Location
Chicago, Illinois
Date
02 May 2013, 4:00 pm - 6:00 pm
Abstract
The construction of roadway embankments over soft, compressible soils challenges designers with managing large and differential settlements, maintaining embankment stability, and minimizing construction costs associated with long consolidation periods. These challenges can be successfully tackled with the use of an in-situ soil improvement technique such as the Column Supported Embankment (CSE). The Column Supported Embankment involves constructing a pattern of cement-grouted columns in-situ, using the vibro-displacement or displacement-auger technique. The columns are constructed to bear on dense sand strata underlying cohesive strata that would otherwise consolidate under the embankment loading. A load transfer platform (LTP) is used to effectively distribute the embankment loads onto the series of cement-grouted columns. This paper presents a project case history involving the planning and construction of Column Supported Embankments for the proposed widening of New Jersey’s Garden State Parkway over Bass River. The soil improvement solution called Column Supported Embankment (CSE) is presented. In addition, a comparison of different Column installation techniques such as Controlled Modulus Columns (CMC) and Vibro Concrete Shaft (VCS)/Vibro Concrete column (VCC) is presented. The results of static load tests performed on sacrificial columns and data obtained from instrumentation installed during construction to assess performance of CSE are also presented. The performance of the Column Supported Embankment system is assessed for each system with different installation techniques for the columns and Load Transfer Platforms with either geogrid or geotextile from similar installations in different projects. Finally, conclusions are presented regarding the design and construction aspects of the Column Supported Embankment.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Ramakrishna, Aravinda; Trimpin, Elizabeth; and Mankbadi, Raymond, "Embankment Construction Using Column Supported Embankment" (2013). International Conference on Case Histories in Geotechnical Engineering. 16.
https://scholarsmine.mst.edu/icchge/7icchge/session03/16
Embankment Construction Using Column Supported Embankment
Chicago, Illinois
The construction of roadway embankments over soft, compressible soils challenges designers with managing large and differential settlements, maintaining embankment stability, and minimizing construction costs associated with long consolidation periods. These challenges can be successfully tackled with the use of an in-situ soil improvement technique such as the Column Supported Embankment (CSE). The Column Supported Embankment involves constructing a pattern of cement-grouted columns in-situ, using the vibro-displacement or displacement-auger technique. The columns are constructed to bear on dense sand strata underlying cohesive strata that would otherwise consolidate under the embankment loading. A load transfer platform (LTP) is used to effectively distribute the embankment loads onto the series of cement-grouted columns. This paper presents a project case history involving the planning and construction of Column Supported Embankments for the proposed widening of New Jersey’s Garden State Parkway over Bass River. The soil improvement solution called Column Supported Embankment (CSE) is presented. In addition, a comparison of different Column installation techniques such as Controlled Modulus Columns (CMC) and Vibro Concrete Shaft (VCS)/Vibro Concrete column (VCC) is presented. The results of static load tests performed on sacrificial columns and data obtained from instrumentation installed during construction to assess performance of CSE are also presented. The performance of the Column Supported Embankment system is assessed for each system with different installation techniques for the columns and Load Transfer Platforms with either geogrid or geotextile from similar installations in different projects. Finally, conclusions are presented regarding the design and construction aspects of the Column Supported Embankment.
