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Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment

Ground improvement using artificial crust composite foundation, consisting of stabilization of soft clay and composite foundation, is an effective technique for the treatment of deep soft soil layers under infrastructure embankments. In this study, the load responses and settlement performance of th...

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Main Authors: Wang, Ying, Chen, Yonghui, Hu, Zhenhua, Feng, Qiang, Kong, Desen
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11691/1/25%20SM46%2011.pdf
http://journalarticle.ukm.my/11691/
http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
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spelling my-ukm.journal.116912018-05-28T00:42:13Z http://journalarticle.ukm.my/11691/ Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment Wang, Ying Chen, Yonghui Hu, Zhenhua Feng, Qiang Kong, Desen Ground improvement using artificial crust composite foundation, consisting of stabilization of soft clay and composite foundation, is an effective technique for the treatment of deep soft soil layers under infrastructure embankments. In this study, the load responses and settlement performance of this improvement technique were investigated using two centrifuge model tests to compare the variations of the vertical deformation, pore water pressure, axial force of the piles and tensile stress at the bottom of the artificial crust in the crust composite foundation with those in pile-supported embankment. The results of centrifuge model tests showed that the load responses and settlement performance of artificial crust composite foundation was different from the pile-supported embankment, which displayed mainly that the final middle settlement of crust composite foundation can be reduced by about 15% compared with those of pile-supported embankment with the same length of pile and construction cost. The deformation of the crust with the characteristics of the plate was found based on the change of the tensile stress. Additionally, the excess pore water pressure in the crust composite foundation was lower owing to the stress diffusion effect of the crust during the loading period and the dissipation rate of excess pore water pressure was slower due to lower permeability of the crust at the same loading period. Eventually, the axial force of the middle piles was reduced. At the same time, the boundary stress was functioned with the crust, the axial force of the side piles was improved. The comparison of measured and calculated results was carried out using the stress reduction ratio, the result shows that the bearing capacity of the subsoil in the crust composite was improved. Penerbit Universiti Kebangsaan Malaysia 2017-11 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11691/1/25%20SM46%2011.pdf Wang, Ying and Chen, Yonghui and Hu, Zhenhua and Feng, Qiang and Kong, Desen (2017) Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment. Sains Malaysiana, 46 (11). pp. 2231-2239. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Ground improvement using artificial crust composite foundation, consisting of stabilization of soft clay and composite foundation, is an effective technique for the treatment of deep soft soil layers under infrastructure embankments. In this study, the load responses and settlement performance of this improvement technique were investigated using two centrifuge model tests to compare the variations of the vertical deformation, pore water pressure, axial force of the piles and tensile stress at the bottom of the artificial crust in the crust composite foundation with those in pile-supported embankment. The results of centrifuge model tests showed that the load responses and settlement performance of artificial crust composite foundation was different from the pile-supported embankment, which displayed mainly that the final middle settlement of crust composite foundation can be reduced by about 15% compared with those of pile-supported embankment with the same length of pile and construction cost. The deformation of the crust with the characteristics of the plate was found based on the change of the tensile stress. Additionally, the excess pore water pressure in the crust composite foundation was lower owing to the stress diffusion effect of the crust during the loading period and the dissipation rate of excess pore water pressure was slower due to lower permeability of the crust at the same loading period. Eventually, the axial force of the middle piles was reduced. At the same time, the boundary stress was functioned with the crust, the axial force of the side piles was improved. The comparison of measured and calculated results was carried out using the stress reduction ratio, the result shows that the bearing capacity of the subsoil in the crust composite was improved.
format Article
author Wang, Ying
Chen, Yonghui
Hu, Zhenhua
Feng, Qiang
Kong, Desen
spellingShingle Wang, Ying
Chen, Yonghui
Hu, Zhenhua
Feng, Qiang
Kong, Desen
Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
author_facet Wang, Ying
Chen, Yonghui
Hu, Zhenhua
Feng, Qiang
Kong, Desen
author_sort Wang, Ying
title Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
title_short Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
title_full Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
title_fullStr Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
title_full_unstemmed Comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
title_sort comparative analysis of load responses and deformation for crust composite foundation and pile-supported embankment
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11691/1/25%20SM46%2011.pdf
http://journalarticle.ukm.my/11691/
http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
_version_ 1643738573256523776
score 13.211869

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