Lateral earth pressures on braced retaining wall

The increasing demand for underground space, for use as transportation tunnels, railway stations, expressways and construction of high-rise buildings is present in Singapore. In an urbanized city and land scarce country like Singapore, deep excavations are constructed in close proximity to sensitive...

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Main Author:	Liu, Faxiang.
Other Authors:	Goh Teck Chee, Anthony
Format:	Final Year Project
Language:	English
Published:	2009
Subjects:	DRNTU::Engineering::Civil engineering::Geotechnical
Online Access:	http://hdl.handle.net/10356/15884
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Institution:	Nanyang Technological University
Language:	English

id	sg-ntu-dr.10356-15884
record_format	dspace
spelling	sg-ntu-dr.10356-158842023-03-03T17:04:57Z Lateral earth pressures on braced retaining wall Liu, Faxiang. Goh Teck Chee, Anthony School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Geotechnical The increasing demand for underground space, for use as transportation tunnels, railway stations, expressways and construction of high-rise buildings is present in Singapore. In an urbanized city and land scarce country like Singapore, deep excavations are constructed in close proximity to sensitive structures. Hence the prediction of lateral earth pressure, strut loads, lateral wall deflections and bending moments are important considerations to avoid damage to adjacent structures. The Plaxis finite element program was used to simulate the excavation process on a total of 24 case studies with variable shear strength, depths of clay layer and wall stiffness. Clay is modeled as non-porous linear elastic perfectly-plastic material using the Mohr-coulomb model. The study is carried out to demonstrate the significance of clay undrained shear strength and wall depth below the excavation base on the strut forces, lateral earth pressure, wall bending moment and lateral deflection for a braced sheet pile and diaphragm wall in normal consolidated clay. Some relevant background information on this program is provided throughout the report in order to better understand the importance of the above mentioned characteristics. The study shows that for a clay profile of increasing shear strength with depth, the maximum lateral wall deflection is found to fall in the higher range of 0.51%H to 1.11%H for sheet pile wall compared to 0.48%H to 0.84%H for diaphragm wall. Maximum bending moment is found to be about 1 to 1.5 times smaller in sheet pile wall and about 1.4 to 3.2 times smaller in diaphragm wall than for a clay profile with 50% lower shear strength. Maximum strut loads and lateral earth pressure show minimal difference for increasing shear strength. Comparative analysis between two different stiffness of retaining walls show a relatively small difference in lateral deflection whereas it shows a relatively large differences in the lateral earth pressure, maximum wall bending moment and strut loads. The factor of increasing wall penetration depth, D will be discussed in detail throughout the report. Some recommendations to mitigate the lateral wall deflections will be proposed as well. Bachelor of Engineering (Civil) 2009-05-18T07:57:12Z 2009-05-18T07:57:12Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/15884 en Nanyang Technological University 64 p. application/pdf
institution	Nanyang Technological University
building	NTU Library
continent	Asia
country	Singapore Singapore
content_provider	NTU Library
collection	DR-NTU
language	English
topic	DRNTU::Engineering::Civil engineering::Geotechnical
spellingShingle	DRNTU::Engineering::Civil engineering::Geotechnical Liu, Faxiang. Lateral earth pressures on braced retaining wall
description	The increasing demand for underground space, for use as transportation tunnels, railway stations, expressways and construction of high-rise buildings is present in Singapore. In an urbanized city and land scarce country like Singapore, deep excavations are constructed in close proximity to sensitive structures. Hence the prediction of lateral earth pressure, strut loads, lateral wall deflections and bending moments are important considerations to avoid damage to adjacent structures.
author2	Goh Teck Chee, Anthony
author_facet	Goh Teck Chee, Anthony Liu, Faxiang.
format	Final Year Project
author	Liu, Faxiang.
author_sort	Liu, Faxiang.
title	Lateral earth pressures on braced retaining wall
title_short	Lateral earth pressures on braced retaining wall
title_full	Lateral earth pressures on braced retaining wall
title_fullStr	Lateral earth pressures on braced retaining wall
title_full_unstemmed	Lateral earth pressures on braced retaining wall
title_sort	lateral earth pressures on braced retaining wall
publishDate	2009
url	http://hdl.handle.net/10356/15884
_version_	1759856879434989568

Lateral earth pressures on braced retaining wall

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