TLM-CFSPML for 3D dynamic responses of a layered transversely isotropic half-space

Li, Hui; He, Chao; Gong, Quanmei; Zhou, Shunhua; Li, Xiaoxin; Zou, Chao

doi:10.1016/j.compgeo.2024.106131

Cited by 18 publications

(4 citation statements)

References 63 publications

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“…The vertical velocity vibration level decreased gradually with the increase in distance from the road, indicating that the vibration energy gradually decreased during the vibration propagation, which follows the vibration propagation rule in Ref. [40].…”

Section: Vibration Level Of Ground Vibrationsupporting

confidence: 71%

Measurements and Evaluation of Road Traffic-Induced Micro-Vibration in a Workshop Equipped with Precision Instruments

Zhang,

Li,

Zhang

et al. 2024

Buildings

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Road traffic transportation has flourished in the process of urbanization due to its advantages, but concurrently it generates harmful environmental vibrations. This vibration issue becomes particularly crucial in production workshops housing precision instruments. However, limited research has been undertaken on this matter. This study aimed to investigate the influence of road traffic-induced vibration on micro-vibrations within a workshop housing precision instruments. A field test was conducted to assess the vibration levels originating from both machinery operation and vehicular traffic. The results indicated that ground-borne vibrations caused by road vehicles decrease with increasing propagation distance, peaking around 10 Hz. Machinery operation vibrations were primarily concentrated above 20 Hz, while vehicular traffic vibrations were more prominent below 20 Hz. Notably, the passage of heavy trucks significantly impacted both ground and workshop vibrations, with vertical vibrations being particularly significant. Within the workshop, the second floor experienced higher vibrations above 20 Hz due to the presence of installed instruments. Importantly, the micro-vibration levels on both floors exceeded the VC-C limit (12.5 µm/s), highlighting the need to account for road traffic and machinery vibrations in workshop design. These data can be utilized to validate numerical models for predicting road traffic-induced vibrations, aiding in vibration assessment during road planning and design.

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Section: Vibration Level Of Ground Vibrationsupporting

confidence: 71%

Measurements and Evaluation of Road Traffic-Induced Micro-Vibration in a Workshop Equipped with Precision Instruments

Zhang,

Li,

Zhang

et al. 2024

Buildings

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“…Considering the soil is divided into two layers: the shear velocity of the upper s It should be noted that the former analysis of the pile is considered to be a foundation embedded in a uniform elastic half-space, while the soil in engineering practice shows layer distribution [48,49]. To clarify the effect of soil stratification on the dynamic response of the tapered pile, both two and three soil layers are discussed in this section.…”

Section: Effect Of Soil Stratification On the Nonlinear Dynamic Respo...mentioning

confidence: 99%

Time Domain Nonlinear Dynamic Analysis of Vertically Loaded Tapered Pile in Layered Soils

Shua,

Liu,

et al. 2024

Buildings

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A simplified model is proposed for predicting the nonlinear dynamic response of vertically loaded tapered piles in the time domain, in which the tapered pile is divided into several frustum segments and the four-spring is used for the simulation of the soil–pile interaction. The differential equations for the tapered pile are given and solved by the finite difference method. The vertical dynamic response of a typical tapered pile is investigated, and the consistency of the computational results compared with the finite element results convincingly verifies the reliability of the proposed simplified model. Then, recommended segment numbers, considering the computational efficiency and accuracy requirements for the dynamic analysis of tapered piles, are given. And parametric studies are also carried out to investigate the effect of soil and pile parameters on the nonlinear dynamic response of the tapered pile. The results show that soil nonlinearity significantly affects the vertical dynamic characteristics of the tapered pile. And the tapered pile shows better dynamic characteristics than the cylindrical pile with the same volume and pile length. In addition, the properties of the soil along the upper part of the tapered pile have a more considerable effect on the dynamic response of the tapered pile. These results help to further improve the theory of nonlinear dynamic response analysis of tapered piles and promote its widespread application in engineering practice.

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“…Numerical modeling has been employed by scholars to accurately predict the vibration effects of rail traffic on adjacent or overtrack buildings, with some establishing a train track-soil-building model [12][13][14], while others have conducted dynamic interaction studies of vehicle-track-bridge-soil [15][16][17][18][19][20] to investigate the behavior of rail bridges and soil-structure effects. Some scholars have taken into account the soil-structure interaction effect to investigate the dynamic interplay between soil inclusion and soil properties [21,22]. Some scholars have also taken into account the soil-structure interaction effect to investigate the impact of the vibration induced by train operation on adjacent or over-track buildings [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Vibration Characteristics during Various Building Construction Stages under Train Operations

Hu,

Zou,

Chen

et al. 2024

Applied Sciences

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In response to land use challenges, major urban centers have started implementing over-track building constructions above metro lines as a means of accommodating residents and workers. However, the continuous operation of trains can generate excessive vibrations that may negatively impact the overall living conditions for occupants residing in these structures. In this paper, vibration measurements were conducted on the soil and within a three-story frame structure building. Additionally, a three-dimensional finite element model of the track–soil–building was established. The wheel–rail contact force was incorporated as a dynamic load that varies with time to accurately simulate the vibration response induced by trains. According to the construction process of the over-track building, four construction stages were set up using the finite element model to study the impact of the construction stages on the vibration propagation from the soil to building structure. The results indicate that the presence of existing structures exerts a mitigating influence on soil vibrations. Pile foundation construction can effectively mitigate soil vibration to a significant extent. The findings provide references for the future development and design of over-track buildings.

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TLM-CFSPML for 3D dynamic responses of a layered transversely isotropic half-space

Cited by 18 publications

References 63 publications

Measurements and Evaluation of Road Traffic-Induced Micro-Vibration in a Workshop Equipped with Precision Instruments

Measurements and Evaluation of Road Traffic-Induced Micro-Vibration in a Workshop Equipped with Precision Instruments

Time Domain Nonlinear Dynamic Analysis of Vertically Loaded Tapered Pile in Layered Soils

Investigation of Vibration Characteristics during Various Building Construction Stages under Train Operations

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