Alternative Title

Paper No. 1.17

Location

St. Louis, Missouri

Session Start Date

3-8-1998

Session End Date

3-15-1998

Abstract

In a special lecture held by the senior author at the Int. Conf. on Case Histories in Geotechnical Engineering in St. Louis (Hansbo, 1984) a follow-up was presented of the observations on two nearby buildings founded on deep deposits of soft clay according to different foundation principles. In one case the total load of the building is carried by friction piles with a factor of safety against failure equal to 3 while, in the other case, the load is partly carried by contact pressure at the raft/soil interface and partly by friction piles with a design load equal to creep failure. The presentation included about two years of observations of settlements, pile loads and contact stresses. In this paper a brief recapitulation of the foundation circumstances and the design of the two buildings will be made and the results of another 14 years of observation will be analysed. The observations include, besides the settlement distribution over the building areas, settlement at various depths, the pile loads and contact stress distribution and the excess pore pressure dissipation.

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

A Follow-up of Two Different Foundation Principles

St. Louis, Missouri

In a special lecture held by the senior author at the Int. Conf. on Case Histories in Geotechnical Engineering in St. Louis (Hansbo, 1984) a follow-up was presented of the observations on two nearby buildings founded on deep deposits of soft clay according to different foundation principles. In one case the total load of the building is carried by friction piles with a factor of safety against failure equal to 3 while, in the other case, the load is partly carried by contact pressure at the raft/soil interface and partly by friction piles with a design load equal to creep failure. The presentation included about two years of observations of settlements, pile loads and contact stresses. In this paper a brief recapitulation of the foundation circumstances and the design of the two buildings will be made and the results of another 14 years of observation will be analysed. The observations include, besides the settlement distribution over the building areas, settlement at various depths, the pile loads and contact stress distribution and the excess pore pressure dissipation.