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ID 29561
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title alternative
Analysis of the ultimate Earth Pressure on Underground Conduits
creator
Tominaga, Koji
NDC
Construction. Civil engineering
abstract
The ground movement caused by the consolidation of soil or surface loading changes the state of stress in the ground adjacent conduits. Under these circumstances the conduits may be subjected to very high ground forces which can lead to conduit failure.

The purpose of this paper is to present a method of estimating the ultimate earth pressure on the conduits, which is based on the limit analysis and equilibrium equations. The analysis presented is similar in principle to that employed by Matsuo (1964), but it is also extended to conduit groups which are placed in parallel. The failure model of soil mass used in the present analysis is produced by analysing photographs to show movements of sand particles around the conduits during model tests. Furthermore, on the assumption that the Mohr-Coulomb's failure criterion is valid on shear sliding line, the failure model is shaped by a logarithmic spiral.

In this paper, comparisons are also made between observations on the ultimate earth pressure acting on the model conduits set in the dry sand and a mass of aluminum rods and those predicted by the proposed theory, and it is found that the proposed theory can predict the test results fairly well.
journal title
廣島大學工學部研究報告
volume
Volume 38
issue
Issue 1
start page
75
end page
85
date of issued
1989-12
publisher
廣島大學工學部
issn
0018-2060
ncid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Engineering
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