Alternative Title

Paper No. 3.18

Location

St. Louis, Missouri

Session Start Date

3-8-1998

Session End Date

3-15-1998

Abstract

Model vibration tests under gravity and centrifuge model vibration tests in 50G were performed to investigate the behavior of caisson type sea mill with reclaimed ground below and behind the caisson. In the tests, sliding of caisson occurred only during excitation, which indicates that it is impossible to predict the displacement of caisson and the deformation of back-fill ground without taking account of both inertia force of caisson and dynamic earth pressure. As for the dynamic earth pressure acts on the caisson, it was found that when input acceleration is small, the dynamic earth pressure seems to restrain the movement of caisson and the excess pore water pressure hardly occurs. On the other hand, when input acceleration is large enough to cause liquefaction, the dynamic earth pressure seems to promotes the movement of caisson.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-8-1998

Document Version

Final Version

Rights

© 1998 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Mar 8th, 12:00 AM Mar 15th, 12:00 AM

Study on Mechanism of Caisson Type Sea Wall Movement During Earthquakes

St. Louis, Missouri

Model vibration tests under gravity and centrifuge model vibration tests in 50G were performed to investigate the behavior of caisson type sea mill with reclaimed ground below and behind the caisson. In the tests, sliding of caisson occurred only during excitation, which indicates that it is impossible to predict the displacement of caisson and the deformation of back-fill ground without taking account of both inertia force of caisson and dynamic earth pressure. As for the dynamic earth pressure acts on the caisson, it was found that when input acceleration is small, the dynamic earth pressure seems to restrain the movement of caisson and the excess pore water pressure hardly occurs. On the other hand, when input acceleration is large enough to cause liquefaction, the dynamic earth pressure seems to promotes the movement of caisson.