Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM

When bridge construction has been completed, the temporary support system, such as a steel-pipe pile, is dismantled, and problems that are related to the steel-pipe piles pulling from the strata are encountered. It is difficult to measure the dynamic characteristics of the surroundings during the de...

Full description

Saved in:
Bibliographic Details
Main Authors: Tingting Sun, Zhihua Zhang, Jixin Yang, Jingnan Yang, Xuan Zhang
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2020/5092102
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832556369334501376
author Tingting Sun
Zhihua Zhang
Jixin Yang
Jingnan Yang
Xuan Zhang
author_facet Tingting Sun
Zhihua Zhang
Jixin Yang
Jingnan Yang
Xuan Zhang
author_sort Tingting Sun
collection DOAJ
description When bridge construction has been completed, the temporary support system, such as a steel-pipe pile, is dismantled, and problems that are related to the steel-pipe piles pulling from the strata are encountered. It is difficult to measure the dynamic characteristics of the surroundings during the deep pile-pulling process. A numerical model of the pulling pile is established by using the discrete element method (DEM). A sinusoidal dynamic load is executed on the pile with various vibrational frequencies. The stress, bond, coordination number, porosity, and velocity field distribution of the surrounding soil during the pile-pulling process are studied. The results demonstrate that, during the pile-pulling process, the shearing state of the surrounding soil depends on the position of the pile. The number and area of bond fractures gradually increase, the coordination number decreases, and the porosity gradually increases when the pile-pulling distance increases. Under a vibrational load, the area that corresponds to particles with large velocity and displacement expands with the increase of the vibrational frequency. The major influence zone of the pile pulling on both sides is concentrated within 6dpile, which can be used to evaluate the safety of the existing bridge nearby during pile pulling.
format Article
id doaj-art-e200c1f848d84e72b7874dff1d0d749d
institution Kabale University
issn 1070-9622
1875-9203
language English
publishDate 2020-01-01
publisher Wiley
record_format Article
series Shock and Vibration
spelling doaj-art-e200c1f848d84e72b7874dff1d0d749d2025-02-03T05:45:46ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/50921025092102Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEMTingting Sun0Zhihua Zhang1Jixin Yang2Jingnan Yang3Xuan Zhang4School of Transportation, Wuhan University of Technology, Hubei, Wuhan 430063, ChinaChangjiang River Scientific Research Institute of Changjiang Water Resources Commission, Hubei, Wuhan 430010, ChinaSchool of Transportation, Wuhan University of Technology, Hubei, Wuhan 430063, ChinaSchool of Transportation, Wuhan University of Technology, Hubei, Wuhan 430063, ChinaSchool of Transportation, Wuhan University of Technology, Hubei, Wuhan 430063, ChinaWhen bridge construction has been completed, the temporary support system, such as a steel-pipe pile, is dismantled, and problems that are related to the steel-pipe piles pulling from the strata are encountered. It is difficult to measure the dynamic characteristics of the surroundings during the deep pile-pulling process. A numerical model of the pulling pile is established by using the discrete element method (DEM). A sinusoidal dynamic load is executed on the pile with various vibrational frequencies. The stress, bond, coordination number, porosity, and velocity field distribution of the surrounding soil during the pile-pulling process are studied. The results demonstrate that, during the pile-pulling process, the shearing state of the surrounding soil depends on the position of the pile. The number and area of bond fractures gradually increase, the coordination number decreases, and the porosity gradually increases when the pile-pulling distance increases. Under a vibrational load, the area that corresponds to particles with large velocity and displacement expands with the increase of the vibrational frequency. The major influence zone of the pile pulling on both sides is concentrated within 6dpile, which can be used to evaluate the safety of the existing bridge nearby during pile pulling.http://dx.doi.org/10.1155/2020/5092102
spellingShingle Tingting Sun
Zhihua Zhang
Jixin Yang
Jingnan Yang
Xuan Zhang
Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM
Shock and Vibration
title Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM
title_full Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM
title_fullStr Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM
title_full_unstemmed Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM
title_short Dynamic Characteristics of the Surrounding Soil during the Vibrational Pulling Process of a Pile Based on DEM
title_sort dynamic characteristics of the surrounding soil during the vibrational pulling process of a pile based on dem
url http://dx.doi.org/10.1155/2020/5092102
work_keys_str_mv AT tingtingsun dynamiccharacteristicsofthesurroundingsoilduringthevibrationalpullingprocessofapilebasedondem
AT zhihuazhang dynamiccharacteristicsofthesurroundingsoilduringthevibrationalpullingprocessofapilebasedondem
AT jixinyang dynamiccharacteristicsofthesurroundingsoilduringthevibrationalpullingprocessofapilebasedondem
AT jingnanyang dynamiccharacteristicsofthesurroundingsoilduringthevibrationalpullingprocessofapilebasedondem
AT xuanzhang dynamiccharacteristicsofthesurroundingsoilduringthevibrationalpullingprocessofapilebasedondem