Performance prediction of prefabricated vertical drain in soft soil using finite element method

Soft soil ground improvement method by using preloading with prefabricated vertical drain (PVD) had successfully applied in many soft ground construction projects. Due to the complexity of today’s construction work, finite element method could assist designers to model very complex subsoil and struc...

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Main Author:	Teh, Zhi Huan
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/54068/1/TehZhiHuanMFKA2015.pdf
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id	my-utm-ep.54068
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spelling	my-utm-ep.540682020-10-15T03:54:52Z Performance prediction of prefabricated vertical drain in soft soil using finite element method 2015-06 Teh, Zhi Huan TA Engineering (General). Civil engineering (General) Soft soil ground improvement method by using preloading with prefabricated vertical drain (PVD) had successfully applied in many soft ground construction projects. Due to the complexity of today’s construction work, finite element method could assist designers to model very complex subsoil and structural elements. In this study, finite element analysis is performed to verify the effectiveness of modelling of PVD in subsoil using computer software, Plaxis V8. The field settlement data were collected at two particular locations and were analysed using Asaoka’s (1978) method to estimate the ultimate settlement and back-calculated the coefficient of horizontal consolidation for these two particular location. Thereafter, by using backcalculated coefficient of horizontal consolidation, finite element analyses were performed to predict the time rate settlement and compared against field settlement results. From the time rate settlement curves generated by FEM, the ultimate settlements were predicted using Asaoka’s (1978) method. It was found that the predicted time rate settlement by FEM shows reasonable agreement with the actual field settlement result. The ultimate settlement predicted from FEM is slightly lower compared to actual field settlement monitoring result, but the degree of consolidation settlement achieved were higher. In term of time required to achieve 90% consolidation settlement after surcharge, FEM shows slightly advancement compared to actual field settlement monitored. However, the advancement is only within 5% which is in good agreement with the actual field monitored reading. 2015-06 Thesis http://eprints.utm.my/id/eprint/54068/ http://eprints.utm.my/id/eprint/54068/1/TehZhiHuanMFKA2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86185 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Teh, Zhi Huan Performance prediction of prefabricated vertical drain in soft soil using finite element method
description	Soft soil ground improvement method by using preloading with prefabricated vertical drain (PVD) had successfully applied in many soft ground construction projects. Due to the complexity of today’s construction work, finite element method could assist designers to model very complex subsoil and structural elements. In this study, finite element analysis is performed to verify the effectiveness of modelling of PVD in subsoil using computer software, Plaxis V8. The field settlement data were collected at two particular locations and were analysed using Asaoka’s (1978) method to estimate the ultimate settlement and back-calculated the coefficient of horizontal consolidation for these two particular location. Thereafter, by using backcalculated coefficient of horizontal consolidation, finite element analyses were performed to predict the time rate settlement and compared against field settlement results. From the time rate settlement curves generated by FEM, the ultimate settlements were predicted using Asaoka’s (1978) method. It was found that the predicted time rate settlement by FEM shows reasonable agreement with the actual field settlement result. The ultimate settlement predicted from FEM is slightly lower compared to actual field settlement monitoring result, but the degree of consolidation settlement achieved were higher. In term of time required to achieve 90% consolidation settlement after surcharge, FEM shows slightly advancement compared to actual field settlement monitored. However, the advancement is only within 5% which is in good agreement with the actual field monitored reading.
format	Thesis
qualification_level	Master's degree
author	Teh, Zhi Huan
author_facet	Teh, Zhi Huan
author_sort	Teh, Zhi Huan
title	Performance prediction of prefabricated vertical drain in soft soil using finite element method
title_short	Performance prediction of prefabricated vertical drain in soft soil using finite element method
title_full	Performance prediction of prefabricated vertical drain in soft soil using finite element method
title_fullStr	Performance prediction of prefabricated vertical drain in soft soil using finite element method
title_full_unstemmed	Performance prediction of prefabricated vertical drain in soft soil using finite element method
title_sort	performance prediction of prefabricated vertical drain in soft soil using finite element method
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/54068/1/TehZhiHuanMFKA2015.pdf
_version_	1747817677953433600

Performance prediction of prefabricated vertical drain in soft soil using finite element method

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