A5066350473- Landslides and related hazards
- Tree Root and Stability Studies
- Seismic Performance and Analysis
- Geotechnical Engineering and Underground Structures
- Rock Mechanics and Modeling
- Dam Engineering and Safety
- Flood Risk Assessment and Management
- Geotechnical Engineering and Soil Stabilization
- Geotechnical Engineering and Soil Mechanics
- Climate change and permafrost
- Fire effects on ecosystems
- Civil and Geotechnical Engineering Research
- Advanced Decision-Making Techniques
- Concrete Corrosion and Durability
- Technology and Security Systems
- Fire Detection and Safety Systems
- Evaluation and Optimization Models
- Numerical methods in engineering
- Railway Engineering and Dynamics
- Structural Behavior of Reinforced Concrete
- Hydrology and Sediment Transport Processes
- Traffic Prediction and Management Techniques
- Geoscience and Mining Technology
- Gait Recognition and Analysis
- Safety Warnings and Signage
Sichuan Highway Design and Research Institute
2021-2025
Southwest Jiaotong University
2010-2023
The paper proposes a three-scale binary medium-based constitutive model on the basis of meso structures and micro components to describe elasto-plastic mechanical behavior mudstone samples. Based breakage mechanism geomaterials, samples are considered as two different materials (bonded frictional elements) at mesoscales. From scales, given similar but mineralogy composition porosity bonded elements microscale, well their separate characteristics, homogenization methods adopted obtain...
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Abstract Brake failure and poor braking are significant causes of traffic accidents. To establish the longitudinal slope gradient design criteria ensuring expressway operational safety, this study investigates thresholds under two modes engine‐assisted exhaust‐assisted at four truck gears through theoretical calculations. Real vehicle tests on Ya'an‐Xichang Expressway were conducted to capture driver heart rate characteristics. The threshold that ensures psychological safety was determined...
Predictive displacement models (PDMs) based on the Newmark sliding block method have been widely applied in earthquake-induced landslide hazard assessment (ELHA). Pulse-like ground motions (PLGMs) can cause significant structural damage. In this study, four PDMs that consider probability of occurrence PLGMs (PP) were created for strike-slip and non-strike-slip events. The results demonstrate model with PP has greater accuracy events than without PP, however, effect may be disregarded This...
Unmanned aerial vehicles (UAVs) have made significant contributions to landslide emergency response operations due their precise and flexible imaging capabilities. However, the conventional workflow of generating orthophotos from UAV imagery subsequent interpretation often exceeds critical 72-hour rescue window. To address this challenge, paper presents a onboard extraction method for original images utilizing convolutional neural network (CNN). Given abundance overlapping images, CNN is...
A real-world driving experiment was performed in the Wen-Ma section of G4217 Rong-Chang Freeway situated Sichuan Province to investigate impact law pupil diameter drivers tunnel groups on mountainous freeway. The eye-movement data were collected, and percentage variable (PPDV) used as a visual characteristic index. analysis overall change PPDV experimental sections demonstrated that differed significantly between nontunnel single sections. Subsequently, related model for length connecting...
In seasonally frozen soil, soil sometimes is affected by freeze-thaw cycles and root systems. order to study its mechanical characteristics, a series of consolidation drained triaxial tests under different confining pressures (25, 50, 100, 200 kPa), (N = 0, 1, 5, 15) root-containing conditions (r 3) were carried out. The test results show that the specimens exhibit strain softening behavior volumetric dilatancy phenomena shear failure lower pressure, hardening contraction, bulging higher...
High risk of braking easily causes more safety accidents. In this paper, the driving experiments on G350 Gengda‐Yingxiu section containing continuous downhill tunnel group. Three‐axle trucks under standard load and overload conditions were considered. The research proposes a method for ensuring safe truck sections mountain roads based rise in brake drum temperature. study collects data temperature duration from an experimental vehicle coupling action human‐vehicle‐road‐environment. Through...
<p>Viscose debris flows always move in the manner of intermittent surges and show obvious fluctuation. In traditional design flow control engineering, impact single surge has on check dams was only factor to be taken into consideration. Whereas stability variation law under neglected. On basis observation material from Jiangjia Gully (JJG), we initially analysis fluctuating decaying characteristics surges. Results indicate that exhibit finally decay a power-law form, showing...
Based on the analysis of forces acted small-diameter steel pipe piles, an analytical model plane rigid frame considering pile-soil interaction is presented. Soil between group piles simulated by a series horizontal springs, and computational formulas for inner force displacement are deduced basis Winkler elastic foundation beam theory. A comparison results computed our computation methods field data obtained at site slope reinforcement made, which shows that both them coincide well....
Abstract In seasonally frozen soil, soil sometimes is affected by freeze-thaw cycles and root systems. order to study its mechanical characteristics, a series of consolidation drained triaxial tests under different confining pressures (25,50,100,200 kPa), (N = 0,1,5,15) root-containing conditions (r 0,1,3) were carried out. The test results show that the specimens exhibit strain softening behavior volumetric dilatancy phenomena shear failure lower pressure, hardening contraction, bulging...
The paper firstly introduced distribution and adaptability of the debris flow control work in Sichuan.And then it evaluate vulnerability Interception Dam according to development characteristics channel, scope purpose engineering measures. On basis generation flow, systematically analyzed dam location, its condition, rainfall earthquake, overall five first-level factors corresponding eight second-level factors, formed a assessment system project evaluated by using analytic hierarchy process...