Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

The geotechnical report performed for the design stage of a water tank revealed a soil profile consisting in a thick layer of collapsible/loessial soil. The paper firstly presents the complex characterization of the natural ground conditions before and after the soil cushion performance, during the water filling tests of the tank. Specific charts are presented to emphasize the physical and mechanical parameter differences of the natural and improved ground by the soil cushion. The prediction of the supplementary settlement profile on the construction site of the water tank has been performed due to a significant water leakage from the tank during the filling tests, and thus endangering the tank stability and serviceability. Charts presenting the soil-tank interaction during service are included together with settlement diagrams related to potential water leakage from the tank. The paper presents in the second part the stress and strain states that have been comparatively analyzed for various moistening hypotheses with different risk level, according to the settlement increase based on the up going of the moistening front.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Aug 11th, 12:00 AM Aug 16th, 12:00 AM

Case Study of a Water Tank Behaviour on an Improved Collapsible Soil

Arlington, Virginia

The geotechnical report performed for the design stage of a water tank revealed a soil profile consisting in a thick layer of collapsible/loessial soil. The paper firstly presents the complex characterization of the natural ground conditions before and after the soil cushion performance, during the water filling tests of the tank. Specific charts are presented to emphasize the physical and mechanical parameter differences of the natural and improved ground by the soil cushion. The prediction of the supplementary settlement profile on the construction site of the water tank has been performed due to a significant water leakage from the tank during the filling tests, and thus endangering the tank stability and serviceability. Charts presenting the soil-tank interaction during service are included together with settlement diagrams related to potential water leakage from the tank. The paper presents in the second part the stress and strain states that have been comparatively analyzed for various moistening hypotheses with different risk level, according to the settlement increase based on the up going of the moistening front.