Article
Engineering, Civil
Xiaohui Zhang, Shunhua Zhou, Chao He, Honggui Di, Jinbiao Si
Summary: This study presents a field measurement of train-induced vibration in northwest Shanghai, specifically where Shanghai Metro Line 11 crosses under Beijing-Shanghai Railway. Results showed that the simultaneous operation of ground and subway trains induced significantly higher ground vibration acceleration levels compared to separate operations, with a redistribution of vibration frequency components. These findings can be used to validate future numerical models for predicting similar train-induced vibration in embankment-tunnel systems.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Geological
Rafael Rodriguez, Laura Garcia de Marina, Marc Bascompta, Cristobal Lombardia
Summary: The study presents a methodology for determining the behavior of vibrations generated in any rock mass based on a single blast in a trench excavation, achieving high confidence level in a simple manner. The proposed approach can have an important impact in reducing potential consequences of vibrations for surrounding construction and achieving the required definition of rock mass, particularly useful for reducing cost and time in projects where blasting techniques are applied.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2021)
Article
Engineering, Civil
Shuai Qu, Jianjin Yang, Shengyang Zhu, Wanming Zhai, Georges Kouroussis, Qinglai Zhang
Summary: Rail transit and highway transportation have thrived in urbanization, benefiting people's travel while also causing harmful environmental vibrations. A field measurement in Shenzhen, China, focused on source characteristics and propagation laws of train-induced vibrations, showing different vibration responses under various operating conditions. The study highlights the importance of considering local geological conditions and the simultaneous impact of multiple train and road traffic sources on ground vibrations.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Environmental Sciences
Xiaojing Sun, Meng Ma, Bolong Jiang, Rongning Cao
Summary: The study conducted in situ measurements on different types of railway lines to compare the track and ground vibrations caused by various trains, and proposed periodic piles as a mitigation measure based on dominant frequencies of ground vibrations. Finite element simulation was used to analyze the vibration reduction performance of periodic piles, showing positive influence on reducing vibrations in the propagation path.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Civil
Lijian Lei, Linchang Miao, Chao Li, Xiaodong Liang, Junjie Wang
Summary: This study focuses on the effects of locally resonant periodic wave barriers (LRPWBs) on subway vibration, investigating the impact of geometrical and material parameters in detail. Results show that LRPWBs designed based on locally resonant phononic crystals theory can effectively reduce subway vibration, forming low-frequency broadband bandgaps. Furthermore, the appropriate combination of multiple LRPWBs can help achieve wider bandgaps.
KSCE JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Engineering, Civil
Zhisong Zhang, Meng Gao, Jian Song, Qingsheng Chen
Summary: Subways are efficient transportation modes, but the vibration generated by trains causes environmental pollution. A new vibration isolation strategy using DX-Lining was proposed in this study, showing a significant decrease in vibration levels on Metro Lines in Qingdao, China.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Acoustics
O. Scussel, M. J. Brennan, M. K. Iwanaga, F. C. L. Almeida, M. Karimi, J. M. Muggleton, P. F. Joseph, E. Rustighi
Summary: This paper investigates the propagation of leak noise from a buried plastic water pipe to the ground surface through the analysis of surface vibrations. It reveals the mechanisms of leak noise propagation by analyzing the relative phase of vertical ground vibrations at points above the pipe. The study uses experimental measurements, a simplified analytical model, and a numerical model to explore the influence of different waves on ground surface vibration and the potential of using phase data for pipe location strategies.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Engineering, Civil
Javad Sadeghi, Ehsan Haghighi, Morteza Esmaeili
Summary: This paper investigates the injection of a continuous thin layer of soft materials into the soil as a practical countermeasure against subway-induced vibrations. Simulations and parametric analysis show that a softer isolator combined with a stiffer soil provides the best configuration for attenuating the vibrations.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2023)
Article
Engineering, Civil
Yuhong Ling, Yinzi Zhang, Quan Luo, An He
Summary: A simplified numerical modelling technique of the subway superstructure was proposed to simulate the above-ground vibration response under subway operation. The method was validated through comparing the simulated and measured results of a building. The study also explored the difference in the propagation characteristics of subway-induced vibration in structures of two different forms.
Article
Engineering, Geological
Xiao Wang, Shui Wan, Peng Zhou, Linyun Zhou, Yingbo Zhu
Summary: This study optimized the topologies of periodic pile barriers using an improved genetic algorithm combined with the finite element method, maximizing the relative widths of attenuation zones and proposing novel unit structures for mid-frequency vibration isolation.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Xin Gao, Qiang Yi, Jiaxin Lei, Ping Wang, Caiyou Zhao
Summary: This paper measures and analyzes the vibration in the urban metro turnout area using on-site experimental methods, and compares the effects of vibration isolation fasteners and steel-spring floating slabs. By employing an energy evaluation method, it also analyzes the vibration propagation characteristics on the nonisolated turnout frog section, providing important data for vibration control.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Yashi Li, Jianbo Zhu, Dongya Han, Rui Zhao, Yankun Ma, Tao Zhou
Summary: The shock wave generated from underground blasting can cause severe catastrophe and irreparable destruction to adjacent underground and ground structures. Laboratory tests using explosive charges and cement mortar blocks were conducted to investigate the dynamic response of rock masses and adjacent underground openings to underground blasting. The findings show that both charge loading density and joint orientation significantly affect ground peak particle velocity (PPV) and peak strain at openings and rock masses. Increasing charge loading density or decreasing scaled distance results in a rise in peak strain of rock masses. Ground PPV is observed to clearly increase with higher charge loading density. The wave path, determined by the relative locations of the explosion source, measuring point, and joints, dominates the first peak strain of rock masses and ground PPV. The principal frequency of ground vibrations increases with higher joint orientation, while charge loading density has a slight impact on the principal frequency. These research findings contribute to a better understanding of blasting wave propagation in jointed rock masses and facilitate the stability assessment of aboveground and underground structures under underground explosions.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Engineering, Civil
Binghua Zhou, Yiguo Xue, Jun Zhang, Dunfu Zhang, Jian Huang, Daohong Qiu, Lin Yang, Kai Zhang, Jiuhua Cui
Summary: In this study, a back-propagation neural network model based on ANSYS numerical simulation results was established to analyze and calculate the vertical Z-vibration level of ground buildings in the New Capital area of Qingdao Metro phase I Project. The research results have good reference and guiding significance for predicting vibration caused by subway operation.
GEOMECHANICS AND ENGINEERING
(2022)
Article
Mechanics
L. H. M. S. Ribeiro, V. F. Dal Poggetto, J. R. F. Arruda
Summary: Vibration must be considered in structural design, and periodic structures can attenuate waves through wave propagation phenomena. The geometric and material properties of the unit cell in periodic structures are crucial for design. Robust optimal design can mitigate the impact of parameter variations on the objective function.
Article
Acoustics
Peng Zhang, Junguo He, Wanyi Huang, Yixing Yuan, Chenguang Wu, Jie Zhang, Yongqin Yuan, Pengkun Wang, Baoming Yang, Kun Cheng, Hao Cui, Lingduo Zhang
Summary: This study investigates the frequency and attenuation of leak signals from buried liquid-filled plastic and metal pipes by analyzing ground surface vibrations in an indoor experimental test facility. The results show that the leak signals attenuate the high-frequency content more easily compared to the low-frequency content on the ground surface. In the vicinity of the leak source, the attenuation of the leak signal propagating in the soil is mainly attributed to the P2-wave.
