Temperature tracer method in structural health monitoring: A review

He, Fengfei; Chen, Jiang; Li, Chaozheng; Xiong, Feng

doi:10.1016/j.measurement.2022.111608

Cited by 10 publications

(4 citation statements)

References 115 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When fire occurs inside tunnels, it generally provokes structural health problems. Indeed, fire hazards are major issues affecting the structures of tunnels [105,106], and habitually engender huge damage such as casualties and financial losses [101,[105][106][107][108][109][110][111]. These huge consequences of fires are mainly due to the typical compact space and complex structures of tunnels [108,112].…”

Section: The Need For Fire Monitoring In Deep Rock Tunnelsmentioning

confidence: 99%

“…These huge consequences of fires are mainly due to the typical compact space and complex structures of tunnels [108,112]. The effects of fires on the structure of tunnels, and in particular on the linings are well recognized [101,103,106,111,[113][114][115][116], and spalling damage is mostly the predominant process of failure in concrete structures [111,117]. As examples, serious damage has been recorded in north section of the Central Park North-110th Street Subway station of Manhattan owing to a fire that occurred on 27 March 2020 [105].…”

Section: The Need For Fire Monitoring In Deep Rock Tunnelsmentioning

confidence: 99%

“…According to Hua et al [111], based on temperature level (T), fire can mainly spread in three ways: low-intensity (T<300℃) which is generally not dangerous to tunnel structures, intermediate intensity which can damage the tunnel lining at certain extent, and high intensity (T≥1200℃) which usually cause severe damage to tunnel lining. To prevent fire, tunnels should be equipped with reliable and suitable monitoring systems.…”

Section: The Need For Fire Monitoring In Deep Rock Tunnelsmentioning

confidence: 99%

See 2 more Smart Citations

Towards Long-Term Monitoring of the Structural Health of Deep Rock Tunnels with Remote Sensing Techniques

Frenelus,

Peng

2023

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

Due to the substantial need to continuously ensure safe excavations and sustainable operation of deep engineering structures, structural health monitoring based on remote sensing techniques has become a prominent research topic in this field. Indeed, throughout their lifetime, deep tunnels are usually exposed to many complex situations which inevitably affect their structural health. Therefore, appropriate and effective monitoring systems are required to provide real-time information that can be used as a true basis for efficient and timely decision-making. Since sensors are at the heart of any monitoring system, their selection and conception for deep rock tunnels necessitates special attention. This work identifies and describes relevant structural health problems of deep rock tunnels and the applicability of sensors employed in monitoring systems, based on in-depth searches performed on pertinent research. The outcomes and challenges of monitoring are discussed as well. Results show that over time, deep rock tunnels suffer several typical structural diseases namely degradation of the excavation damaged areas, corrosion of rock bolts and cable bolts, cracks, fractures and strains in secondary lining, groundwater leaks in secondary lining, convergence deformation and damage provoked by the triggering of fires. Various types of remote sensors are deployed to monitor such diseases. For deep rock tunnels, it is suggested to adopt comprehensive monitoring systems with adaptive and robust sensors for their reliable and long-lasting performance.

show abstract

Section: The Need For Fire Monitoring In Deep Rock Tunnelsmentioning

confidence: 99%

Section: The Need For Fire Monitoring In Deep Rock Tunnelsmentioning

confidence: 99%

Section: The Need For Fire Monitoring In Deep Rock Tunnelsmentioning

confidence: 99%

See 1 more Smart Citation

Towards Long-Term Monitoring of the Structural Health of Deep Rock Tunnels with Remote Sensing Techniques

Frenelus,

Peng

2023

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

show abstract

“…Due to the special properties of the substances they carry, e.g., the flammability of natural gas, the tunnels are usually faced with a high risk of fire [2]. Since the tunnel is a semi-closed, long and narrow space, the fire can spread much faster and is much more difficult to locate and fight [3]. In fact, compared with other types of fires, tunnel fires are far more complex and generally cause more damage [4] than other hazards [5].…”

Section: Introductionmentioning

confidence: 99%

Risk and Energy Based Optimization for Fire Monitoring System in Utility Tunnel Using Cellular Automata

Zhang,

Bai,

Diao

et al. 2024

Sustainability

View full text Add to dashboard Cite

Fire is one of the biggest threats to the safety of utility tunnels, and establishing camera-based monitoring systems is conducive to early fire finding and better understanding of the evolution of tunnel fires. However, conventional monitoring systems are being faced with the challenge of high energy consumption. In this paper, the camera operation in a utility tunnel was optimized considering both fire risk and energy consumption. Three design variables were investigated, namely the camera sight, the number of cameras in simultaneous operation, and the duration of camera operation. Cellular automata were used as a simple but effective method to simulate the spread of fire in a utility tunnel. Results show that as the number of cameras in simultaneous operation increases, the probability of fire capture also increases, but the energy consumption decreases. A shorter duration of camera operation can lead to a higher probability of fire capture, and meanwhile, lower energy consumption. For the duration of camera operation shorter than or equal to the allowable time, the probability of fire capture is significantly higher than that for the duration longer than the allowable time. Increasing the camera sight will significantly increase the probability of fire capture and lower the total energy consumption when a blind monitoring area exists. The total energy consumption of a camera-based monitoring system roughly satisfies hyperbolic correlation with the duration of camera operation, while the probability of fire capture can be predicted based on the number of cameras in simultaneous operation through a power model. The optimal design for the modeled tunnel section is two cameras in simultaneous operation with a tangent monitoring area. The duration of camera operation should be as short as possible, at least shorter than the allowable time. The study is expected to provide a reference for the sustainable design of energy-saving utility tunnels with lower fire risk.

show abstract

Crack detection for wading-concrete structures using water irrigation and electric heating

Chen

Zeng

Luo

et al. 2023

Front. Struct. Civ. Eng.

View full text Add to dashboard Cite

Temperature tracer method in structural health monitoring: A review

Cited by 10 publications

References 115 publications

Towards Long-Term Monitoring of the Structural Health of Deep Rock Tunnels with Remote Sensing Techniques

Towards Long-Term Monitoring of the Structural Health of Deep Rock Tunnels with Remote Sensing Techniques

Risk and Energy Based Optimization for Fire Monitoring System in Utility Tunnel Using Cellular Automata

Crack detection for wading-concrete structures using water irrigation and electric heating

Contact Info

Product

Resources

About