Ground Vibration Test and Dynamic Response of Horseshoe-shaped Pipeline During Tunnel Blasting Excavation in Pebbly Sandy Soil

Guan, Xiaolan; Wang, Xuchun; Zhu, Zhen; Zhang, Liang; Fu, Hongxian

doi:10.1007/s10706-020-01249-x

Cited by 24 publications

(5 citation statements)

References 11 publications

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“…In many countries, the influence of the main vibration frequency of the blasting stress wave is considered during the formulation of the Blasting Safety Regulations. Previous studies indicated that the main vibration frequency of blasting vibrations affects the damage to buildings and structures [40][41][42]. e main vibration frequency closer to the natural frequency of the buildings results in greater damage to the buildings.…”

Section: Main Vibration Frequencymentioning

confidence: 99%

Field Investigation of Blasting‐Induced Vibration in Concrete Linings during Expansion of Old Highway Tunnel

Wang

Gong

et al. 2021

Advances in Civil Engineering

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Numerous mountain highway tunnels in China do not satisfy the current traffic design standards and therefore need to be rebuilt or expanded. The drilling-blasting method is the primary method employed in China for expanding mountain highway tunnels, and it is crucial to monitor the vibrations caused by blasting. This study conducted a field investigation of the vibrations caused by blasting during the expansion of Yujiaya tunnel, which was built in 1999. The blasting-induced vibrations in the new and old concrete linings were monitored and analyzed during the expansion. The measured values of the peak particle velocity (PPV) varied within the range of 0.097–8.246 cm/s. The attenuation law of the PPV was determined via a regression analysis using Sadovsky’s empirical formula. The relationship between the main vibration frequency and the distance from the blasting source was expressed as a power function. Finally, the safety distances of the concrete linings subject to blasting vibrations were analyzed and discussed.

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Section: Main Vibration Frequencymentioning

confidence: 99%

Field Investigation of Blasting‐Induced Vibration in Concrete Linings during Expansion of Old Highway Tunnel

Wang

Gong

et al. 2021

Advances in Civil Engineering

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“…. ε * is the effective total strain rate; T * is the homologous temperature, T * = T−T room T melt −T room ,T room is the room temperature, and T melt is the melt temperature, K. In the numerical simulation of this paper, the material parameter is X80 steel and the density ρ The material model of air [33] is MAT_NULL, and the state equation is EOS_LINEAR_ POLYNOMIAL,…”

Section: Materials Modelsmentioning

confidence: 99%

The Damage to Thick Steel Plates by Local Contact Explosions

Liu

et al. 2023

Materials

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The paper presents the damage results of thick steel plates subjected to local blast loading using experimental and numerical approaches. Three steel plates with a thickness of 17 mm under the local contact explosion of trinitrotoluene (TNT) explosives were tested, and the damaged parts of the steel plates were scanned using a scanning electron microscope (SEM). ANSYS LS-DYNA software was used to simulate the damage results of the steel plate. By analyzing and comparing the experimental results with the numerical simulation results, the influence law of the TNT acting on the steel plate, the damage mode of the steel plate, the reliability verification of the numerical simulation, and the criterion for judging the damage mode of the steel plate were obtained. Results show that the damage mode of the steel plate changes with the changes in the explosive charge. The diameter of the crater on the surface of the steel plate is mainly related to the diameter of the contact surface between the explosive and the steel plate. The fracture mode of the steel plate in the process of generating cracks is a quasi-cleavage fracture, and the process of generating craters and perforations in the steel plate is a ductile fracture. The damage mode of the steel plates can be divided into three types. The numerical simulation results have minor errors and high reliability, and numerical simulation can be used as an auxiliary tool for experiments. A new criterion is proposed to predict the damage mode of the steel plates under contact explosion.

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“…Blasting vibration waves are affected by many factors [8][9][10]. Li, et al [11] analyzed the PPV and stress on a tunnel surface, after which they assessed the tunnel's safety.…”

Section: Introductionmentioning

confidence: 99%

Blasting Vibration Monitoring and a New Vibration Reduction Measure

Yang

Zhang

Wang

2022

J. Eng. Technol. Sci.

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Vibration waves generated by blasting can cause shock to buildings. Different responses occur in different parts of the building. Therefore, a single standard is inaccurate. At the same time, methods to reduce vibration are needed. In this paper, the variation of peak particle velocity (PPV) and principal frequency was analyzed. The energy variation of blast vibration waves was analyzed by wavelet packet decomposition. A numerical model was established to verify the new vibration reduction measure. The results showed that the PPV on the walls increases with their height. The PPV and principal frequency of different structures of single-story brick-concrete buildings are different. The amplification factor of PPV does not change much when the principal frequency ratio is larger than 0.75. Measuring points at different heights have different sensitivities to blasting vibration waves of different principal frequencies. Therefore, different structures will respond differently to the same blasting operation. The PPV can be reduced by waveform interference. However, the cycle of blasting vibration waves decreases with increasing distance. Therefore, it is necessary to determine a reasonable interval to reduce the PPV. This requires further research.

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Ground Vibration Test and Dynamic Response of Horseshoe-shaped Pipeline During Tunnel Blasting Excavation in Pebbly Sandy Soil

Cited by 24 publications

References 11 publications

Field Investigation of Blasting‐Induced Vibration in Concrete Linings during Expansion of Old Highway Tunnel

Field Investigation of Blasting‐Induced Vibration in Concrete Linings during Expansion of Old Highway Tunnel

The Damage to Thick Steel Plates by Local Contact Explosions

Blasting Vibration Monitoring and a New Vibration Reduction Measure

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