A5065643510- Geotechnical Engineering and Analysis
- Geotechnical Engineering and Underground Structures
- Indoor and Outdoor Localization Technologies
- Rock Mechanics and Modeling
- Antenna Design and Analysis
- Grouting, Rheology, and Soil Mechanics
- Geoscience and Mining Technology
- Structural Health Monitoring Techniques
- Millimeter-Wave Propagation and Modeling
- Civil and Geotechnical Engineering Research
- Geophysical Methods and Applications
- RFID technology advancements
- Railway Engineering and Dynamics
- Geotechnical Engineering and Soil Stabilization
- Infrastructure Maintenance and Monitoring
- Tunneling and Rock Mechanics
- Advanced Antenna and Metasurface Technologies
- Landslides and related hazards
- Transportation Safety and Impact Analysis
- Soil Moisture and Remote Sensing
- Geological Modeling and Analysis
Fuzhou University
2024
Tongji University
2018-2023
Wireless Underground Sensor Networks (WUSNs), an important part of Internet things (IoT), have many promising applications in various scenarios. Signal transmission natural soil undergoes path loss due to absorption, radiation, reflection and scattering. The variability dynamic conditions complexity signal attenuation behavior make the accurate estimation challenging. Two existing propagation models for predicting are reviewed compared. Friis model does not consider is only applicable far...
Tunnel horizontal convergence monitoring is essential to ensure the operation safety. However, only a few representative tunnel sections are chosen for due cost limitation. It difficult capture of each ring with limited measurements. Confronted this difficulty, paper proposes reconstruction method based on measurements deployed sensors. The along longitudinal direction seen as one-dimensional stationary and ergodic random field. problem then transformed into generation conditional fields....
Convergence monitoring is of great importance to evaluate the tunnel health condition. This paper introduces a real-time convergence system shield with straight joints based on wireless tilt sensors. Wireless sensors have advantages monitoring, flexibility and ease installation, no interruption operation demand inter-visibility. A model calculating horizontal from inclination for different diameter tunnels proposed. Optimal sensor measurement positions are adopted improve accuracy proposed...
There have been ever more in-situ tunnel extension projects due to the growing demand for transportation. The traditional blast scheme requires a large quantity of explosive and vibration effect is hard control. In order reduce consumption effect, an optimized non-cut was proposed applied expansion Gushan Tunnel. Refined numerical simulation adopted compare schemes. attenuation within interlaid rock mass on adjacent were studied compared. results validated by field monitoring tunnel. Both...
The enclosed civil structures pose a challenging environment for wireless communication between sensor nodes. Wireless electromagnetic (EM) signal attenuates significantly when transmitting through reinforced concrete structures. This paper simulates the attenuation plain concrete, pure steel rebar lattice and using finite element method (FEM) in Ansoft High Frequency Structure Simulator (HFSS). Jonscher model is found to be better dielectric than Debye from test results. FEM simulation of...