mirage

Analytical study of methods to reduce excavation-induced movements

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Analytical study of methods to reduce excavation-induced movements

Show simple item record

dc.contributor.author Aryani, Febrina
dc.date.accessioned 2012-01-16T03:36:15Z
dc.date.available 2012-01-16T03:36:15Z
dc.date.copyright 2011
dc.date.issued 2012-01-16
dc.identifier.citation Aryani, F. (2011). Analytical Study of Methods to Reduce Excavation-Induced Movements. Final year project report, Nanyang Technological University.
dc.identifier.uri http://hdl.handle.net/10220/7459
dc.description.abstract In this project, both two-dimensional and three-dimensional analyses were carried out using the finite element method to evaluate the performance of braced excavation systems in soft clay deposit. Wall systems of different stiffness were considered. Plane Strain Ratio (PSR) is used to compare the two-dimensional wall movement with the three-dimensional wall movement. The results show that plane strain analyses give slightly more conservative estimates of wall movement as compared to three-dimensional analyses. As the excavation length is more than four times the width of the excavation, the PSR is close to unity. In situations where the wall movements are excessive, improvement methods are commonly used to further reduce the wall movements. In this report, two improvement methods are analyzed, namely jet grouting and cross wall system. Several arrangements of the improvement methods are modeled using PLAXIS 3D Foundation software. Eighteen three-dimensional models with varied wall stiffness are considered to find out the optimal improvement method to reduce the wall movement and the maximum strut forces. Comparisons of the wall movements and strut forces from jet grouting and cross walls methods indicate that both improvement methods are effective in reducing both the wall movement and the strut forces. Jet grouting is observed to be more effective in the cases of low stiffness wall systems, while cross wall method is more effective for the higher stiffness wall systems. Walltype jet grouting gives better performance than block-type jet grouting. Block-type jet grouting requires a very large improvement area to be effective and thus is not as economical. Cross walls should be installed at the right positions to restrain the wall movement effectively, i.e. around the area where the maximum wall movement is anticipated.
dc.format.extent 97 p.
dc.language.iso en
dc.subject DRNTU::Engineering::Civil engineering::Geotechnical
dc.title Analytical study of methods to reduce excavation-induced movements
dc.type Final Year Project (FYP)
dc.contributor.school School of Civil and Environmental Engineering
dc.contributor.supervisor Anthony Goh Teck Chee
dc.description.degree Degree of Bachelor of Engineering

Files in this item

Files Size Format View Description
cge09.pdf 4.614Mb PDF View/Open Main Article

This item appears in the following Collection(s)

Show simple item record

Statistics

Total views

All Items Views
Analytical study of methods to reduce excavation-induced movements 1925

Total downloads

All Bitstreams Views
cge09.pdf 4342

Top country downloads

Country Code Views
United States of America 927
Iran 720
Singapore 493
China 180
Australia 167

Top city downloads

city Views
Mountain View 458
Singapore 418
Simi Valley 99
Sydney 92
Hanoi 59

Downloads / month

  2014-10 2014-11 2014-12 total
cge09.pdf 0 0 25 25