Location

St. Louis, Missouri

Session Start Date

6-1-1993

Abstract

A Major port in India had six cargo berths and a seventh one was to be added to cater for the heavy cargo traffic. The top layer of the soil along the berth was 20 m thick soft and sensitive marine silty clay with an average shear strength of 2 tons/Sqm. The design provided for a berth 342 m long. It had a quay and transit area supported on 750 mm diameter bored piles which was followed by open stacking ground 60 m wide, to be preconsolidated by sand drains. Finally it had a paved unconsolidated area 120 m wide. The design was also provided with a defense dyke and a filled up area to allow the machinery to work in the dry. Soon after start of piling a sudden settlement of the soil was observed in a length of about 40 m. The defense dyke also bodily shifted towards the sea. After a period of about seven months there was a serious foundation failure. Investigations were carried out into the causes of failure. The paper describes the details of investigations and final remedial measures taken.

Author

Dinesh Mohan

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Third Conference

Publisher

University of Missouri--Rolla

Publication Date

6-1-1993

Document Version

Final Version

Rights

© 1993 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

Failure of a Shipping Berth

St. Louis, Missouri

A Major port in India had six cargo berths and a seventh one was to be added to cater for the heavy cargo traffic. The top layer of the soil along the berth was 20 m thick soft and sensitive marine silty clay with an average shear strength of 2 tons/Sqm. The design provided for a berth 342 m long. It had a quay and transit area supported on 750 mm diameter bored piles which was followed by open stacking ground 60 m wide, to be preconsolidated by sand drains. Finally it had a paved unconsolidated area 120 m wide. The design was also provided with a defense dyke and a filled up area to allow the machinery to work in the dry. Soon after start of piling a sudden settlement of the soil was observed in a length of about 40 m. The defense dyke also bodily shifted towards the sea. After a period of about seven months there was a serious foundation failure. Investigations were carried out into the causes of failure. The paper describes the details of investigations and final remedial measures taken.