Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction

This study focuses on the ground vibration of a full-stone foundation treatment project. The single-point dynamic compaction test was performed using a tamping machine at an energy level of 3200 kN·m. Time-history curves of ground vibration velocity were recorded under 10 times tamping within 120 m...

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Main Authors: Jiawen Wu, Linjian Ma, Jun Shi, Yangyang Sun, Jiewei Ke, Dan Wang
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2019/2631797
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spelling doaj-62254df7126d4cd6b7609152316817ba2020-11-25T02:22:49ZengHindawi LimitedShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/26317972631797Investigation of Ground Vibration of Full-Stone Foundation under Dynamic CompactionJiawen Wu0Linjian Ma1Jun Shi2Yangyang Sun3Jiewei Ke4Dan Wang5State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, ChinaEngineering Agent Management Office of Logistics Department of PLA Navy, Beijing 100036, ChinaCollege of National Defense Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaUnit 31619 of PLA, Nanjing 211131, ChinaCollege of National Defense Engineering, Army Engineering University of PLA, Nanjing 210007, ChinaThis study focuses on the ground vibration of a full-stone foundation treatment project. The single-point dynamic compaction test was performed using a tamping machine at an energy level of 3200 kN·m. Time-history curves of ground vibration velocity were recorded under 10 times tamping within 120 m distance. The effects of tamping times on the waveform of velocity and frequency spectra were assessed, as well as of peak ground velocity (PGV), peak ground acceleration (PGA), and average frequency. Furthermore, the attenuations of PGV, PGA, and average frequency were also analyzed in detail. It has been founded that increasing tamping times of dynamic compaction can effectively improve PGV and PGA. For the frequency spectra, the increasing tamping times contribute to a higher frequency range, more primary frequencies, and a larger frequency domain. However, the three parameters, namely, PGV, PGA, and average frequency, remain stable roughly when they reach a threshold of test tamping times. The attenuations of PGV and PGA with the proportional distance follow the power law with negative exponents. Furthermore, the fitted equivalent factor increases while the damped exponential decreases persistently with the increase of tamping times. The average frequency is negatively linearly correlated with the proportional tamping distances.http://dx.doi.org/10.1155/2019/2631797
collection DOAJ
language English
format Article
sources DOAJ
author Jiawen Wu
Linjian Ma
Jun Shi
Yangyang Sun
Jiewei Ke
Dan Wang
spellingShingle Jiawen Wu
Linjian Ma
Jun Shi
Yangyang Sun
Jiewei Ke
Dan Wang
Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction
Shock and Vibration
author_facet Jiawen Wu
Linjian Ma
Jun Shi
Yangyang Sun
Jiewei Ke
Dan Wang
author_sort Jiawen Wu
title Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction
title_short Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction
title_full Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction
title_fullStr Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction
title_full_unstemmed Investigation of Ground Vibration of Full-Stone Foundation under Dynamic Compaction
title_sort investigation of ground vibration of full-stone foundation under dynamic compaction
publisher Hindawi Limited
series Shock and Vibration
issn 1070-9622
1875-9203
publishDate 2019-01-01
description This study focuses on the ground vibration of a full-stone foundation treatment project. The single-point dynamic compaction test was performed using a tamping machine at an energy level of 3200 kN·m. Time-history curves of ground vibration velocity were recorded under 10 times tamping within 120 m distance. The effects of tamping times on the waveform of velocity and frequency spectra were assessed, as well as of peak ground velocity (PGV), peak ground acceleration (PGA), and average frequency. Furthermore, the attenuations of PGV, PGA, and average frequency were also analyzed in detail. It has been founded that increasing tamping times of dynamic compaction can effectively improve PGV and PGA. For the frequency spectra, the increasing tamping times contribute to a higher frequency range, more primary frequencies, and a larger frequency domain. However, the three parameters, namely, PGV, PGA, and average frequency, remain stable roughly when they reach a threshold of test tamping times. The attenuations of PGV and PGA with the proportional distance follow the power law with negative exponents. Furthermore, the fitted equivalent factor increases while the damped exponential decreases persistently with the increase of tamping times. The average frequency is negatively linearly correlated with the proportional tamping distances.
url http://dx.doi.org/10.1155/2019/2631797
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AT yangyangsun investigationofgroundvibrationoffullstonefoundationunderdynamiccompaction
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