Analysis of aggregate pier systems for stabilization of subgrade settlement.

Bilgin, Ömer; Arens, Kevin; Salveter, Mark; University of Dayton. Dept. of Civil and Environmental Engineering and Engineering Mechanics

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Analysis of aggregate pier systems for stabilization of subgrade settlement.

2014-12-01
By Bilgin, Ömer ; Arens, Kevin ; Salveter, Mark

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English

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Details:

Creators:

Bilgin, Ömer ; Arens, Kevin ; Salveter, Mark

Bilgin, Ömer ; Arens, Kevin ; Salveter, Mark Less -
Corporate Creators:

University of Dayton. Dept. of Civil and Environmental Engineering and Engineering Mechanics
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Alternatives Analysis Benefit Cost Analysis Feasibility Analysis Pavement Distress Settlement (Structures) Soft Soils Soil Stabilization Subgrade (Pavements) Vertical Supports
Publication/ Report Number:

FHWA/OH-2014/14
Resource Type:

Tech Report
Geographical Coverage:

Ohio
Corporate Publisher:

Ohio. Dept. of Transportation
Abstract:

Every year, ODOT undertakes numerous pavement patching/resurfacing projects to repair pavement

distress and structural failure due to soft and/or organic soils constituting the subgrade. Other than the

temporary solution of patching/resurfacing, removal of weak soils and replacement with new suitable

engineered fill can be used for permanent remediation. However, when problem soils are relatively deep

this method can be too costly. There are various vertical column support methods used for civil

engineering structures when soils are not strong enough to support the structure. Although some of

these methods are utilized by several state DOTs to remediate settlement problems of existing

roadways, they were not used in Ohio for this purpose. This study investigated the applicability of

various vertical column support systems to improve subgrade and reduce settlements for existing

roadways in Ohio. A decision matrix has been developed to identify the feasible methods. Two sites

with ongoing subgrade settlements have been investigated through detailed subsurface investigations

for possible implementation. Several technically feasible vertical column support methods have been

identified for these sites. Lifetime cost-benefit analysis performed show that although there are some

upfront costs associated with these remediation methods, the vertical column support ground

improvement methods are significantly more cost effective compared to the current practice of

patching/resurfacing temporary alternative during the project’s lifetime, and can result in significant

cost savings to ODOT and roadway users.
Format:

PDF
Funding:

134726
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:9e074f41061310fb3fd3fe730eb6736a49f890b7a090c63fc6ef9014e24f896c
Download URL:

https://rosap.ntl.bts.gov/view/dot/28431/dot_28431_DS1.pdf
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Analysis of aggregate pier systems for stabilization of subgrade settlement.

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