Numerical study of reduction in ground vibrations by using barriers

Persson, Peter; Persson, Kent; Sandberg, Göran

doi:10.1016/j.engstruct.2016.02.025

Cited by 44 publications

(24 citation statements)

References 24 publications

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“…In comparison, previous work concerning the same example case showed that having a barrier [3] or a shaped landscape [4] between the motorway and building, it is possible to achieve a reduction of approximately 35%. Moreover, stabilising the soil was found to reduce vibrations caused by pedestrians inside the building by almost 80%.…”

Section: Discussionmentioning

confidence: 78%

“…In previous studies by the authors found that including bedrock in the FE models can have a large influence of the level of reduction obtained when a vibration reduction measure was applied [3]. It was concluded that the wavefront propagates through the bedrock and affects the soil layer at long distances from the vibration source.…”

Section: Influence Of Bedrockmentioning

confidence: 95%

“…Fig 19 shows the considered frequencies of the traffic load. See [3] for a detailed description of the procedure applied to determining the frequency content of the traffic load. The harmonic load, representing the traffic, was applied 100 m from the closest distance to the concrete slab and the displacements were evaluated at nodes located along the ring-shaped concrete structure, as shown in Fig.…”

Section: Prediction Of Reduction Levelmentioning

confidence: 99%

“…Since then, several research groups have investigated the vibration reduction effects of various types of wave obstacles, such as trenches (open, back-filled and water-infiltrated) [2,3] and shaped landscapes [4]. The idea of placing a wave obstacle is to introduce a disturbance in the incident wavefront by reflection and refraction of the waves.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study on reducing building vibrations by foundation improvement

Persson

Sandberg

2016

Engineering Structures

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Section: Discussionmentioning

confidence: 78%

Section: Influence Of Bedrockmentioning

confidence: 95%

Section: Prediction Of Reduction Levelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical study on reducing building vibrations by foundation improvement

Persson

Sandberg

2016

Engineering Structures

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“…Diagram of the feedback loop is shown in Figure 3. A mass m whose motion x we wish to decouple from any motion of the ground y is suspended from a spring with linear spring constant k and damping factor c (Figure 1). By analyzing the system we get a well known linear 2nd order dynamic equat ion with constant coefficients [19][20][21] …”

Section: Fig3 -Diagram Of the Feedback Loopmentioning

confidence: 99%

Design of an Active Low Frequency Vibration Isolation System for Atom Interferometry by Using Sliding Mode Control

Luo¹,

Cheng²,

Wu³

et al. 2017

CEJ

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Active vibration isolation is gaining increased attention in the ultra-high precision application of atom interferometry to effectively treat the unavoidable ground vibration. In this system, a digital control subsystem is used to process and feedback the vibration measured by a seismometer. A voice coil actuator is used to control and cancel the motion of a commercial passive vibration isolation platform. The system level simulation model is established by Simulink software, The simulation results demonstrate the asymptotic stability of the system and the robustness of the control algorithm. Compared with the conventional lead-lag compensation type controller, the algorithm adopted uses sliding mode control, taking advantage of its easy computer implementation and its robust high performance properties. With the feedback path closed, the system acts like a spring system with a natural resonance frequency of 0.02 Hz. The vibration noise in the vertical direction is about 20 times reduced during 0.1 and 2 Hz, The experimental results verify that the isolator has significant vibration isolation performance, and it is very suitable for applications in high precision gravity measurement.

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Numerical study of isolation in the backfill zone of foundation pit method to reduce railway generated vibration in high‐rise buildings

Pan

Zeng

Yang

et al. 2019

Structural Design Tall Build

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The conventional methods to reduce building vibration include isolation of vibration sources, isolation of buildings, and setting trenches in the propagation path. However, it is evidenced that these methods are not feasible for high-rise buildings in crowded urban areas. This paper proposes a new method to reduce vibration for high-rise buildings by using the existing construction backfill zone, the isolation in the backfill zone of foundation pit (IBF). Numerical analyses were first carried out to obtain a realistic excitation time history, and a finite element-infinite element model was developed and calibrated using test data from an actual building site. The contributions of the basement sidewalls and foundation slabs to floor vibration and the influence of infill material properties are investigated. Lastly, a composite isolation layer was suggested to provide both sufficient restraining effects to the building foundation and satisfactory vibration isolation. The analyses confirmed that the proposed IBF method reduces ground-borne vibration in high-rise buildings by up to 66% when railway is on the ground. KEYWORDSbackfill zone of foundation pit, composite isolation layer, finite element-infinite element, high-rise building, inverse procedure, railway generated vibration reduction

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Numerical study of reduction in ground vibrations by using barriers

Cited by 44 publications

References 24 publications

Numerical study on reducing building vibrations by foundation improvement

Numerical study on reducing building vibrations by foundation improvement

Design of an Active Low Frequency Vibration Isolation System for Atom Interferometry by Using Sliding Mode Control

Numerical study of isolation in the backfill zone of foundation pit method to reduce railway generated vibration in high‐rise buildings

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