerical model with bridging stress degradation concept. Both proposed conditions, and those that have been typically employed in past studies, are used. The results demonstrate experiences same bending moment distribution deformations around loading...
In Japan, RC bridges slabs constructed during the high economic growth period are suffering from severe deteriorate due to fatigue. cold and snowy regions, in addition fatigue, deterioration is accelerated aggravated simultaneously by freeze-thaw cycles water penetration simultaneously. Hence, this study, aiming at investigating combined action, three beams were artificially damaged on top surface introducing expansion agents simulate cycle damages beforehand, then subjected moving wheel...
Considering the wind barriers induced aerodynamic characteristic variations of both bridge deck and trains, this paper studies effects on safety stability trains as they run through an urban rail transit cable-stayed bridge which tends to be more vulnerable due its relatively low stiffness lightweight. For equipped with different characteristics, coefficients decks are obtained from wind tunnel test firstly. And then, space vibration equations wind-train-bridge system established...