Vibration response law of existing buildings affected by subway tunnel boring machine excavation

Wu, Ke; Yang, Zheng; Li, Shu-Chen; Sun, Jie; Han, Yucong; Hao, Dongxue

doi:10.1016/j.tust.2021.104318

Cited by 15 publications

(6 citation statements)

References 31 publications

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“…Twenty-seven low-frequency vibration sensors (JX941) were deployed on the surface and underground to monitor the internal vibration of the ground during shield construction, as shown in Figure 8. Wu et al [81] installed vibration sensors on the tube sheet to obtain the vibration signals during the shield construction. And the threedimensional fully coupled dynamic model (3DFDM) of tunnel-hard rock-construction was established.…”

Section: Monitoring Outside the Shieldmentioning

confidence: 99%

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Yang,

Fang,

Wang

et al. 2024

Buildings

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With the rapid development of metro construction, shield machines inevitably have to traverse a variety of complex geological conditions, leading to the frequent occurrence of geological disasters, equipment failures, building vibration and other problems. Vibration, as an important feature of the shield tunneling process, has received more and more attention in recent years. This paper summarizes the relevant research progress of vibration monitoring during shield construction from 2015 to 2023. It analyzes the shield vibration generation mechanism, monitoring methods and application areas. Firstly, the shield vibration type is divided into mechanical vibration triggered by internal excitation and forced vibration triggered by external excitation, and the principles of vibration generated by shield main bearing, gearbox and disc cutter are discussed. Then, the commonly used vibration monitoring methods are outlined according to the installation location of the sensors (inside and outside of the shield). Finally, the applications of vibration signals in the diagnosis of shield faults, the identification of geologic conditions, and the evaluation of the current status of the interference with the buildings are summarized. This paper discusses the development trend of vibration monitoring during shield tunneling based on the current research situation and the current technology level, which provides valuable insights to enhance the safety and intelligence of shield construction.

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Section: Monitoring Outside the Shieldmentioning

confidence: 99%

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Yang,

Fang,

Wang

et al. 2024

Buildings

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“…In comparison to the abovementioned vibration sources, the vibration induced by the shield-tunneling process has a wider frequency band and a longer duration. Wu et al [17] used a numerical model to study the TBM excavation process and concluded that the distance affected by vibration during hard rock tunnel construction is about 9 m, and the existence…”

Section: Introductionmentioning

confidence: 99%

Influence and the Control of Shield Tunneling on Ancient Tower Vibration

Liang,

Xu,

Zhang

et al. 2024

Advances in Civil Engineering

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In recent years, to effectively mitigate the issue of urban traffic congestion, tunnels have become widely used new type of road. However, when the soil layer is excavated and disturbed, the resulting vibration affects the safety of the buildings above it, especially for ancient buildings that are very sensitive to vibrations. Taking the White Tower in Hangzhou as an example, in this paper, the vibration response propagation of large-diameter shield tunnel excavation to adjacent ancient towers is studied through field measurements. The vibration response of the unexcavated south line tunnel is predicted by using 3D numerical analysis software, and the optimal construction parameters are obtained. The study found that the frequency domain component of the White Tower bedrock vibration caused by shield tunneling is mainly 5–20 Hz, and the vibration response attenuates significantly beyond 40 m. Further, reducing the propulsive force can reduce the vibration response of the White Tower; therefore, controlling the propulsion and reducing the tunneling velocity can reduce the vibration response.

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“…During the construction and operation of urban underground projects, various dynamic loads including blasting vibration [1][2][3][4][5], train running vibration [6][7][8][9][10][11][12], and mechanical vibration [13][14][15] will inevitably be imposed on them. These loads can initiate and propagate cracks in the surrounding rock, posing a significant threat to the safety of essential structures such as basements, infrastructure, municipal pipelines, and other urban facilities.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Dynamic Tensile Mechanical Behavior and Fracture Mechanical Characteristics of Sandstone with a Single Prefabricated Fissure

Wu,

Du,

Wang

et al. 2024

Advances in Civil Engineering

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The structural stability of engineering rock mass under dynamic disturbance is directly associated with the fracture mechanics properties in engineering practice. Fully understanding the rock’s fracture mechanical behavior and crack evolution caused by stress concentration at the crack tip in engineering rock mass under dynamic load can offer useful insight into the rock’s dynamic fracture mechanism. A dynamic test using split-Hopkinson pressure bar (SHPB) test system was performed on a single prefabricated fissure sandstone centrally cracked Brazilian disk (CCBD) specimens. Based on the theory of fracture mechanics and one-dimensional stress wave theory, the dynamic crack initiation criterion of CCBD specimen is proposed, and the regression model of sandstone’s dynamic fracture toughness under the coupling effect of fissure angle and strain rate is established by using response surface methodology (RSM). The influence of strain rate and fissure angle on stress wave characteristics, dynamic tensile mechanical behavior, and fracture mechanics characteristic was investigated in this study. The findings demonstrate that: (1) The fissure angle plays a pivotal role in determining the failure mode of sandstone. As the fissure angle increases, three distinct failure modes emerge in the sandstone specimens, while variations in strain rate have minimal impact on the fracture mode of these specimens. (2) Alterations in the fissure angle result in changes to the waveform of transmitted waves. When the fissure angle is below 30°, the transmitted wave exhibits “double peak” characteristics; when it exceeds 30°, a “single peak” waveform is observed. This phenomenon can be attributed to diffraction principles governing incident waves. (3) When the impact pressure is 0.2 MPa, the peak load initially exhibits an increase followed by a decrease, with the peak load reaching its maximum at a fracture angle of 60°; when the impact pressures are 0.3 and 0.5 MPa, there exists a negative correlation between the peak load and the fissure angle. (4) The influence of strain rate on sandstone’s fracture resistance is predominant, with alterations in fissure angle exerting an auxiliary effect on this property. The research results can provide a theoretical and experimental basis for dynamic disaster prevention in urban underground space.

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Vibration response law of existing buildings affected by subway tunnel boring machine excavation

Cited by 15 publications

References 31 publications

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Influence and the Control of Shield Tunneling on Ancient Tower Vibration

Experimental Study on Dynamic Tensile Mechanical Behavior and Fracture Mechanical Characteristics of Sandstone with a Single Prefabricated Fissure

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