Ground vibration propagation and attenuation of vibrating compaction

Chen, Aijun; Cheng, Feng Wen; Wu, Di; Tang, Xianyuan

doi:10.21595/jve.2019.20388

Cited by 14 publications

(6 citation statements)

References 22 publications

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“…Apart from the research directions mentioned above, currently, the most widespread research is in the propagation and damping of vibrations accompanying rail transport, dynamic compaction, explosions, and pile-driving foundations [22]. The vibration monitoring system presented in this publication combines elements from different suppliers to work together smoothly and provide reliable measurement data.…”

Section: Directions Of Research Workmentioning

confidence: 99%

“…Scientists analysing the influence of the impact energy on the vibrations of the ground and objects use properties in the amplitude's form of the propagating wave, its frequency, or the speed of movement of soil particles. The Bornitz equation, describing the damping of vibrations at selected points of the ground, is commonly used [21][22][23][24][25][26]:…”

Section: Introductionmentioning

confidence: 99%

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A System for Monitoring and Normative Qualification of Building Structure Vibrations Induced by Nearby Construction Works

Hypki,

Sumorek,

Kawecki

et al. 2023

Applied Sciences

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Mechanical action can damage physical objects, such as building structures. The transfer of energy to the ground through the falling mass, forming a crater, can cause kinematic forces in the soil medium. An effect of these forces, connected with the technology of geotechnical machines, is vibrations of the ground and building structures. When finding the energy impact on the object is difficult or even impossible, vibration monitoring and indirect estimation of the negative energy impact effects is possible. Commercial off-the-shelf solutions exist for vibration monitoring and recording, but they are dedicated to one application type and are relatively expensive. This paper presents a proprietary system for monitoring and recording vibrations of building objects transmitted through the ground. This allows for local registration and remote administration and presentation of data via a computer network. Vibrations can be analysed according to the requirements of developers and clients. The developed system shows that creating an effective approach for collecting data on building vibrations using components from different suppliers is possible. The waveforms collected using the system confirm the effectiveness and flexibility of the presented solution, providing a possibility of using the results to decide whether the vibrations are within the standard limits.

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Section: Directions Of Research Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A System for Monitoring and Normative Qualification of Building Structure Vibrations Induced by Nearby Construction Works

Hypki,

Sumorek,

Kawecki

et al. 2023

Applied Sciences

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show abstract

“…A simple method summarizing the ground vibrations measured by DAS is presented referring to the single degree of free system (the motion equation) of the drill in the percussive system propelled into rocky ground [29]. Based on three aspects, firstly, the most ground vibrations are caused by sudden loading; secondly, the ground is not elastic, and the soil damping coefficient is less than 1 [30][31][32][33]; thirdly, DAS measures vibration signals in a single direction. The vibration has two-stage displacements when the source of the vibration acts on the ground.…”

Section: Simulated Data Streammentioning

confidence: 99%

Signal Activity Detection for Fiber Optic Distributed Acoustic Sensing with Adaptive-Calculated Threshold

Cao

et al. 2022

Sensors

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The key point on analyzing the data stream measured by fiber optic distributed acoustic sensing (DAS) is signal activity detection separating measured signals from environmental noise. The inability to calculate the threshold for signal activity detection accurately and efficiently without affecting the measured signals is a bottleneck problem for current methods. In this article, a novel signal activity detection method with the adaptive-calculated threshold is proposed to solve the problem. With the analysis of the time-varying random noise’s statistical commonality and the short-term energy (STE) of real-time data stream, the top range of the total STE distribution of the noise is found accurately for real-time data stream’s ascending STE, thus the adaptive dividing level of signals and noise is obtained as the threshold. Experiments are implemented with simulated database and urban field database with complex noise. The average detection accuracies of the two databases are 97.34% and 90.94% only consuming 0.0057 s for a data stream of 10 s, which demonstrates the proposed method is accurate and high efficiency for signal activity detection.

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“…The intensity (i.e., energy) of sound waveforms is well‐known to follow an inverse proportional square law as a function of distance from the sound source. Terramechanics experiments have also demonstrated that geometric attenuation of vibration in ground terrain follows a similar relationship [CCWT19]. Given a vibration source impacting a terrain surface, the attenuation factor of the waveform amplitude at a distant point is given by

…”

Section: Distant Collision Responsementioning

confidence: 99%

Distant Collision Response in Rigid Body Simulations

Coevoet

Andrews

Relles

et al. 2020

Computer Graphics Forum

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We use a finite element model to predict the vibration response of objects in a rigid body simulation, such that rigid objects are augmented to provide a plausible elastic collision response between distant objects due to vibration. We start with a generalized eigenvalue decomposition of the elastic model to precompute a response to an impact at any point on an elastic object with fixed boundary conditions. Then, given a collision between objects, we generate an approximate response impulse to distribute to other objects already in contact with the colliding bodies. This can lead to distant impacts causing an object to slip, or a delicate stack of objects to fall. We also use a geodesic distance based spatial attenuation approximation for travelling waves in objects to respond to an impact at one contact with an impulse at other locations. This response ultimately allows a long distance relationship between contacts, both across a single object being struck, but also traversing the contact graph of a larger collection of objects. We qualitatively validate our approach with a ground truth simulation, and demonstrate a number of scenarios where a long distance relationship between contacts is valuable.

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Ground vibration propagation and attenuation of vibrating compaction

Cited by 14 publications

References 22 publications

A System for Monitoring and Normative Qualification of Building Structure Vibrations Induced by Nearby Construction Works

A System for Monitoring and Normative Qualification of Building Structure Vibrations Induced by Nearby Construction Works

Signal Activity Detection for Fiber Optic Distributed Acoustic Sensing with Adaptive-Calculated Threshold

Distant Collision Response in Rigid Body Simulations

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