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Title:

SLOPE REHABILITATION AT THE BALTIMORE-WASHINGTON PARKWAY WITH RAMMED AGGREGATE PIERS

Accession Number:

00983231

Language:

English

Abstract:

The Baltimore-Washington Parkway is a major traffic artery traveled by daily commuters in suburban Washington, D.C. Much of the parkway roadbed lies on a raised embankment constructed to allow for grade separation between the parkway and surface streets, facilitating access to the parkway. After a series of rainstorms in the fall of 2002, the fill embankment at the recently reconstructed Route 197 interchange failed, with resulting settlement and lateral movement of a retaining wall that supported the southbound lanes of the parkway. The slide encroached on the traffic lanes and jeopardized the integrity and safety of the parkway. After analyzing a variety of possible solutions, the Federal Highway Administration and the National Park Service opted to stabilize the slide by using Geopier rammed aggregate piers, acting in concert with a toe berm stabilized with Tensar high-strength structural geogrid. The rammed aggregate piers improved the stability of the slope by providing significant increases in the composite shear resistance because of their high angle of internal friction (44 deg to 52 deg). A case history is presented of the use of rammed aggregate piers to stabilize a landslide. The analytical methods used in the design solution are presented along with a description of the construction sequence. This study is significant because it describes how a simple and cost-effective solution may be implemented to stabilize landslides.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1874, Geology and Properties of Earth Materials 2004.

TRIS Files:

HRIS

Pagination:

p. 136-146

Authors:

O'Malley, E S
Saunders, S A
Ecker, J J

Monograph Accession #:

00983216

Publication Date:

2004

Serial:

Transportation Research Record

Issue Number: 1874more icon
Publisher: Transportation Research Board
ISSN: 0361-1981

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 USA

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 USA
Order URL: http://trb.org/news/blurb_detail.asp?id=4618

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Order URL: http://worldcat.org/isbn/0309094690

ISBN:

0309094690

Features:

Figures (10) ; Photos (3) ; References (8) ; Tables (3)

Subject Areas:

Geotechnology; Highways; Marine Transportation; I42: Soil Mechanics

Last Modified:

Dec 7 2004 12:00AM

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