Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

The proposed power project site on the South East coast of India required the construction of breakwaters to prevent detrimental effects owing littoral drift along the coast and also to protect the intake channel lining against sea attack. This paper describes the geotechnical design and analysis for breakwater facility proposed for the site. The preliminary design of breakwater was carried out using raw geotechnical data made available in form of the few boreholes investigation and SPT N-values. The general soil profiles suggest that the stratum consist of 37 metres of soft clay below sea bed resting on medium dense to dense sand formations. Ground improvement was inevitable for the site and attempts were made to review the techno commercial feasibility of ground improvements in the staged construction framework for vibroreplacement and band drain installation. Slope stability analysis and time dependent settlement analysis were implemented for suggested staged construction sequence to ensure the desired stability at each construction stage. The partial treatment scenario was considered owing to practical limitation for carrying out the ground improvement along the full clay depth. The study describes the possible strength gain approach as geotechnical solution for such difficult sites to achieve techno commercial tradeoff. The stability analyses are addressed in the present study for each construction stage along with settlement analysis. The good quality geotechnical investigation carried out for the site has revealed that sound geotechnical judgmental engineering from the insufficient preliminary data can lead to converge better in this competitive environment.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Seventh Conference

Publisher

Missouri University of Science and Technology

Publication Date

4-29-2013

Document Version

Final Version

Rights

© 2013 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 29th, 12:00 AM May 4th, 12:00 AM

Analysis and Design of Breakwater for Sea Water Intake Facility On South East Coast of India

Chicago, Illinois

The proposed power project site on the South East coast of India required the construction of breakwaters to prevent detrimental effects owing littoral drift along the coast and also to protect the intake channel lining against sea attack. This paper describes the geotechnical design and analysis for breakwater facility proposed for the site. The preliminary design of breakwater was carried out using raw geotechnical data made available in form of the few boreholes investigation and SPT N-values. The general soil profiles suggest that the stratum consist of 37 metres of soft clay below sea bed resting on medium dense to dense sand formations. Ground improvement was inevitable for the site and attempts were made to review the techno commercial feasibility of ground improvements in the staged construction framework for vibroreplacement and band drain installation. Slope stability analysis and time dependent settlement analysis were implemented for suggested staged construction sequence to ensure the desired stability at each construction stage. The partial treatment scenario was considered owing to practical limitation for carrying out the ground improvement along the full clay depth. The study describes the possible strength gain approach as geotechnical solution for such difficult sites to achieve techno commercial tradeoff. The stability analyses are addressed in the present study for each construction stage along with settlement analysis. The good quality geotechnical investigation carried out for the site has revealed that sound geotechnical judgmental engineering from the insufficient preliminary data can lead to converge better in this competitive environment.