Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

CH2M HILL is providing engineering, procurement, and construction services for a power plant project in Utah. Before beginning construction on the power plant, geotechnical studies were performed to characterize the subsurface conditions for the anticipated settlement and to determine a ground improvement method to accelerate the construction period. Ground improvement with wick drains and surcharge fill placement was carried out to improve the soft soil conditions at the project site. Settlement monitoring instrumentations were installed before placing structural fill and surcharge fill. An extensive settlement monitoring program was also implemented inside and around the perimeter of the project site to monitor the settlement impact to adjacent facilities due to structure load and surcharge fill placement. The monitoring period was extended even after surcharge fill removal to observe the rebounding behavior of the foundation soil. This paper presents the challenging site conditions, such as soft soil, the design optimization implemented to accelerate the settlement period, and the comparison between predicted and measured settlement at the project site. This paper also presents finite element simulation of ground deformation and rebound behaviors observed during the surcharge loading and unloading stages.

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

Ground Improvement and Settlement Monitoring Program For A Power Plant Project

Chicago, Illinois

CH2M HILL is providing engineering, procurement, and construction services for a power plant project in Utah. Before beginning construction on the power plant, geotechnical studies were performed to characterize the subsurface conditions for the anticipated settlement and to determine a ground improvement method to accelerate the construction period. Ground improvement with wick drains and surcharge fill placement was carried out to improve the soft soil conditions at the project site. Settlement monitoring instrumentations were installed before placing structural fill and surcharge fill. An extensive settlement monitoring program was also implemented inside and around the perimeter of the project site to monitor the settlement impact to adjacent facilities due to structure load and surcharge fill placement. The monitoring period was extended even after surcharge fill removal to observe the rebounding behavior of the foundation soil. This paper presents the challenging site conditions, such as soft soil, the design optimization implemented to accelerate the settlement period, and the comparison between predicted and measured settlement at the project site. This paper also presents finite element simulation of ground deformation and rebound behaviors observed during the surcharge loading and unloading stages.