Session Start Date

6-1-1988

Abstract

The Port of Portland, Oregon recently completed the rehabilitation of the downstream portion of Terminal 2. The project included the placement of more than 1 million cy of dredged hydraulic sand fill and the construction of a 1,400-ft-long pile-supported wharf. Up to 60 ft of sand fill was placed over soft, submerged sediments. The silt along the toe of the slope was removed prior to placing the fill. No shear failures or mudwaves were detected during filling. The fill induced settlements of up to 63 in., which agreed well with the predicted maximum settlement of about 60 in. Underwater sand fill slopes were placed at about 2.5H: 1V and subsequently trimmed to 2.25H: 1V. The slope was subsequently densified and steepened to 1.75H: 1V with fragmental quarry rock. After slope construction, 840 vertical, 24-in. octagonal prestressed concrete piles were driven for the wharf.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Second Conference

Publisher

University of Missouri--Rolla

Publication Date

6-1-1988

Document Version

Final Version

Rights

© 1988 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Jun 1st, 12:00 AM

The Rehabilitation of Terminal 2 – A Case History

The Port of Portland, Oregon recently completed the rehabilitation of the downstream portion of Terminal 2. The project included the placement of more than 1 million cy of dredged hydraulic sand fill and the construction of a 1,400-ft-long pile-supported wharf. Up to 60 ft of sand fill was placed over soft, submerged sediments. The silt along the toe of the slope was removed prior to placing the fill. No shear failures or mudwaves were detected during filling. The fill induced settlements of up to 63 in., which agreed well with the predicted maximum settlement of about 60 in. Underwater sand fill slopes were placed at about 2.5H: 1V and subsequently trimmed to 2.25H: 1V. The slope was subsequently densified and steepened to 1.75H: 1V with fragmental quarry rock. After slope construction, 840 vertical, 24-in. octagonal prestressed concrete piles were driven for the wharf.